cruise control not working d40

5 Reasons Why Your Cruise Control Stopped Working

• Updated: March 15, 2023

It would be difficult to find a vehicle on the road today without cruise control. This invaluable feature makes driving long distances easier but can also cause trouble when it malfunctions. Understanding the reasons your cruise control stopped working ensures that you can get the problem fixed quickly for a more enjoyable ride. 

While this fault can cause issues with the cruise control system itself, there could also be an effect on the acceleration of your vehicle. That’s why you want to have it looked at as soon as you notice a problem. Let’s take a quick look at the reasons your cruise control may have stopped working.

Reasons Why Your Cruise Control Stopped Working

The most common reason a cruise control stops working is due to a blown fuse or a defective brake pedal switch . It can also be caused by issues with the throttle control system or the ABS. In older cruise control systems, it can be caused by a broken vacuum line.

Here is a more detailed list of the possible reasons your cruise control is not working:

1. Blown Fuse

All electrical systems in the vehicle are controlled by fuses. Your cruise control system is attached to a fuse that can blow if there is a short circuit or fault. Without a good fuse, the cruise control system can’t work at all.

Thankfully, it’s not difficult to find and replace a blown fuse. Look in the owner’s manual to find the fuse that corresponds with the cruise control technology. 

2. Defective Brake Pedal Switch

The brake pedal switch is responsible for turning the brake lights on and off based on the pedal position. Cruise control systems are designed to disengage whenever your brake pedal gets pressed. 

Because the cruise control is wired into the brake pedal switch, any fault can cause it to stop working. When the brake pedal switch malfunctions, the car believes the brakes are engaged, causing the system to turn off automatically. Not only that, but your car’s brake light might also be stuck on, leaving confused drivers in your wake. 

3. Malfunctioning Speed Sensor

Speed sensors are located on every wheel or differential. The purpose of these sensors is to monitor the speed of the wheels to determine if traction control is needed. 

The speed sensors are also part of the cruise control system. When a sensor fails, the cruise control can stop working and the speedometer might act strange as well. 

If there is an issue with a speed sensor, it will often show with an ABS warning light or a check engine light on the dashboard.

RELATED: 3 Symptoms of a Bad ABS Wheel Speed Sensor

4. Electrical Issues

The cruise control system is electronic, with many components working together to make the system operate. If the cruise control fails to work, you want to check the wiring harness and associated connectors for a fault.

You also need to ensure that the voltage source is supplying enough power to the system. Even the smallest fault can cause defects with the cruise control. In many cases, there can be an issue with the cruise control lever or buttons causing the cruise control to not engage.

If your cruise control buttons are located on the steering wheel it could also be caused by a bad clock spring, which is located behind the steering wheel.

Check the system with an OBD2 scanner to look for any trouble codes related to the cruise control.

RELATED: 5 Symptoms of a Broken Clock Spring, Location & Replacement Cost

5. Damaged Vacuum Actuator, Hoses or Cable (Older cruise control)

If you drive an older vehicle with cruise control, you might have an issue with the vacuum actuator or the cable that connects to the throttle. If there has been damage done to the vacuum hoses or the actuator, the cruise control will stop working altogether.

Additionally, the cable linking the actuator to the throttle must be in good shape. If it has been broken, the cruise control will fail. 

What is Cruise Control?

Cruise control is a feature that is used when you are traveling at a consistent speed. Cruise control was first introduced for automobiles in the 1950s. However, it took many years before it became a staple in the modern vehicle.

This electrical system allows you to set a predetermined speed and take your foot off of the gas pedal. If you are on a long drive, there is less fatigue because you don’t have to try to maintain your speed. Cruise control can also benefit fuel economy because the vehicle uses less fuel when traveling steadily. 

In newer cars, you might be able to find adaptive cruise control , which is a smart technology. Adaptive cruise control allows you to travel at a predetermined speed, but it also helps to maintain a safe distance from the vehicles in front of you with the help of sensors. With conventional cruise control, you need to take over when the car in front of you slows down, but that’s not the case with adaptive cruise control. 

There are also vehicles nowadays with not only cruise control, but fully self-driving vehicles . We will most likely see much more of this in the future.

Cruise Control Repair Cost

The cost to repair your cruise control system depends on what caused it to fail. If you need to replace a cruise control or brake switch, you might spend between $125 and $350, including parts and labor. However, the cost to change a fuse is only a few dollars and you can perform the replacement yourself in just a matter of seconds. 

On the other hand, when something major fails, such as the actuator, you could be looking at a much higher repair bill. In some vehicles, the cost to replace a cruise control actuator can cost more than $700. These costs rise if you drive a luxury vehicle or one that is difficult to get parts for. 

It might not seem immediately important for you to fix the broken cruise control, but this defective system can affect other performance aspects. You could start to notice issues with acceleration or have trouble with the speedometer. To play it safe, it’s always best to have the cruise control repaired as soon as you notice a problem.

Is there a fuse for the cruise control?

Yes. If the cruise control is installed from the factory, you should check your car’s owner’s manual for the fuse location. If it’s an aftermarket cruise control, you’ll need to follow the wires to find the fuse.

Does the brake switch affect the cruise control system?

Yes. The brake switch affects the cruise control system. The brake switch sends a signal to the cruise control system to let it know when the brakes are being applied for the engine to know when it should stop accelerating.

Will the cruise control work if the check engine light is on?

The cruise control function will be disabled when the check engine light is on in most car models, even if the cause of the check engine light is not the cruise control itself. This is mainly due to safety reasons.

Can a vacuum leak affect cruise control?

Older vehicles use vacuum to control the throttle for the cruise control, and in this case a vacuum leak can heavily affect the cruise control. However, modern cruise controls are fully electric and in most cases will not be affected by a vacuum leak if the check engine light is not illuminated.

Although many people may think that the cruise control system is unimportant and not worth spending money to repair, the problem can be caused by a faulty part that will affect the engine’s performance or durability. Therefore, it is best not to ignore the problem if your cruise control is not working without first diagnosing the car properly.

If your cruise control still isn’t working after trying all the tips in this article, it’s probably time to take it in for a professional opinion from a mechanic. It may be a more serious problem that requires replacement parts or repairs. In the meantime, drive safe and enjoy the open road!

Learn more:

• Brake Lights Not Working But Tail Lights Are? (How to Fix)
• Tail Lights Not Working But Brake Lights Are? (How to Fix)
• Brake Lights Stay On? (5 Causes & How to Fix it)

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Cruise Control will not "SET"

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I've searched and found many threads here on CF about this same issue, but not many resolutions so I am asking again with a little more info. About a month ago my cruise control started cancelling itself very rarely. Over time it got more and more frequent. Now it won't let me SET the speed at all. The CRUISE light will come on like normal when I activate it. The truck is an 2007 V6 Automatic CC Long Bed 4X4. So far (based on other topics about this on CF) I have done the following: - Checked that the switches on the brake pedal are being engaged when the brake pedal returns. They both seem to be fine, and the brake pedal is returning to the full position every time. Even when driving, if I pull up on the brake pedal it does not let me set the cruise control. - I check all of the fuses inside the cab and they are all fine. - All of my brake lights are working, as well as my reverse lights. I haven't checked the license plate lights yet, but I doubt that could be it as they are brand new LED bulbs. I'm not sure where to go from here. I drive a lot of highway everyday and cruise control is a valuable asset to both drive comfort, and fuel economy. HELP! It's worth mentioning that I had to install a new shift cable linkage collet in the cab because the shifting cable broke off of the gear selector. HOWEVER , the Cruise Control was cancelling itself before the replacement. I don't know if there could be some other sensor down there that's not letting me set the cruise control.  

I would check the pedal switch with an ohm meter just to be sure. Isn't there also a switch on the shifter arm?  

That's what I don't know  

CANCEL OPERATION When any of following conditions exist, cruise operation will be canceled. • CANCEL switch is pressed • More than 2 switches on ASCD steering switch are pressed at the same time (Set speed will be cleared) • Brake pedal is depressed • Clutch pedal is depressed or gear position is changed to the neutral position (M/T models) • Selector lever position is changed to N, P or R (A/T models) • Vehicle speed decreased to 13 km/h (8 MPH) lower than the set speed • VDC system is operated When the ECM detects any of the following conditions, the ECM will cancel the cruise operation and inform the driver by blinking indicator lamp. • Engine coolant temperature is slightly higher than the normal operating temperature, CRUISE lamp may blink slowly. When the engine coolant temperature decreases to the normal operating temperature, CRUISE lamp will stop blinking and the cruise operation will be able to work by depressing SET/COAST switch or RESUME/ ACCELERATE switch. • Malfunction for some self-diagnoses regarding ASCD control: SET lamp will blink quickly . Click to expand...

I've seen that. None of which apply to my current situation. This is killing me!  

Does your 2007 use the famous little plastic/rubber "stop pad" that actuate the brake switches ??? Because those can get brittle and break and fall off, then the "pin" on the switch never gets pressed in when the brake pedal is "up". Yours should have two separate switches for your brake pedal, one for brake lights and one for the cruise control (they look similar but operate in opposite way). So look at those first ; I found easiest fix was to JB Weld a dime over the hole to press in the switch "pin" (you could use a penny to save 9 cents though). Within the last year the plastic/rubber clutch "stop pad" on both my '98 Frontier brake pedal broke off (lights always stayed on) and both brake "stop pads" on my daughter's 1998 Pathfinder both broke (so she also had no cruise control, as well as the brake lights staying on from the second switch not actuating).  

I will double check those. They seemed to be getting depressed when the pedal was fully returned, but then again idk how MUCH they are supposed to be depressed. It's definitely worth a shot. I'll take something to the pedal and see if that solves it, then I'll go the permanent route. Thanks!  

I had a similar occurrence with a '04 Sorento years ago. It turns out I had stamped on the brake pedal so hard that I bent the pins on the switch that they were permanently "shorted" and didn't allow the cruise control to engage.  

Interesting development. This morning I decided to try and set the cruise control while pressing the brake pedal slightly. IT WORKED. Even after I dropped off my daughter, and had to turn the truck on again it let me set the cruise. However this only lasted about 5 minutes before it wouldn't let me set it again, even when trying to set it while pressing the brake pedal again. Not sure what this could mean though :|  

Shot in the dark: might any of your LED bulbs be a/the monkey wrench?  

The only LED bulbs I have are the map lights in the cab, license plate lights, and reverse lights. All of which work fine when they are supposed to.  

Stuck in my craw that even a small rear lighting malfunction will trip the cruise control. Every so often I'll find myself near a reflective glass storefront and will then go through all my lights checking for function. Will then back in and do the same. ~ A wise practice for those who imbibe/drive. .02  

I back into my parking spot at work every morning at work in front of a window. They all work fine, the only question I had was do the cargo lights illuminate when in reverse? They turn on when I flip the switch, but not when I put the truck into reverse (although I don't think they are supposed to)  

Could be an intermittent/bad switch, since you say it worked for a few seconds. No, you cannot swap the switches (would guess their harness/socket is different) as the two switches work in opposite way.  

Ah, I guess it's time to find and order a new switch!  

UPDATE: It seems to be working more now that it is colder out, but once the truck warms up and I have been driving for a while it won't set again. I wonder if has something to do with my transmission temperature...I did the SMOD bypass a few months ago in the Texas summer, and it worked fine though.  

At this point, your troubleshooting methodology is just waiting for blind luck to reveal itself the cause. Until you get somebody with skills looking at your truck directly, this hunt and peck and internet guessing game is just going to go in circles for you.  

You might have a clock spring starting to go bad. This could explain the intermittent functionality.  

Likely culprit is the Park/Neutral position switch (PNP). I believe it is sometimes called the Neutral Safety Switch.  

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Cruise Control Not Working? Troubleshoot It Now!

Are you experiencing issues with your cruise control? Don’t worry, we’ve got you covered! Cruise control is a convenient feature that allows you to maintain a constant speed without using the accelerator pedal. However, when it stops working, it can be frustrating and potentially dangerous. In this article, we’ll help you troubleshoot common cruise control problems and provide you with diagnostic tips to get you back on the road in no time.

Key Takeaways

• Understanding how cruise control works is crucial for troubleshooting.
• Common reasons for cruise control failure include faulty brake light switches, worn-out cruise control switches, and electrical problems .
• Ford vehicles may have specific cruise control issues, such as burned-out brake lights or faulty control switches .
• Troubleshooting tips include inspecting the brake light switch, checking for vacuum leaks, and diagnosing electrical problems .
• Fixing cruise control problems may involve replacing faulty components or seeking professional assistance.

How Does Cruise Control Work?

Cruise control systems work by utilizing a combination of components to maintain a set speed in your vehicle. Understanding how cruise control systems function is crucial for diagnosing and troubleshooting any potential issues.

When you activate the cruise control system by pressing the ‘on’ button, it enters into a standby mode, awaiting your instructions to set the desired cruising speed. Once you have reached the desired speed, you can set it by using the control buttons typically located on the steering wheel or stalk.

Now, let’s delve into the inner workings of a cruise control system. Once the cruising speed is set, the cruise control module takes control of the throttle body , which regulates the amount of air entering the engine. By adjusting the throttle body opening, the system maintains the desired speed, compensating for changes in incline and external factors.

During operation, various sensors constantly monitor the vehicle’s speed, throttle position, and other relevant parameters. These sensors provide continuous inputs to the cruise control module, which in turn adjusts the throttle body opening accordingly to maintain the desired speed.

If you need to cancel the cruise control function, you can do so by pressing the ‘cancel’ or ‘off’ button or applying the brakes. These actions deactivate the cruise control module, allowing you to regain control of the throttle and return to normal driving mode.

It’s important to note that cruise control systems are not fully autonomous. They assist the driver in maintaining a constant speed but still require attentive driving and awareness of the road conditions. Cruise control should never be used as a substitute for actively monitoring the road ahead and reacting to unexpected situations.

Now that we have a basic understanding of how cruise control works, let’s explore some common reasons for cruise control failure and learn how to troubleshoot these issues.

Common Reasons for Cruise Control Failure

If your cruise control is not functioning properly, there could be various reasons behind its failure. Understanding these common issues will help you troubleshoot and resolve the problem.

1. Faulty Brake Light Switch

A faulty brake light switch is a common culprit for cruise control failure. When the brake light switch is malfunctioning, it can prevent the cruise control system from engaging or disengaging correctly.

2. Worn-Out Cruise Control Switch Function

Over time, the cruise control switch function can wear out, resulting in the inability to set or maintain the desired cruising speed.

3. Brake Light Issues

Brake light issues , such as a burned-out bulb or wiring problems, can interfere with the proper functioning of the cruise control system.

4. Spiral Cable Fault

A faulty spiral cable, which is responsible for transmitting electrical signals between the steering wheel and the rest of the vehicle, can cause cruise control failure.

5. Check Engine Light

If the check engine light is illuminated, it may indicate underlying issues with the vehicle’s engine or emissions control system, which can affect the cruise control functionality.

6. Blown Fuses and Damaged Relays

Blown fuses or damaged relays in the cruise control circuit can disrupt the flow of electrical power, leading to cruise control failure.

7. Vacuum Leak

A vacuum leak in the engine can cause a loss of vacuum pressure, affecting the cruise control system’s ability to maintain the set speed.

8. Vehicle Speed Sensor Fault

A malfunctioning vehicle speed sensor can prevent the accurate transmission of speed information to the cruise control module, resulting in functionality issues.

9. ABS Sensor Faults

Issues with the anti-lock braking system (ABS) sensors can affect the cruise control system, as these sensors provide essential data for maintaining speed and stability.

10. Electrical Problems

Electrical problems , such as wiring issues, faulty connectors, or a malfunctioning cruise control module, can disrupt the proper functioning of the cruise control system.

Identifying and addressing these common reasons for cruise control failure can help you troubleshoot and resolve any issues you may be experiencing. By addressing these problems, you can ensure the smooth operation of your cruise control system and enjoy a comfortable driving experience.

Ford Cruise Control Not Working?

If you own a Ford vehicle and are experiencing issues with your cruise control, you’re not alone. Ford cruise control can sometimes fail to work altogether or operate intermittently. To help you troubleshoot and resolve these problems, we’ve identified some common issues that may be affecting your Ford’s cruise control system.

Common Issues with Ford Cruise Control

There are several common issues that can cause Ford cruise control to malfunction. These include:

• Burned out brake lights
• Blown fuses
• Broken brake light switch
• Faulty shifter actuator
• Faulty control switches

Addressing these issues is essential to ensure the proper functioning of your Ford’s cruise control system. Let’s take a closer look at each problem and how it can affect your cruise control’s operation.

To diagnose and resolve these issues, refer to your Ford vehicle’s manual or consult a trusted mechanic for proper guidance and repair.

By addressing these common issues, you can potentially restore the functionality of your Ford’s cruise control system and enjoy a comfortable and convenient driving experience.

Troubleshooting Tips for Cruise Control Issues

If your cruise control is not working properly, follow these troubleshooting tips to diagnose and resolve the problem. By going through each step, you can identify the underlying cause and take appropriate action.

1. Check the Brake Light Switch

Start by inspecting the brake light switch, as a malfunctioning switch can affect cruise control functionality. Ensure that the switch is properly connected and functioning correctly. If necessary, replace the switch.

2. Inspect the Cruise Control Switch Function

Verify that the cruise control switch is functioning as intended. Press all buttons and check for any signs of wear or damage. If the switch is faulty, consider replacing it with a new one.

3. Ensure Proper Brake Light Function

Make sure the brake lights are working correctly. Faulty brake lights can interfere with the cruise control system. Test the lights by pressing the brake pedal while observing if they illuminate.

4. Check the Spiral Cable

Inspect the spiral cable, also known as the clock spring , for any signs of damage or wear. The spiral cable connects the steering wheel-mounted controls, including the cruise control buttons, to the vehicle’s electrical system. Replace the spiral cable if necessary.

5. Address Check Engine Light Issues

If the check engine light is illuminated, it may indicate an underlying problem that affects the cruise control system. Use an OBD-II scanner to retrieve any stored error codes and diagnose the issue accordingly.

6. Inspect Fuses and Relays

Check the fuses and relays related to the cruise control system. A blown fuse or damaged relay can prevent the cruise control from engaging. Replace any faulty components as needed.

7. Look for Vacuum Leaks

Inspect the vacuum hoses connected to the cruise control system for any leaks or damage. Ensure proper connections and replace any damaged hoses. Vacuum leaks can interfere with the system’s functionality.

8. Inspect the Vehicle Speed Sensor

Check the vehicle speed sensor for any faults. A malfunctioning speed sensor can prevent the cruise control from maintaining the desired speed. Consider replacing the sensor if necessary.

9. Address ABS Sensor Faults

ABS sensor faults can also impact the cruise control system. Inspect the ABS sensors and wiring for any damage or connectivity issues. Repair or replace any faulty components.

10. Diagnose Electrical Problems

If none of the above steps resolve the issue, it’s essential to diagnose any underlying electrical problems. This may require professional assistance to accurately identify and repair the problem.

By following these troubleshooting tips, you can effectively diagnose and resolve cruise control issues. Remember to prioritize safety and consult a professional if needed.

Tips for Fixing Cruise Control Problems

Once you have identified the cause of the cruise control problem, you can take steps to fix it. Depending on the issue, this may involve:

• Replacing the brake light switch: A malfunctioning brake light switch can prevent the cruise control system from engaging. Replace the switch if necessary.
• Repairing the cruise control switch function: If the cruise control switch is worn out or not functioning properly, it may need to be repaired or replaced.
• Addressing brake light issues: Ensure that the brake lights are working correctly, as cruise control systems often rely on the brake light circuit to engage and disengage.
• Replacing the spiral cable: A faulty spiral cable can cause cruise control issues. If diagnosed as the problem, it should be replaced.
• Resolving check engine light problems: If the check engine light is illuminated, it may indicate an issue that needs to be addressed to restore proper cruise control operation.
• Replacing blown fuses or damaged relays: Check the fuses and relays related to the cruise control system and replace any that are blown or damaged.
• Fixing vacuum leaks: Vacuum leaks can affect the performance of the cruise control system. Identify and repair any leaks found.
• Replacing the vehicle speed sensor: A faulty vehicle speed sensor can prevent the cruise control system from maintaining the desired speed. Replace the sensor if needed.
• Addressing ABS sensor faults: ABS sensor faults can interfere with the cruise control system’s functionality. Troubleshoot and replace any faulty ABS sensors.
• Resolving electrical problems: Cruise control issues can be caused by various electrical problems. Diagnose and fix any electrical faults affecting the system.

It’s crucial to follow proper repair procedures when fixing cruise control problems. If you’re unsure or uncomfortable with these repairs, it’s always advisable to consult a professional automotive technician for assistance.

Paying Attention on the Road

While utilizing cruise control can enhance comfort and reduce stress on long journeys, it’s important to recognize that it is not a fully autonomous driving system. Therefore, it is imperative to maintain vigilance and remain attentive to other road users in order to prevent potential collisions. Cruise control should be regarded as an aid to driving, rather than a complete substitute for active engagement with the road.

Importance of Vigilance

When utilizing cruise control, drivers must remember that it is their responsibility to actively monitor the road conditions and adjust their driving accordingly. While the cruise control system assists in maintaining a constant speed, it does not account for prevailing traffic conditions, road hazards, or unexpected situations that may require immediate driver intervention. By remaining attentive, drivers can effectively respond to unpredictable events, ensuring the safety of themselves and others on the road.

Understanding Cruise Control as an Aid

Cruise control should be viewed as a valuable tool that can enhance driving comfort and alleviate fatigue during long trips. By allowing drivers to maintain a steady speed without continuous foot pedal operation, it can provide relief on monotonous stretches of road. However, it is crucial to remember that cruise control does not relieve the driver of their obligation to actively control the vehicle. It is always necessary to stay focused, maintain situational awareness, and be prepared to take immediate action if required.

Avoiding Complacency

One potential danger of using cruise control is the potential for complacency. Drivers may become overly reliant on the system and mentally disengage from the driving task. To combat this, it is important to stay mentally alert and focused on the road, even when cruise control is active. Regularly scanning the surroundings, checking mirrors, and monitoring traffic conditions are essential habits to maintain, promoting a safe and secure driving experience.

The Role of Driver Responsibility

Drivers must recognize that the safe operation of their vehicle is ultimately their responsibility. While cruise control can assist in maintaining a constant speed, it is the driver’s duty to actively observe and respond to changing road conditions, traffic situations, and unexpected events. Staying engaged, alert, and involved in the driving process is essential to ensuring a safe and enjoyable journey.

By prioritizing attention and active engagement while using cruise control, drivers can maximize the benefits of this feature while ensuring the safety and well-being of everyone on the road.

Electronic Throttle Control Systems (ETCS)

Some vehicles are equipped with electronic throttle control systems, also known as drive-by-wire systems . These advanced systems integrate the cruise control functionality with the engine control module, providing a seamless and efficient driving experience.

ETCS allows for the integration of cruise control with the throttle control, enabling precise control of the engine speed for maintaining a constant velocity. By electronically regulating the throttle opening, ETCS ensures smooth acceleration and deceleration, enhancing driver comfort and fuel efficiency.

ETCS systems utilize sensors and actuators to translate driver inputs into electronic signals, eliminating the need for a physical connection between the accelerator pedal and the throttle body. This drive-by-wire technology provides improved response and reliability.

However, like any complex system, ETCS can experience failures and malfunctions. These system failures may require the expertise of a trained mechanic for diagnosis and repair to ensure the safe and proper functioning of the cruise control integration with electronic throttle control systems .

It’s essential to address any ETCS system failures promptly to prevent disruptions in cruise control functionality and maintain optimal driving performance.

To illustrate the integration of cruise control with electronic throttle control systems, refer to the following table:

By understanding the integration of cruise control with electronic throttle control systems, drivers can appreciate the advanced technologies behind their vehicles and better address any potential ETCS system failures that may arise.

Common Misconceptions and Solutions

When it comes to cruise control, there are several common misconceptions that can lead to frustration and misunderstandings. It’s important to debunk these misconceptions and provide solutions to common cruise control problems.

One misconception is that cruise control can operate in all driving conditions. While cruise control is a convenient feature, it may not be suitable for certain situations such as heavy traffic, slippery road conditions, or hilly terrains. It’s important to use cruise control responsibly and be aware of the limitations.

Another misconception is that cruise control is immune to various vehicle issues. In reality, cruise control can be affected by problems such as a faulty brake light switch, worn-out cruise control switch function, vacuum leaks, or electrical problems. To address these issues, it’s essential to follow the troubleshooting tips and solutions provided in this article.

By understanding the misconceptions surrounding cruise control and utilizing the solutions provided, you can effectively troubleshoot and resolve common cruise control problems. Take control of your cruise control system and enjoy a smooth and reliable driving experience.

Consult a Professional

If you are facing issues with your cruise control and are unsure about how to diagnose or fix them, it is always recommended to consult a professional. Seeking the expertise of a trusted mechanic or automotive technician can provide you with the necessary guidance and assistance to ensure the safe and proper functioning of your vehicle’s cruise control system.

Fixing cruise control problems can sometimes be complex, requiring specialized knowledge and tools. A professional can accurately diagnose the issue and recommend the appropriate solutions, saving you time, effort, and potential frustration.

By consulting a professional, you can have peace of mind knowing that your cruise control system is being handled by someone with the expertise and experience to effectively address the problem. They can evaluate the various components of the system, such as the brake light switch, control switches, and engine control module, to determine the root cause of the issue and provide a reliable solution.

Remember, the safety of your vehicle and passengers should always be a top priority. A professional’s thorough knowledge and understanding of cruise control systems make them the best resource when it comes to troubleshooting and resolving any issues that arise.

Whether it’s seeking expert advice or entrusting the repair process to a qualified technician, consulting a professional ensures that your cruise control system receives the attention it deserves, allowing you to operate your vehicle with confidence and peace of mind.

Troubleshooting cruise control problems can sometimes be challenging, but with the help of this comprehensive guide, you can effectively diagnose and fix issues with your cruise control system. By following the troubleshooting tips and solutions provided, you’ll be able to overcome common obstacles and restore the proper functioning of your cruise control.

Remember, safety should always be your top priority. If you’re unsure about any step of the troubleshooting process or if the problem persists, it’s crucial to consult a professional mechanic or automotive technician. They have the expertise and knowledge to provide accurate diagnosis and repair services, ensuring the safe and reliable operation of your cruise control system.

With proper attention and maintenance, your cruise control system can continue to provide a convenient and reliable driving experience. By staying informed and proactive, you can quickly identify and resolve cruise control problems, saving time and money in the long run. So don’t let cruise control troubles slow you down – empower yourself with the right knowledge and keep cruising smoothly on the open road!

How does cruise control work?

Cruise control works by maintaining a selected constant speed without needing to use the accelerator pedal. Once the cruising speed is set, the cruise control module takes over the throttle body to maintain the speed of the car. Adjustments are made to the throttle body opening to maintain the desired cruising speed.

What are some common reasons for cruise control failure?

Common reasons for cruise control failure include a faulty brake light switch, worn-out cruise control switch function, brake light issues , spiral cable fault , check engine light, blown fuses or damaged relays, vacuum leaks, vehicle speed sensor fault , ABS sensor faults , and electrical problems.

What are some common issues with Ford cruise control?

Common issues with Ford cruise control include burned out brake lights , blown fuses, broken brake light switch , faulty shifter actuator , and faulty control switches.

What are some troubleshooting tips for cruise control issues?

To troubleshoot cruise control issues, you can check the brake light switch, inspect the cruise control switch function, ensure the brake lights are functioning correctly, check the spiral cable, address any check engine light issues, inspect fuses and relays , check for vacuum leaks, inspect the vehicle speed sensor, address ABS sensor faults, and diagnose any electrical problems.

How can I fix cruise control problems?

Fixing cruise control problems may involve replacing the brake light switch, repairing the cruise control switch function, addressing brake light issues , replacing the spiral cable, resolving check engine light problems, replacing blown fuses or damaged relays, fixing vacuum leaks, replacing the vehicle speed sensor, addressing ABS sensor faults, or resolving electrical problems.

Is cruise control a fully autonomous driving system?

No, cruise control is not a fully autonomous driving system. It should be considered an aid to driving and not a substitute for active engagement with the road. It’s important to remain vigilant and pay attention to other road users to avoid collisions.

What are electronic throttle control systems (ETCS)?

Electronic throttle control systems, also known as drive-by-wire systems , are systems where the cruise control is integrated with the engine control module. ETCS system failures may require the attention of a trained mechanic for diagnosis and repair.

What are some common misconceptions about cruise control?

Common misconceptions about cruise control include its ability to operate in all driving conditions and its immunity to various vehicle issues. It’s important to understand that cruise control has limitations and can be affected by different factors.

Should I consult a professional for cruise control issues?

If you are unsure about how to diagnose or fix cruise control problems, it is always recommended to consult a professional. A trusted mechanic or automotive technician can provide expert advice and assistance to ensure the safe and proper functioning of your vehicle’s cruise control system.

How can I troubleshoot and fix cruise control problems?

By following the diagnostic tips and solutions provided in this article, you can effectively troubleshoot and resolve cruise control problems. It’s important to prioritize safety and consult a professional if needed.

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Cruise Control problem - and not the common ones!!

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Good Evening everyone, Been having some trouble with the cruise control on my new Navara. It is an 07 plate auto box Aventura. I am at the point of scratching my head and wondering if anyone has seen this before. The cruise control is not working at all, i.e. the "cruise" light isn't even coming on. This I believe would also rule out the usual switches (brake pedal, etc.). I have checked these switches and they are working. There is an error code of P0581, which I believe is STRG SW/CIRC (meaning the ASCD control switch), thanks to a fellow forum member for posting this info! I have also found this link here: http://www.defcon54.com.ar/images/DIY%2 ... %20Eng.pdf This is a good reference for the detailed layout of the system. The output from the clock spring is giving the resistances stated in this document when the relevant switches are pressed. This seems to be pointing me to the wiring between the spiral clock and the ECU. The wiring diagram in the link refers to a Super Multiple Junction (M91), does anyone know where this is? If anyone has any other thoughts they would be much appreciated as I am starting to get a bit frustrated with it all!! Thanks, Chris  

Have you checked the loom in the steering wheel?  

Everything in there is quite well wrapped up in there. I was hoping to find out the location of this M91 junction block before I started unraveling looms! Do you know if this is in amongst the connectors in there? Thanks for the reply.  

Before ripping stuff out, check all your fuses, there are four boxes hidden in various locations.  

Thanks Lookskyward, I have found and checked all 4 fuse boxes. There does not appear to be any that are used by the cruise control. I also cannot see any on the wiring diagram in that link I posted. Does anyone know of any fuses related to the CC that I might be missing?  

To be honest, given the complexity of modern vehicle electrics I would be tempted to remover and test them all for continuity just to be sure. Good luck :thumbright:  

Do any of your other buttons work on the steering wheel im have the same problem but no buttons work at all  

I am still working on this fault. The buttons on the left of my steering wheel work just not the cruise control ones. Have you checked your clock spring/spiral cable as this seems to be a common fault upon researching this?  

Not had a chance yet but im guessing it would be that as nothing works  

chrisjstedman, I've got the same problem. Checked Netral switch..OK, checked brake switch...OK, checked the steering wheel switches....OK (get the correct resistances). I have noticed that I am getting 5V on both the red (18) and black (17) wires to the ASCD switch unit. Possible combination switch short??? How did you go with yours? [attachment=0:1w16xrxr]WiringDiagram.PNG[/attachment:1w16xrxr]  

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It will be clock spring. The steering wheel has to come off, then replace the clock spring.  

+1 its a common place for a fault  

Replaced the clockspring and cruise control is working! Was a pretty straight forward job, a bit of fiddling but nothing overwhelming. Thanks for pointing me in the right direction! Didn't have a proper chance to test, but it seemed that the "resume" function is not working. Set, accelerate and speed decreasing work. Does the airbag light reset with the ECU reset "pedal dance" or is it a separate sequence?  

The airbag light should go out after a few seconds, if not you have possibly not reconnected it properly.  

You should have the battery disconnected and system discharged befor un plugging the airbag. You wouldn't want it to go off as you undid it. May be worth re disconnecting the battery and discharging the system. Then check connections.  

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