2000 Audi A6 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2000 Audi A6 and How to Fix Them

Find Repair Location
Reviewed by
Aisha
Written by RepairPal Car Genius
Updated January 14, 2025
0%
30% chance it's the
Sensor
0%
25% chance it's the
Control Module
0%
25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a 2000 Audi A6 cruise control isn't working are failed control module, sensor or switch issues, or throttle actuation problems.
  • Sensor: A faulty or malfunctioning sensor can lead to incorrect readings, causing issues with engine performance or other systems relying on accurate data.
  • Control Module: A faulty control module can lead to erratic vehicle behavior or failure of various electronic systems due to improper signal processing.
  • Throttle: A faulty throttle body or a defective accelerator pedal position sensor may be causing inconsistent throttle response.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2000 Audi A6 cruise control isn't working?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

When the vehicle speed sensor fails or the wiring harness prevents signal transmission, the speedometer is the first thing that will stop functioning properly. This can be an intermittent issue where the speedometer only works occasionally, the speedometer may cease all function, or the speedometer may read erratically or incorrectly. Also, the traction control and anti lock brake warning lights specific to each vehicle may be illuminated, depending on the design of those systems. You may notice the vehicle hesitate to accelerate, cruise control will not function properly, and the vehicle may not shift properly through all of the gears.

In the event that a wheel speed sensor fails, the ABS, traction control system (TCS) and manufacturer specific stability control system lights will illuminate, informing the driver that the systems are disabled. The vehicle will be more prone to tire slip, and normal driving patterns may need to be adjusted to correct for the loss of computer control. On older vehicle's, the speedometer can be affected, causing illumination of the check engine light as well.

A faulty cruise control module will simply result in deactivation of cruise control settings. This is because a detected error in the cruise control system could lead to hazardous driving conditions, so the module will be disabled, and the cruise control system warning light will be displayed. This will be a different message depending on make and model, and a warning light or message may be displayed on the driver instrument cluster.

What are the initial diagnostic steps to troubleshoot the non-functional cruise control in a 2000 Audi A6?

When troubleshooting the non-functional cruise control in a 2000 Audi A6, it's essential to adopt a systematic diagnostic approach. Begin by checking the cruise control fuse, as a blown fuse is a straightforward issue that can easily disrupt the system's operation. Next, inspect the cruise control buttons on the steering wheel; if they are unresponsive, they may need repair or replacement. Following this, verify the functionality of the speed sensors, as they play a crucial role in the cruise control system's ability to maintain speed. Utilizing a diagnostic scanner to check for error codes can provide valuable insights into any underlying issues. Additionally, examine the vacuum lines for leaks or damage, as these can significantly affect the system's performance. Finally, if all else checks out, test the cruise control module itself, as a malfunctioning module could be the root cause of the problem. By following these steps, you can effectively diagnose and potentially resolve the cruise control issue in your Audi A6.

What are the common problems that could cause the cruise control to stop working in a 2000 Audi A6?

When troubleshooting the cruise control system in a 2000 Audi A6, it's essential to understand the common problems that may lead to its failure. One of the primary culprits is a faulty brake light switch, which can prevent the cruise control from engaging since the system is designed to deactivate when the brake pedal is pressed. Additionally, a defective cruise control module can significantly impair the system's functionality, rendering it ineffective. Another potential issue is vacuum leaks, which can disrupt the necessary vacuum pressure for the cruise control to operate correctly. Furthermore, a malfunctioning speed sensor can hinder the system's ability to maintain a set speed, while various electrical issues, such as blown fuses or wiring problems, can also contribute to the cruise control's failure. By identifying these common problems, DIY enthusiasts can better diagnose and address the issues affecting their vehicle's cruise control system.

How urgent is it to repair the non-functioning cruise control in a 2000 Audi A6?

When it comes to the urgency of repairing the non-functioning cruise control in a 2000 Audi A6, several critical factors underscore the need for prompt attention. First and foremost, safety is paramount; a malfunctioning cruise control system can lead to erratic vehicle behavior, such as unexpected acceleration or deceleration, which poses significant risks on the road. Additionally, the absence of cruise control can detract from the overall driving experience, making long trips more tiring and less enjoyable as the driver must constantly manage speed manually. This not only affects comfort but can also lead to fatigue, increasing the likelihood of accidents. Furthermore, addressing the cruise control issue promptly can help maintain the vehicle's resale value. A well-maintained car is more appealing to potential buyers, and neglecting repairs can diminish its worth over time. Lastly, seeking a professional diagnostic assessment is crucial; delaying repairs may result in further complications and higher costs down the line. Therefore, it is advisable to prioritize the repair of the cruise control system to ensure safety, enhance driving comfort, and protect the vehicle's value.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.