2006 Audi A6 Quattro Cruise Control Isn't Working

Fixing Cruise Control Issues in 2006 Audi A6 Quattro

Find Repair Location
Reviewed by
Andrew Hajjar
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 2006 Audi A6 Quattro 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 2006 Audi A6 Quattro 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.

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.

What are the initial diagnostic steps to troubleshoot the non-functional cruise control in a 2006 Audi A6 Quattro?

When troubleshooting the non-functional cruise control in a 2006 Audi A6 Quattro, 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. Next, inspect the cruise control buttons on the steering wheel; if they are unresponsive, they may need repair or replacement. Following this, verify the speed sensors, as they play a crucial role in the cruise control's operation; any malfunction here can prevent the system from engaging. Utilizing a diagnostic scanner to check for error codes can provide valuable insights into specific issues affecting the cruise control system. Additionally, inspect the vacuum lines for any leaks or damage, as these can significantly impact the system's performance. Finally, if all else checks out, test the cruise control module itself, as a faulty module may 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 Quattro.

What are the common problems that could cause the cruise control to stop working in a 2006 Audi A6 Quattro?

When troubleshooting the cruise control system in a 2006 Audi A6 Quattro, 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 it is designed to deactivate when the brake pedal is pressed. Additionally, issues with the speed sensor can disrupt the system's ability to maintain a constant speed, leading to erratic behavior or complete failure. Vacuum leaks are another significant concern, as they can interfere with the system's operation, causing it to malfunction. Furthermore, a defective cruise control module may also be responsible for the system's inability to function correctly. Lastly, electrical problems, including blown fuses or wiring issues, can severely impact the performance of the cruise control system. By identifying and addressing these common issues, DIY enthusiasts can effectively diagnose and potentially resolve the cruise control problems in their Audi A6 Quattro.

How urgent is it to address the non-functioning cruise control in a 2006 Audi A6 Quattro?

When it comes to a non-functioning cruise control in a 2006 Audi A6 Quattro, the urgency of addressing the issue cannot be overstated. A malfunctioning cruise control system poses significant safety risks, particularly during long drives or highway travel where maintaining a steady speed is crucial. Without this feature, drivers may find themselves more fatigued and less focused, increasing the likelihood of accidents. Additionally, the comfort of driving is compromised, as the driver must constantly manage the accelerator, which can be particularly taxing on longer journeys. It is also wise to seek a diagnostic assessment from a qualified mechanic, as delaying repairs may lead to more severe complications and costly fixes down the line. Furthermore, neglecting this issue can adversely affect the vehicle's resale value; potential buyers are often deterred by vehicles with unresolved mechanical problems. Therefore, while it may not seem like an immediate emergency, addressing the non-functioning cruise control promptly is essential for ensuring safety, enhancing driving comfort, and preserving 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.