2012 Audi A6 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2012 Audi A6 and How to Fix Them

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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 2012 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 2012 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.

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 steps to diagnose the non-functioning cruise control in a 2012 Audi A6?

When diagnosing the non-functioning cruise control in a 2012 Audi A6, it's essential to adopt a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Begin by inspecting the cruise control fuse located in the fuse box, as a blown fuse is a straightforward issue that can easily disrupt functionality. Next, examine the cruise control buttons on the steering wheel for any signs of damage or sticking, as these can prevent the system from engaging properly. Following this, verify the operation of the speed sensors, since faulty sensors can lead to cruise control malfunctions. It's also crucial to check the brake pedal switch, which is integral to the cruise control system; if this switch is not functioning correctly, it can inhibit cruise control activation. Utilizing a diagnostic scanner to scan for error codes can provide valuable insights into any underlying issues. Lastly, inspect the wiring and connections associated with the cruise control system for any loose or damaged components, as these can significantly impact performance. By methodically following these steps, you can effectively identify and address the root cause of the cruise control malfunction in your Audi A6.

What are the common problems that could cause the cruise control to stop working in a 2012 Audi A6?

When troubleshooting the cruise control system in a 2012 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 system from engaging if it fails to detect 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 or non-functional cruise control. Vacuum leaks are another potential issue, as they can interfere with the operation of the cruise control system, causing it to malfunction. Furthermore, a defective cruise control module may also be responsible for the system's failure, as it plays a crucial role in controlling the cruise function. Lastly, electrical problems, such as blown fuses or damaged wiring, can significantly impact the cruise control's performance. Identifying these common problems can help DIY enthusiasts effectively diagnose and address the issues, although consulting a professional mechanic is advisable for a thorough inspection and repair.

How urgent is it to address the non-functioning cruise control in a 2012 Audi A6?

When it comes to the non-functioning cruise control in a 2012 Audi A6, the urgency of addressing the problem should not be underestimated. While it may not pose an immediate safety risk, a malfunctioning cruise control system can lead to increased driver fatigue during long trips, making it essential for comfort and convenience on the road. Moreover, this issue could be symptomatic of deeper electronic or sensor problems within the vehicle, which might affect other critical systems. Ignoring the malfunction could result in further complications, leading to more extensive and costly repairs down the line. Therefore, it is advisable to consult a qualified mechanic as soon as possible to diagnose and rectify the issue, ensuring a safer and more enjoyable driving experience.

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Troubleshooting Cruise Control Issues in 2012 Audi A6