2012 Audi A6 Quattro Cruise Control Isn't Working

Fixing Cruise Control Issues in Your 2012 Audi A6 Quattro

Find Repair Location
Reviewed by
Devin Cabugcal
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 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 2012 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-functioning cruise control in a 2012 Audi A6 Quattro?

When faced with a non-functioning cruise control in your 2012 Audi A6 Quattro, it's important to approach the troubleshooting process methodically. Begin by checking the cruise control fuse located in the fuse box, as a blown fuse is a common and easily fixable issue. Next, inspect the cruise control buttons on the steering wheel to ensure they are operational, as malfunctioning buttons can prevent the system from engaging. It's also crucial to verify the speed sensors, as faulty sensors can disrupt the cruise control functionality. Utilizing a diagnostic scanner to check for error codes can provide valuable insights into specific problems affecting the system. Additionally, examine the brake and clutch switches, as these components are essential for cruise control activation; any faults here can hinder performance. Finally, inspect the wiring and connections associated with the cruise control system for signs of damage or corrosion, as compromised wiring can lead to operational failures. By following these steps, you can effectively diagnose and potentially resolve the issues with your cruise control system, empowering you to take control of your vehicle's functionality.

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

When the cruise control in a 2012 Audi A6 Quattro ceases to function, it can be frustrating, but understanding the common problems can help you diagnose the issue effectively. One of the primary culprits is a faulty brake light switch, which is crucial for the cruise control system as it disengages the system when the brake pedal is pressed. If this switch malfunctions, it may prevent the cruise control from engaging at all. Another potential issue is related to the speed sensor; if this component fails, the cruise control may struggle to maintain a consistent speed, leading to erratic behavior. Additionally, vacuum leaks can disrupt the system's ability to hold speed, as they create inconsistencies in the pressure required for proper operation. A defective cruise control module can also be a significant factor, as it is the brain of the system, and any faults here can lead to complete failure. Lastly, electrical problems, such as blown fuses or damaged wiring, can impede the functionality of the cruise control system. By systematically checking these components, you can effectively troubleshoot and potentially resolve the issues with your Audi's cruise control.

How urgent is it to address the malfunctioning cruise control in a 2012 Audi A6 Quattro?

Addressing a malfunctioning cruise control in a 2012 Audi A6 Quattro is of utmost importance due to the potential safety risks it poses. A faulty system can lead to unexpected acceleration or deceleration, which can be dangerous while driving, especially at high speeds. Additionally, a malfunctioning cruise control can detract from the overall driving experience, making it inconvenient to maintain a steady speed on long journeys. Beyond immediate safety concerns, neglecting this issue may also result in decreased fuel efficiency, as the vehicle may not operate optimally. Furthermore, continued use of a malfunctioning system could lead to more significant damage to other vehicle components, ultimately resulting in costly repairs. Therefore, it is crucial to address any cruise control issues promptly to ensure both safety and the efficient operation of your Audi A6 Quattro.

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.