2015 Audi A6 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2015 Audi A6 and How to Fix Them

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Reviewed by
Bo Fader
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 2015 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 2015 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 initial diagnostic steps to troubleshoot the non-functioning cruise control in a 2015 Audi A6?

When faced with a non-functioning cruise control system in a 2015 Audi A6, it's essential to adopt a systematic diagnostic approach. Start by checking the cruise control fuse, as a blown fuse can often be the simplest explanation for the malfunction. Next, verify that the cruise control settings are correctly configured according to the user manual, as incorrect settings can prevent the system from engaging. Inspect the cruise control buttons on the steering wheel for any signs of wear or malfunction, as these are critical for operation. Utilizing a diagnostic scanner to check for error codes can provide valuable insights into any underlying issues. Additionally, ensure that the vehicle speed sensor is functioning properly, as it is vital for the cruise control system to receive accurate speed readings. Finally, examine the brake and clutch switches, as these components are designed to disengage the cruise control when activated. By following these steps, you can effectively troubleshoot the cruise control issue and determine whether further professional assistance is necessary.

What are the common problems that could cause the cruise control to stop working in a 2015 Audi A6?

When troubleshooting the cruise control system in a 2015 Audi A6, it's essential to understand the common problems that may lead to its malfunction. 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, issues with the speed sensor can disrupt the system's ability to maintain a constant speed, leading to erratic behavior or complete failure. Another potential problem is a malfunctioning throttle actuator, which is responsible for adjusting the engine's throttle in response to cruise control settings. Electrical issues, such as blown fuses or damaged wiring, can also interfere with the cruise control's operation. Lastly, a failure in the cruise control module itself can prevent the system from engaging or maintaining the desired speed. If you experience any of these issues, it is advisable to consult a qualified mechanic for a thorough inspection and diagnosis to ensure your cruise control system is restored to proper working order.

How urgent is it to address the non-functioning cruise control in a 2015 Audi A6?

When it comes to the non-functioning cruise control in a 2015 Audi A6, understanding the urgency of the situation is crucial for any DIY enthusiast. While it may not seem like an immediate emergency, neglecting this issue can lead to more significant problems down the line. The cruise control system is not just a convenience; it plays a vital role in maintaining a steady speed, which can enhance fuel efficiency and reduce driver fatigue during long trips. If the cruise control is malfunctioning, it may signal deeper electronic or sensor issues that could compromise other vehicle functions. Therefore, addressing the problem promptly is essential to prevent potential safety hazards and avoid costly repairs in the future. For those inclined to tackle this issue themselves, it is advisable to start with a thorough diagnostic check of the cruise control system, as well as inspecting related components, to ensure that the vehicle remains safe and reliable on the road.

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