2021 Audi RS6 Avant Cruise Control Isn't Working

Fixing Cruise Control Issues in the 2021 Audi RS6 Avant

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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 2021 Audi RS6 Avant 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 2021 Audi RS6 Avant 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 steps to diagnose the non-functioning cruise control in a 2021 Audi RS6 Avant?

When diagnosing the non-functioning cruise control in your 2021 Audi RS6 Avant, it's essential to start with the simplest solutions before moving on to more complex diagnostics. Begin by checking the cruise control fuse; a blown fuse can easily disrupt the system's functionality. Next, ensure that the cruise control settings on your dashboard are correctly configured, as incorrect settings can prevent the system from engaging. If these initial checks do not resolve the issue, use a diagnostic tool to scan for any error codes that may indicate specific problems within the cruise control system. Additionally, inspect the cruise control buttons on the steering wheel for any signs of damage or malfunction, as these controls are crucial for operation. Finally, test other vehicle functions, such as the brake lights and speed sensor, to rule out any underlying issues that could be affecting the cruise control. By following this structured approach, you can effectively diagnose and potentially resolve the cruise control issue in your Audi.

What are the common problems that could cause the cruise control to stop working in a 2021 Audi RS6 Avant?

When the cruise control in your 2021 Audi RS6 Avant ceases to function, it can be frustrating, but understanding the common problems can help you diagnose the issue. One frequent culprit is a faulty speed sensor, which is essential for the cruise control system to accurately gauge your vehicle's speed. If this sensor is malfunctioning, the system may fail to engage or maintain speed. Another potential issue could be with the brake light switch; if this switch is defective, it may incorrectly signal the cruise control to disengage whenever the brake pedal is pressed. Additionally, problems with the throttle control system, such as a faulty throttle position sensor, can hinder the cruise control's ability to maintain a steady speed. Electrical issues, including blown fuses or wiring problems, can also disrupt the cruise control's operation, as can software glitches within the vehicle's onboard computer. By identifying these common problems, you can take the first steps toward troubleshooting and potentially fixing the cruise control system in your Audi RS6 Avant.

How urgent is it to address the malfunctioning cruise control in a 2021 Audi RS6 Avant?

When it comes to the malfunctioning cruise control in your 2021 Audi RS6 Avant, the urgency of addressing the issue cannot be overstated. A malfunctioning system can lead to unpredictable vehicle behavior, such as sudden acceleration or deceleration, which poses a significant safety risk not only to you but also to other road users. Moreover, the convenience and enjoyment of driving your Audi are compromised when cruise control fails to operate correctly. Beyond immediate safety concerns, neglecting this issue can lead to further complications, potentially damaging other vehicle systems and resulting in more extensive and costly repairs down the line. Therefore, it is crucial to prioritize the repair of your cruise control system to maintain both the safety and performance of your vehicle.

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