2020 Audi A6 Quattro Cruise Control Isn't Working

Fixing Cruise Control Issues in the 2020 Audi A6 Quattro

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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 2020 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 2020 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 2020 Audi A6 Quattro?

When faced with a non-functional cruise control in your 2020 Audi A6 Quattro, start by checking the cruise control fuse located in the fuse box; a blown fuse can often be the simplest fix. Next, ensure that the cruise control settings are correctly configured on your dashboard or steering wheel controls, as incorrect settings can prevent the system from engaging. Utilizing a diagnostic scanner to check for error codes can provide insight into any underlying issues that may not be immediately visible. Additionally, inspect the cruise control buttons on the steering wheel for any signs of physical damage or malfunction, as these can hinder functionality. It’s also crucial to test the brake pedal switch, since a faulty switch can interrupt the cruise control operation. Lastly, verify that the vehicle speed sensor is functioning properly, as it is essential for the cruise control system to operate effectively. By systematically following these steps, you can effectively diagnose and address the issues affecting your cruise control system.

What are the common problems that could cause the cruise control to stop working in a 2020 Audi A6 Quattro?

When troubleshooting the cruise control system in a 2020 Audi A6 Quattro, it's essential to understand the common problems that may lead to its malfunction. One prevalent issue is a faulty speed sensor, which can disrupt the system's ability to accurately gauge the vehicle's speed, preventing it from engaging or maintaining the desired speed. Additionally, the brake light switch plays a crucial role; if this switch is malfunctioning, it may inadvertently signal the cruise control to disengage, causing it to stop working. Another potential culprit is the throttle control system, where a defective throttle position sensor or actuator can hinder the cruise control's performance. Electrical problems, such as blown fuses or wiring issues, can also impede the system's functionality, as can software glitches within the vehicle's onboard computer. By identifying and addressing these common issues, you can effectively troubleshoot and restore the cruise control system to proper working order.

How urgent is it to address the non-functioning cruise control in a 2020 Audi A6 Quattro?

When it comes to a non-functioning cruise control in a 2020 Audi A6 Quattro, the urgency of addressing this issue cannot be overstated. Cruise control is not just a luxury; it plays a crucial role in enhancing driving comfort and safety, particularly during long trips. If your cruise control is malfunctioning, it may signal deeper electronic or sensor-related problems that could compromise the vehicle's overall performance. Ignoring this issue could lead to more significant safety hazards, such as unexpected acceleration or difficulty maintaining speed, which can be particularly dangerous on highways. For DIY enthusiasts, while it may be tempting to troubleshoot minor issues, it is essential to recognize that the complexity of modern vehicle systems often requires professional diagnostics. Therefore, if you notice your cruise control is not functioning, it is advisable to consult a qualified mechanic or an authorized Audi service center promptly to ensure your vehicle remains safe and reliable on the road.

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2020 Audi A6 Quattro Cruise Control Issues & Repair Costs