2020 Audi S5 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2020 Audi S5 and How to Fix Them

Find Repair Location
Reviewed by
Aisha
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 S5 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 S5 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 steps should I take to diagnose the non-functioning cruise control in my 2020 Audi S5?

To effectively diagnose the non-functioning cruise control in your 2020 Audi S5, begin with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by inspecting the cruise control fuse located in the fuse box, as a blown fuse is a common and easily fixable issue that can halt the system's operation. Next, examine the cruise control buttons on your steering wheel for any signs of damage or sticking, as these can prevent the system from engaging. Following this, verify the functionality of the speed sensors on the wheels, since faulty sensors can disrupt the cruise control's ability to maintain speed. Utilizing an OBD-II scanner to check for error codes can provide valuable insights into any underlying issues related to the cruise control system. Additionally, ensure that the brake and clutch switches are functioning correctly, as malfunctioning switches can disable cruise control. Finally, inspect the wiring and connections associated with the cruise control system for any damage or corrosion, as these can lead to operational failures. By following this structured diagnostic approach, you can efficiently identify 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 S5?

When the cruise control in a 2020 Audi S5 ceases to function, several common issues may be at play. One of the primary culprits is a faulty speed sensor, which can hinder the system's ability to accurately gauge the vehicle's speed, preventing it from engaging or maintaining the desired speed. Additionally, a malfunctioning brake light switch can disrupt the cruise control system, as it is designed to deactivate when the brakes are applied. Throttle-related problems, such as a stuck throttle or issues with the throttle position sensor, can also interfere with the cruise control's performance. Electrical problems, including blown fuses or wiring issues, may further complicate the situation, as can vacuum leaks in the engine system, which are essential for the cruise control's operation. By understanding these potential issues, DIYers can effectively troubleshoot and resolve cruise control malfunctions in their Audi S5, ensuring a smoother driving experience.

How urgent is it to address the malfunctioning cruise control in a 2020 Audi S5?

Addressing a malfunctioning cruise control in a 2020 Audi S5 is of utmost urgency due to the significant safety risks it poses. A faulty system can lead to unexpected acceleration or deceleration, which can endanger both the driver and other road users. Moreover, neglecting these symptoms can compromise the overall driving experience, making it inconvenient and stressful to operate the vehicle. Additionally, allowing the issue to persist may result in further damage to the vehicle's systems, leading to more extensive and costly repairs down the line. Therefore, it is crucial to diagnose and repair any cruise control malfunctions promptly, ensuring not only the safety and performance of the vehicle but also protecting your investment in the long run.

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.