2020 Audi S3 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2020 Audi S3 and How to Fix Them

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Reviewed by
Andrew Hajjar
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 S3 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 S3 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 cruise control issue in a 2020 Audi S3?

When diagnosing a cruise control issue in a 2020 Audi S3, it's crucial to follow a methodical approach that prioritizes simpler checks before delving into more complex diagnostics. Begin by inspecting the cruise control fuse, as a blown fuse can easily disrupt the system's operation. Next, assess the functionality of the cruise control buttons on the steering wheel; malfunctioning buttons can prevent the system from engaging properly. Utilizing an OBD-II scanner to check for error codes is also essential, as it can highlight specific problems affecting the cruise control system. Additionally, ensure that the vehicle's speed sensors are functioning correctly, as they are integral to the cruise control's performance. Lastly, examine the wiring connections related to the cruise control system for any signs of damage or loose connections, as these can significantly hinder its operation. By systematically addressing these areas, you can effectively diagnose and resolve the cruise control issues in your Audi S3.

What are the common problems that could cause the cruise control to stop working in a 2020 Audi S3?

When troubleshooting the cruise control system in a 2020 Audi S3, it's essential to understand the common problems that may lead to its failure. One frequent issue is a faulty cruise control switch, which can hinder the system's ability to engage or disengage as intended. Additionally, speed sensor problems can disrupt the system's capacity to maintain a consistent speed, while a malfunctioning brake light switch may cause the cruise control to disengage unexpectedly when the brakes are applied. Another potential culprit is the throttle actuator; if it fails, the cruise control may struggle to adjust the throttle position correctly. Lastly, electrical problems, such as wiring issues or faults, can interfere with communication between the cruise control module and other components, resulting in system malfunctions. By identifying and addressing these issues, DIY enthusiasts can effectively diagnose and potentially resolve cruise control problems in their Audi S3.

How urgent is it to address the malfunctioning cruise control in a 2020 Audi S3?

Addressing a malfunctioning cruise control in a 2020 Audi S3 is of utmost urgency due to the significant safety risks it poses. A malfunction can lead to unexpected acceleration or deceleration, which can create dangerous driving conditions and increase the likelihood of accidents. Furthermore, the convenience and overall driving experience that cruise control offers are compromised when the system is not functioning correctly, making long drives more stressful and less enjoyable. Ignoring these symptoms can also lead to further complications, potentially resulting in more extensive damage to the vehicle's systems and incurring costly repairs down the line. Therefore, it is crucial to prioritize the diagnosis and repair of cruise control issues promptly to ensure both safety and the optimal performance of your Audi S3.

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2020 Audi S3 Cruise Control Issues: Causes & Repair Costs