2022 Audi S8 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2022 Audi S8 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 2022 Audi S8 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 2022 Audi S8 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 2022 Audi S8?

To effectively diagnose the non-functioning cruise control in your 2022 Audi S8, start with a methodical approach that emphasizes simplicity and accessibility. Begin by checking the cruise control fuse, as a blown or damaged fuse can often be the culprit behind system failures. Next, inspect the cruise control buttons on the steering wheel to ensure they are not stuck or damaged, as this can prevent proper engagement. Utilizing a diagnostic tool to scan for error codes is a crucial step, as it can reveal underlying issues that may not be immediately visible. Additionally, examine the brake pedal switch, which is essential for disengaging the cruise control when the brake is applied; a malfunction here can disrupt the entire system. Finally, verify the functionality of the vehicle speed sensor, as accurate speed readings are vital for the cruise control to operate correctly. By following these steps, you can systematically identify and address the root cause of your cruise control issues, empowering you to take control of your vehicle's performance.

What are the common problems that could cause the cruise control to stop working in a 2022 Audi S8?

When the cruise control in a 2022 Audi S8 ceases to function, several common issues may be at play. One of the primary culprits is a faulty speed sensor, which is crucial for the system to accurately gauge the vehicle's speed; without it, the cruise control may fail to engage or maintain speed. Additionally, problems with the brake light switch can disrupt the system, as it is designed to deactivate when the brake pedal is pressed. If this switch is malfunctioning, it can prevent the cruise control from operating correctly. Another potential issue lies within the throttle control system; a defective throttle position sensor or actuator can hinder the cruise control's ability to sustain a steady speed. Electrical problems, such as blown fuses or wiring issues, can also interfere with the cruise control module, leading to operational failures. Lastly, vacuum leaks in the engine can impact the cruise control's performance, as it relies on vacuum pressure to function effectively. By understanding these common problems, DIY enthusiasts can better diagnose the issue and seek appropriate repairs to restore cruise control functionality.

How urgent is it to address the malfunctioning cruise control in a 2022 Audi S8?

When it comes to the malfunctioning cruise control in a 2022 Audi S8, the urgency of addressing the issue cannot be overstated. A faulty cruise control system not only diminishes the convenience and enjoyment of driving but also poses significant safety risks. If the cruise control fails to disengage or behaves erratically, it can lead to dangerous driving situations, increasing the likelihood of accidents. Moreover, neglecting this problem can exacerbate the issue, potentially causing further damage to the vehicle's electronic systems or mechanical components, which may result in more extensive and costly repairs. By prioritizing the repair of your cruise control, you ensure that your Audi S8 remains reliable and performs optimally, allowing you to enjoy a safe and smooth driving experience. Therefore, it is crucial to take immediate action if you notice any signs of malfunction in your cruise control system.

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