2012 Audi S5 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2012 Audi S5 and How to Fix Them

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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 2012 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 2012 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 are the steps to diagnose the cruise control issue in a 2012 Audi S5?

When diagnosing a cruise control issue in a 2012 Audi S5, it's essential to adopt a systematic approach that begins with the simplest solutions before progressing to more complex diagnostics. Start by checking the cruise control fuse in the fuse box, as a blown fuse is a common and easily fixable problem that can disrupt the system's functionality. Next, inspect the cruise control buttons on the steering wheel for any signs of damage or wear, since faulty buttons can prevent the system from engaging. If these initial checks do not reveal the issue, use an OBD-II scanner to scan for error codes, which can provide insights into any underlying problems. Following this, examine the speed sensors on the wheels, as malfunctioning sensors can hinder the cruise control's ability to maintain speed. If everything appears normal so far, test the cruise control module to ensure it is sending the correct signals; a malfunction here can lead to significant issues. Finally, inspect the wiring and connections associated with the cruise control system for any damage or loose connections, as these can cause intermittent problems. By following this structured diagnostic approach, you can effectively identify and address the root cause of the cruise control issue in your Audi S5.

What are the common problems that could cause the cruise control to stop working in a 2012 Audi S5?

When troubleshooting the cruise control system in a 2012 Audi S5, it's essential to understand the common problems that may lead to its malfunction. One of the primary culprits is a faulty brake light switch, which can prevent the cruise control from engaging since the system is designed to deactivate when the brake pedal is pressed. Additionally, issues with the speed sensor can disrupt the system's ability to maintain a constant speed, leading to failure. Vacuum leaks within the cruise control system can also hinder its performance, as they affect the necessary pressure for operation. Furthermore, a defective cruise control module may be responsible for the system's inability to function correctly. Lastly, electrical problems, including blown fuses or wiring issues, can significantly impact the cruise control's functionality. By identifying and addressing these common issues, you can effectively troubleshoot and restore the cruise control system in your Audi S5.

How urgent is it to address the non-functioning cruise control in a 2012 Audi S5?

When it comes to the non-functioning cruise control in a 2012 Audi S5, understanding the urgency of the situation is crucial for any DIY enthusiast. While the immediate safety risks may not be as severe as those associated with malfunctioning brakes or steering, neglecting the cruise control issue can lead to greater inconveniences and potential complications down the line. The cruise control system is designed to enhance driving comfort and efficiency, particularly on long trips, and its failure can result in increased driver fatigue and reduced fuel economy. Moreover, unresolved issues with the cruise control may signal underlying problems within the vehicle's electrical or mechanical systems, which could escalate into more significant repairs if left unchecked. Therefore, it is advisable to address the non-functioning cruise control promptly, not only to restore the convenience it offers but also to ensure the overall performance and reliability of your Audi S5. Taking action sooner rather than later can save you from more extensive repairs and enhance your driving experience.

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