2010 Audi S4 Cruise Control Isn't Working

Diagnosing Common Issues with the Cruise Control System in Your 2010 Audi S4 and How to Fix Them

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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 2010 Audi S4 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 2010 Audi S4 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 2010 Audi S4?

When diagnosing a cruise control issue in a 2010 Audi S4, it's crucial to follow a methodical diagnostic approach that prioritizes simpler checks before moving on to more complex solutions. Begin by inspecting the cruise control fuse, as a blown fuse can easily disrupt the system's operation. Next, check the functionality of the cruise control buttons on the steering wheel, since malfunctioning buttons can prevent proper engagement. Utilizing an OBD-II scanner to identify any error codes is also essential, as it can highlight specific problems within 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. Inspect the wiring connections for any signs of damage or corrosion, as these can impede the system's operation. Finally, test the cruise control module to confirm its proper functioning. If these steps do not resolve the issue, it may be necessary to consult a professional mechanic with expertise in Audi vehicles for a comprehensive diagnosis and repair. By adhering to this structured approach, you can effectively troubleshoot and resolve cruise control issues in your Audi S4.

What are the common problems that could cause the cruise control to stop working in a 2010 Audi S4?

When dealing with a non-functional cruise control system in a 2010 Audi S4, it's essential to understand the common issues that may be at play. One frequent culprit is a faulty cruise control switch, which can hinder the system's ability to engage or disengage as intended. Additionally, a blown fuse within the cruise control circuit can disrupt its operation, making it crucial to check the fuse box for any signs of damage. Another potential issue is a defective speed sensor, which is vital for maintaining a consistent speed; if this sensor fails, the cruise control may not function correctly. Furthermore, problems with the brake light switch can lead to unexpected disengagement of the cruise control when the brakes are applied, creating an unsafe driving situation. Lastly, a malfunctioning throttle actuator can prevent the system from maintaining the desired speed, further complicating the issue. By systematically examining these components, DIYers can effectively troubleshoot and potentially resolve the cruise control problems in their Audi S4.

How urgent is it to address the malfunctioning cruise control in my 2010 Audi S4?

Addressing a malfunctioning cruise control in your 2010 Audi S4 is crucial for both safety and vehicle performance. When cruise control fails, it can result in unpredictable acceleration or deceleration, creating hazardous driving conditions that could lead to accidents. Additionally, a malfunctioning system can detract from the overall driving experience, particularly during long trips where cruise control is often utilized for comfort and convenience. Ignoring these symptoms not only risks immediate safety but can also lead to more extensive damage to your vehicle's systems over time, resulting in costly repairs. Therefore, it is essential to prioritize the diagnosis and repair of your cruise control system to ensure safe driving and maintain the optimal functionality of your Audi S4.

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