2015 Audi RS5 Cruise Control Isn't Working

Fixing cruise control issues in your 2015 Audi RS5 for restored functionality

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Reviewed by
Bo Fader
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 2015 Audi RS5 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 2015 Audi RS5 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 2015 Audi RS5?

To effectively diagnose the non-functioning cruise control in your 2015 Audi RS5, start with a systematic approach that prioritizes simpler solutions before delving into more complex diagnostics. Begin by checking the cruise control fuse in the fuse box, as a blown fuse is a straightforward fix that can often resolve the issue. Next, inspect the cruise control buttons on the steering wheel for any damage or obstructions, ensuring they are clean and operational. Following this, verify the functionality of the speed sensors, as faulty sensors can disrupt the cruise control system's performance. Utilizing an OBD-II scanner to scan for error codes can provide valuable insights into any underlying issues. Additionally, check the brake and clutch switches, as malfunctioning switches can prevent the cruise control from engaging. It’s also important to examine the wiring and connections for any signs of damage or corrosion, which may require repair or replacement. If these steps do not resolve the issue, testing or replacing the cruise control module may be necessary. By following this diagnostic approach, you can efficiently identify and address the problem with your cruise control system.

What are the common problems that could cause the cruise control to stop working in a 2015 Audi RS5?

When troubleshooting the cruise control system in a 2015 Audi RS5, it's essential to understand the common problems that may lead to its malfunction. One prevalent issue is a faulty speed sensor, which can disrupt the system's ability to accurately gauge the vehicle's speed, preventing the cruise control from engaging or maintaining the desired speed. Additionally, problems with the brake light switch can pose significant challenges; since the cruise control is designed to disengage when the brake pedal is pressed, a malfunctioning switch may cause the system to fail entirely. Another critical component to consider is the throttle actuator, as any malfunction here can hinder the system's capacity to maintain speed effectively. Furthermore, a defective cruise control module can interrupt communication between various system components, leading to operational failures. Lastly, electrical problems such as wiring issues or blown fuses can also contribute to the cruise control's ineffectiveness. By identifying and addressing these common issues, DIY enthusiasts can take the first steps toward diagnosing and potentially repairing the cruise control system in their Audi RS5.

How urgent is it to address the non-functioning cruise control in a 2015 Audi RS5?

Addressing the non-functioning cruise control in your 2015 Audi RS5 is crucial for both safety and vehicle performance. When this feature fails, it may not only lead to driver fatigue during long trips but could also indicate deeper electronic or sensor issues within the vehicle. Ignoring the problem can result in further complications, potentially affecting other critical systems and overall vehicle reliability. Moreover, a malfunctioning cruise control system can create hazardous driving conditions, especially if it impacts your ability to maintain speed on highways. Therefore, it is essential to prioritize the inspection and repair of the cruise control system, either through a qualified mechanic or dealership, to ensure your vehicle remains safe and efficient on the road. Taking prompt action not only enhances your driving experience but also safeguards against more significant repairs down the line.

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