Audi TT RS Quattro Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your Audi TT RS Quattro 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 Audi TT RS Quattro 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 Audi TT RS Quattro 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.

Troubleshooting Cruise Control Issues in an Audi TT RS Quattro

When troubleshooting cruise control issues in your Audi TT RS Quattro, begin with the simplest checks to identify the problem efficiently. Start by inspecting the brake pedal switch, as a malfunctioning switch can prevent the cruise control from engaging; if the brake lights remain on, this is a clear indicator of a faulty switch. Next, consider resetting the system by disconnecting the battery for a few minutes, which has been reported to temporarily resolve issues for some drivers. If the problem persists, utilize a VAG diagnostic tool to access the cruise control measuring blocks, allowing you to pinpoint any faults in the control module or sensors. Pay attention to any error codes that may indicate specific issues, such as problems with throttle actuation or coding errors in module 16. By following this structured approach, you can effectively diagnose and potentially resolve cruise control malfunctions, ensuring a smoother driving experience.

Troubleshooting Cruise Control Issues in an Audi TT RS Quattro

When troubleshooting cruise control issues in your Audi TT RS Quattro, it's crucial to understand the common problems that may arise. A failed control module is often at the heart of the issue, as it plays a vital role in the cruise control system's functionality. Additionally, sensor or switch failures can disrupt the system, so checking these components is essential. Throttle actuation problems can also hinder cruise control performance, making it important to inspect the throttle system for any irregularities. Another common culprit is the brake switch; if this switch is malfunctioning, it can prevent the cruise control from engaging properly. Furthermore, a blown fuse or a defective brake pedal switch can lead to similar issues, so these should be examined as well. For a quick fix, some users have found that resetting the system by disconnecting the battery can temporarily restore functionality, although this may not be a permanent solution. By systematically checking these areas, you can effectively diagnose and potentially resolve cruise control issues in your Audi TT RS Quattro before seeking professional help.

Why is the Cruise Control Not Working in an Audi TT RS Quattro?

When the cruise control in your Audi TT RS Quattro fails, it’s crucial to address the issue without delay. Ignoring the malfunction can lead to unsafe driving conditions, particularly if the system intermittently engages or fails completely. Common causes such as a faulty control module, sensor, or brake pedal switch can not only hinder your driving experience but may also indicate deeper electrical issues that could affect other vehicle systems. Additionally, throttle actuation problems can compromise your vehicle's performance, making it essential to diagnose and resolve these issues promptly. By taking action early, you can prevent further damage and ensure your Audi TT RS Quattro remains safe and enjoyable to drive.

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