2020 Audi TT Quattro Cruise Control Isn't Working

Fixing Cruise Control Issues in Your 2020 Audi TT Quattro

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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 2020 Audi TT 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 2020 Audi TT 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.

What steps should I take to diagnose the non-functioning cruise control in my 2020 Audi TT Quattro?

To effectively diagnose the non-functioning cruise control in your 2020 Audi TT Quattro, begin with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by inspecting the cruise control fuse located in the fuse box, as a blown fuse is a common and easily rectifiable issue. Next, examine the cruise control buttons on your steering wheel for any signs of damage or sticking, as these can hinder the system's operation. Following this, verify the functionality of the speed sensor, since a malfunction here can disrupt the cruise control's ability to engage. Utilizing an OBD-II scanner to check for error codes can provide valuable insights into any underlying issues affecting the system. Additionally, ensure that the brake and clutch switches are functioning correctly, as faulty switches can prevent activation. Finally, inspect the wiring and connections associated with the cruise control system for any damage or corrosion, as poor connections can lead to failure. By following this diagnostic approach, you can efficiently identify the root cause of the cruise control malfunction and take appropriate action to resolve it.

What are the common problems that could cause the cruise control to stop working in a 2020 Audi TT Quattro?

When troubleshooting the cruise control system in a 2020 Audi TT Quattro, it's essential to consider several common problems that could be affecting its functionality. One of the primary culprits is a faulty cruise control switch, which can hinder the system from engaging or disengaging as intended. Additionally, a malfunctioning speed sensor may prevent the cruise control from maintaining a steady speed, leading to erratic performance. Another critical component to check is the brake light switch; if this switch is defective, it can cause the cruise control to disengage unexpectedly whenever the brakes are applied. Furthermore, issues with the throttle actuator can disrupt the system's ability to adjust the throttle position accurately, impacting overall performance. Lastly, don't overlook potential electrical problems, such as blown fuses or wiring issues, which can significantly disrupt the cruise control's operation. By systematically examining these areas, you can effectively diagnose and potentially resolve the issues affecting your vehicle's cruise control system.

How urgent is it to address the non-functioning cruise control in a 2020 Audi TT Quattro?

When it comes to a non-functioning cruise control in a 2020 Audi TT Quattro, the urgency of addressing the problem cannot be overstated. While it may seem like a minor inconvenience, neglecting this issue can lead to more significant complications down the line. The cruise control system is not just a luxury feature; it plays a crucial role in maintaining a consistent speed, which is especially beneficial during long drives. If the cruise control is malfunctioning, it may signal deeper electronic or sensor-related issues that could compromise the vehicle's overall performance. Moreover, ignoring the problem could pose safety risks, particularly on highways where maintaining a steady speed is essential for safe driving. For those considering a DIY approach, it is vital to recognize that while troubleshooting may save time and money, a thorough inspection by a qualified mechanic is often necessary to accurately diagnose and resolve the underlying issues. Addressing the malfunction promptly ensures not only the functionality of the cruise control but also the safety and reliability of your Audi TT Quattro on the road.

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