2017 Audi A3 Quattro Cruise Control Isn't Working

Fixing Cruise Control Issues in Your 2017 Audi A3 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 2017 Audi A3 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 2017 Audi A3 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 are the initial diagnostic steps to troubleshoot the non-functional cruise control in a 2017 Audi A3 Quattro?

When faced with a non-functional cruise control in your 2017 Audi A3 Quattro, it's important to adopt a systematic diagnostic approach. Begin by checking the cruise control fuse located in the fuse box, as a blown fuse is a common and easily fixable issue. Next, inspect the cruise control buttons on the steering wheel to ensure they are operational, as malfunctioning buttons can disrupt the system. It's also crucial to verify the speed sensors, which are integral to cruise control functionality; any faults here can lead to system failure. Utilizing a diagnostic scanner to check for error codes can provide valuable insights into specific problems affecting the cruise control system. Additionally, examine the brake and clutch switches, as these components are designed to disengage cruise control when the pedals are pressed. Lastly, inspect the wiring and connections associated with the cruise control system for any signs of damage or corrosion, as faulty wiring can hinder performance. By following these steps, you can effectively troubleshoot the issue and determine whether further professional assistance is needed.

What are the common problems that could cause the cruise control to stop working in a 2017 Audi A3 Quattro?

When the cruise control in your 2017 Audi A3 Quattro stops functioning, it can be frustrating, but understanding the common problems can help you diagnose the issue effectively. One of the primary culprits is a faulty speed sensor, which is crucial for the cruise control system to accurately gauge your vehicle's speed. If this sensor malfunctions, the system may fail to engage or maintain the desired speed. Additionally, issues with the brake light switch can cause the cruise control to disengage unexpectedly, often without the driver’s intention, leading to sudden interruptions in speed control. Another potential problem is a malfunctioning throttle actuator, which can disrupt communication between the cruise control system and the engine, preventing it from maintaining a constant speed. Electrical problems, such as faulty wiring or blown fuses, can also interfere with the cruise control's operation, making it essential to check the electrical connections. Lastly, vacuum leaks in the system can lead to a loss of pressure, further complicating the cruise control's ability to function properly. By identifying these common issues, you can take the first steps toward troubleshooting and potentially resolving the cruise control problems in your Audi A3 Quattro.

How urgent is it to address the non-functioning cruise control in a 2017 Audi A3 Quattro?

When it comes to the non-functioning cruise control in a 2017 Audi A3 Quattro, understanding the urgency of the situation is crucial for any DIY enthusiast. While this issue may not pose an immediate safety risk like malfunctioning brakes or steering, it is still important to address it promptly. A functioning cruise control system enhances driving comfort, particularly on long trips, by allowing the driver to maintain a consistent speed, which can also contribute to better fuel efficiency. Ignoring this problem could lead to increased driver fatigue during extended highway drives, making it a nuisance rather than a critical safety concern. Moreover, delaying repairs might allow underlying issues to worsen, potentially resulting in more extensive and costly repairs down the line. Therefore, while the urgency may not be as high as with other mechanical failures, taking action sooner rather than later will help ensure the overall performance and reliability of your vehicle.

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