2019 Audi A4 Quattro Cruise Control Isn't Working

Fixing Cruise Control Issues in Your 2019 Audi A4 Quattro

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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 2019 Audi A4 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 2019 Audi A4 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-functioning cruise control in a 2019 Audi A4 Quattro?

When troubleshooting the non-functioning cruise control in your 2019 Audi A4 Quattro, start with the simplest checks to avoid unnecessary complications. Begin by inspecting the cruise control fuse; a blown or damaged fuse can easily disrupt the system's operation. Next, examine the cruise control switch located on the steering wheel for any signs of wear or damage, as this could prevent the system from engaging. Ensure that the cruise control feature is enabled in your vehicle's settings, as it may have been inadvertently turned off. Additionally, check the vehicle's speed sensors, which are crucial for the cruise control to function correctly; any malfunction here can lead to issues. Utilizing an onboard diagnostic scanner can help you identify any error codes that may indicate specific problems within the cruise control system. Finally, inspect the wiring connections related to the cruise control for any loose or damaged wires, as these can also hinder performance. By systematically following these steps, you can effectively diagnose and potentially resolve the issues affecting your cruise control system.

What are the common problems that could cause the cruise control to stop working in a 2019 Audi A4 Quattro?

When troubleshooting cruise control issues in a 2019 Audi A4 Quattro, it's essential to understand the common problems that may lead to its malfunction. One of the primary culprits is a faulty speed sensor, which can disrupt the system's ability to maintain the desired speed. Additionally, the brake light switch plays a crucial role; if it fails, the cruise control may disengage unexpectedly when the brakes are applied. Throttle-related issues, such as a malfunctioning throttle position sensor or throttle body, can also hinder cruise control functionality. Electrical problems, including faulty wiring or blown fuses, may further complicate the situation. Lastly, vacuum leaks in the engine can impact the cruise control system's performance, as it relies on vacuum pressure to operate effectively. If you encounter cruise control problems, it's advisable to conduct a thorough inspection or consult a qualified mechanic to accurately diagnose and resolve the issue.

How urgent is it to address the malfunctioning cruise control in a 2019 Audi A4 Quattro?

When it comes to a malfunctioning cruise control system in your 2019 Audi A4 Quattro, the urgency of addressing the issue cannot be overstated. A faulty cruise control can lead to unpredictable vehicle behavior, such as sudden acceleration or deceleration, which poses a significant safety risk not only to you but also to other road users. Moreover, neglecting this problem can detract from your overall driving experience, making it less convenient and enjoyable. Beyond immediate safety concerns, a malfunctioning system can also negatively impact fuel efficiency and may lead to further damage to your vehicle's components if left unresolved. By addressing the cruise control issue promptly, you not only enhance your safety but also prevent the potential for more extensive and costly repairs in the future. Therefore, it is crucial to take action as soon as you notice any symptoms of malfunction to ensure your Audi A4 Quattro remains in optimal working condition.

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2019 Audi A4 Quattro Cruise Control Issues & Repairs