2019 Audi S3 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2019 Audi S3 and How to Fix Them

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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 2019 Audi S3 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 S3 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 cruise control issue in my 2019 Audi S3?

When diagnosing the cruise control issue in your 2019 Audi S3, it's essential to adopt a systematic approach that begins with the simplest solutions before progressing to more complex diagnostics. Start by checking the cruise control fuse, as a blown fuse can easily disrupt the system's functionality. Next, inspect the cruise control buttons on the steering wheel to ensure they are operational, as malfunctioning buttons can lead to issues. Utilizing an OBD-II scanner to check for error codes is a crucial step, as it can reveal specific problems within the cruise control system. Additionally, verify that the speed sensors are working correctly, since faulty sensors can hinder the system's ability to maintain speed. It's also important to examine the wiring and connections for any signs of damage or corrosion, as these can interfere with the system's performance. If these steps do not resolve the issue, consulting a professional mechanic or an authorized Audi service center is advisable, as they possess the expertise and tools necessary for diagnosing more complex problems. By following this structured diagnostic approach, you can effectively identify and address the cruise control issue in your Audi S3.

What are the common problems that could cause the cruise control to stop working in a 2019 Audi S3?

When troubleshooting the cruise control system in a 2019 Audi S3, it's essential to understand the common problems that may lead to its failure. One prevalent issue is a faulty speed sensor, which can disrupt the system's ability to accurately gauge the vehicle's speed, preventing it from engaging or maintaining the desired speed. Additionally, problems with the brake light switch can interfere with the cruise control's operation, as this switch is designed to disengage the system when the brake pedal is pressed. If the switch is malfunctioning, it may not properly signal the cruise control to turn off. Another potential culprit is a malfunction in the throttle control system, which includes components like the throttle position sensor and throttle actuator; any issues here can hinder the cruise control's ability to maintain a steady speed. Electrical problems, such as blown fuses or wiring issues, can also impede the cruise control's functionality, as can software glitches within the vehicle's onboard computer system. By identifying and addressing these common issues, DIY enthusiasts can effectively troubleshoot and potentially resolve cruise control problems in their Audi S3.

How urgent is it to address the malfunctioning cruise control in a 2019 Audi S3?

Addressing a malfunctioning cruise control in a 2019 Audi S3 is of utmost importance due to the potential safety risks and performance implications it presents. When cruise control fails, it can lead to unexpected acceleration or deceleration, which not only compromises the safety of the driver and passengers but also poses a danger to other road users. Furthermore, neglecting these symptoms can exacerbate the problem, leading to more extensive damage to the vehicle's systems and resulting in costly repairs down the line. The convenience and comfort that cruise control offers are significantly diminished when the system is not functioning correctly, detracting from the overall driving experience. Therefore, it is crucial to prioritize the diagnosis and repair of any cruise control issues promptly, ensuring the vehicle operates safely and efficiently while maintaining its integrity.

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