2016 Audi S4 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2016 Audi S4 and How to Fix Them

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Reviewed by
Andrew Hajjar
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 2016 Audi S4 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 2016 Audi S4 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 steps to diagnose the cruise control issue in a 2016 Audi S4?

To diagnose a cruise control issue in your 2016 Audi S4, start with the basics by checking the cruise control fuse in the fuse box, as a blown fuse can often be the simplest explanation for malfunction. Next, inspect the cruise control buttons on the steering wheel to ensure they are not stuck or damaged, as this can prevent proper engagement. Utilizing an OBD-II scanner to check for error codes can provide insight into any underlying electronic issues. Pay attention to the speed sensors, as they are critical for cruise control functionality; ensure they are operating correctly. Additionally, examine the brake and clutch switches, since faulty switches can inhibit the system from engaging. If these components check out, proceed to test the cruise control module to confirm it is sending the correct signals. Finally, inspect all wiring and connections related to the cruise control system for any signs of damage or corrosion. If you have followed these steps and the issue persists, it may be time to consult a professional mechanic or an Audi dealership for further assistance. This methodical approach not only helps in identifying the problem but also empowers you to tackle the issue with confidence.

What are the common problems that could cause the cruise control to stop working in a 2016 Audi S4?

When troubleshooting the cruise control system in a 2016 Audi S4, it's essential to understand the common problems that may lead to its failure. One of the primary culprits is a faulty brake light switch, which can prevent the system from engaging if it fails to detect when the brake pedal is pressed. Additionally, issues with the speed sensor can disrupt the system's ability to maintain a constant speed, causing it to malfunction. Another potential problem is a malfunctioning throttle actuator, which affects the cruise control's ability to adjust the throttle position accurately. Electrical problems, such as blown fuses or wiring issues, can also impede the cruise control's operation. Lastly, software glitches or issues with the control module may interfere with the system's functionality. By identifying and addressing these common issues, you can effectively troubleshoot and restore the cruise control system in your Audi S4.

How urgent is it to address the malfunctioning cruise control in a 2016 Audi S4?

Addressing a malfunctioning cruise control system in a 2016 Audi S4 is of utmost importance due to the potential safety hazards it presents. A malfunction can lead to unexpected acceleration or deceleration, which not only compromises your safety but also that of other road users. Furthermore, neglecting these symptoms can exacerbate the problem, potentially causing damage to other vehicle components and resulting in more expensive repairs down the line. The convenience and enjoyment of driving are significantly diminished when cruise control is not functioning properly, making it essential to resolve these issues promptly. By prioritizing the diagnosis and repair of your cruise control system, you ensure not only your safety but also the optimal performance of your vehicle, allowing for a smoother and more reliable driving experience.

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Troubleshooting 2016 Audi S4 Cruise Control Issues