2020 Audi A5 Sportback Cruise Control Isn't Working

Troubleshooting Common Issues with Cruise Control in Your 2020 Audi A5 Sportback and How to Fix Them

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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 2020 Audi A5 Sportback 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 A5 Sportback 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 2020 Audi A5 Sportback?

To effectively diagnose the cruise control issue in your 2020 Audi A5 Sportback, begin with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by examining the cruise control fuse, as a blown fuse can easily disrupt functionality. Next, inspect the cruise control buttons on the steering wheel for any signs of damage or wear that could hinder their operation. Utilizing an OBD-II scanner to check for error codes is a crucial step, as these codes can pinpoint specific problems within the system. Following this, verify the functionality of the speed sensors, which are essential for the cruise control to operate correctly. It’s also important to inspect all wiring connections related to the cruise control system, ensuring they are secure and free from corrosion. If these preliminary checks do not reveal the issue, proceed to test the cruise control module to confirm it is sending and receiving signals properly. Should you find that the problem persists despite these efforts, consulting a professional mechanic or an authorized Audi service center is advisable for a thorough diagnosis and resolution. This structured approach not only helps in identifying the issue efficiently but also saves time and resources in the troubleshooting process.

What are the common problems that could cause the cruise control to stop working in a 2020 Audi A5 Sportback?

When dealing with cruise control issues in a 2020 Audi A5 Sportback, it's essential to understand the common problems that may arise. A faulty cruise control switch is often the first suspect, as it can hinder the system's ability to engage or disengage properly. Additionally, a malfunctioning speed sensor can disrupt the system's capacity to maintain a set speed, leading to erratic behavior. Another critical component is the brake light switch; if this switch fails, it may cause the cruise control to disengage unexpectedly when the brakes are applied, which can be both frustrating and dangerous. Furthermore, the throttle actuator plays a vital role in adjusting the vehicle's speed, and any failure here can significantly impact cruise control functionality. Lastly, don't overlook potential electrical problems, such as blown fuses or wiring issues, which can also disrupt the cruise control system. By identifying and addressing these common issues, you can effectively troubleshoot and restore the cruise control functionality in your Audi A5 Sportback.

How urgent is it to address the malfunctioning cruise control in my 2020 Audi A5 Sportback?

Addressing a malfunctioning cruise control in your 2020 Audi A5 Sportback is of utmost urgency due to the significant safety risks it poses. A faulty system can lead to unexpected acceleration or deceleration, increasing the likelihood of accidents and jeopardizing your safety on the road. Moreover, neglecting this issue can adversely affect your vehicle's overall performance, potentially leading to more extensive and costly repairs down the line. Timely intervention not only ensures that your car operates smoothly but also helps maintain its resale value, as prospective buyers are likely to be wary of vehicles with unresolved mechanical issues. Additionally, resolving the cruise control malfunction promptly provides peace of mind, allowing you to drive confidently, knowing that your vehicle is reliable and safe. Therefore, it is crucial to prioritize the repair of your cruise control system to safeguard your well-being and the integrity of your Audi A5 Sportback.

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2020 Audi A5 Sportback Cruise Control Issues & Repairs