2019 Audi A5 Sportback Cruise Control Isn't Working

Troubleshooting Common Issues with Cruise Control in Your 2019 Audi A5 Sportback 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 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 2019 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 2019 Audi A5 Sportback?

When diagnosing a cruise control issue in your 2019 Audi A5 Sportback, it's crucial to follow a methodical diagnostic approach that prioritizes simpler checks before delving into more complex solutions. Begin by inspecting the cruise control fuse, as a blown fuse can easily disrupt the system's functionality. Next, examine the cruise control buttons on the steering wheel to ensure they are functioning correctly, since faulty buttons can lead to operational issues. Utilizing an OBD-II scanner to check for error codes is an essential step, as it can help identify specific problems within the cruise control system. Additionally, verify the functionality of the speed sensors, which are critical for maintaining the desired speed. It's also wise to inspect the wiring and connections for any signs of damage or corrosion, as these can significantly affect performance. Finally, test the cruise control module to ensure it is operating as intended. If these initial steps do not resolve the issue, seeking assistance from a professional mechanic or an authorized Audi service center is recommended for a thorough diagnosis and repair. By adhering to this structured approach, you can effectively troubleshoot and potentially resolve the cruise control problem in your vehicle.

What are the common problems that could cause the cruise control to stop working in a 2019 Audi A5 Sportback?

When the cruise control in your 2019 Audi A5 Sportback stops functioning, it can be frustrating, but understanding the common issues can help you diagnose the problem. One frequent culprit is a faulty speed sensor, which is essential for the cruise control system to accurately gauge your vehicle's speed. If this sensor malfunctions, the system may fail to engage or maintain speed. Another common issue is related to the brake light switch; if this switch is defective, it can disrupt the cruise control's operation since the system is designed to disengage when the brake pedal is pressed. Additionally, problems with the throttle control, such as a malfunctioning throttle position sensor, can hinder the cruise control's ability to maintain a steady speed. Electrical issues, including blown fuses or wiring problems, can also affect the cruise control module, leading to operational failures. Lastly, software glitches within the vehicle's onboard computer may require diagnostic testing and reprogramming to restore functionality. By identifying these potential issues, you can take the necessary steps to troubleshoot and potentially fix the cruise control system in your Audi A5 Sportback.

How urgent is it to address the malfunctioning cruise control in my 2019 Audi A5 Sportback?

Addressing the malfunctioning cruise control in your 2019 Audi A5 Sportback is of utmost urgency due to the potential safety risks it poses. A faulty cruise control system can lead to unexpected changes in speed, which may result in dangerous driving conditions and increase the likelihood of accidents. Additionally, neglecting this issue can adversely affect your vehicle's overall performance and fuel efficiency, leading to a less enjoyable driving experience. Furthermore, delaying repairs could exacerbate the problem, resulting in more extensive and costly damage to the cruise control system and related components. Therefore, it is crucial to prioritize the diagnosis and repair of any cruise control malfunctions to ensure your safety on the road and maintain the integrity of your vehicle.

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