2020 Audi Q5 PHEV Cruise Control Isn't Working

Troubleshooting Common Issues with Cruise Control in Your 2020 Audi Q5 PHEV 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 2020 Audi Q5 PHEV cruise control isn't working are failed control module, sensor or switch issues, or throttle actuation problems.
  • Sensor: A faulty sensor can lead to incorrect readings, causing issues with engine performance or triggering warning lights on the dashboard.
  • Control Module: A faulty control module can result in 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 acceleration and poor engine 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 Q5 PHEV 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 Q5 PHEV?

To effectively diagnose the cruise control issue in your 2020 Audi Q5 PHEV, start with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Begin by inspecting the control module, throttle, and associated sensors, as these components are often the primary culprits behind cruise control malfunctions. Next, utilize a diagnostic scanner to identify any error codes that may provide insight into the underlying issues. It’s also essential to check the fuses related to the cruise control system, as a blown fuse can disrupt functionality. Additionally, examine the cruise control buttons and lever for any signs of wear or damage, as even minor faults can prevent the system from engaging. If the buttons are integrated into the steering wheel, consider the possibility of a faulty clock spring, which could also be affecting the cruise control operation. By following this structured diagnostic approach, you can efficiently pinpoint the issue and take the necessary steps to restore your vehicle's cruise control functionality.

What common issues cause cruise control failure in a 2020 Audi Q5 PHEV?

When diagnosing cruise control failure in a 2020 Audi Q5 PHEV, it's crucial to understand the common problems that may arise. One of the primary issues is a malfunctioning control module, which can disrupt the communication between various components of the cruise control system. Additionally, sensor failures, particularly those related to speed or throttle position, can prevent the system from engaging properly. Another frequent culprit is the throttle actuation mechanism; if it fails to respond correctly, the cruise control may not function as intended. Drivers may notice warning messages on the dashboard, such as "speed control system unavailable" or "drive system malfunction: contact service," indicating that immediate attention is needed. By being aware of these potential issues, DIY enthusiasts can take the first steps toward troubleshooting and resolving cruise control problems effectively.

How urgent is it to address the malfunctioning cruise control in my 2020 Audi Q5 PHEV?

Addressing a malfunctioning cruise control in your 2020 Audi Q5 PHEV is crucial for both safety and driving comfort. When cruise control fails, it can lead to inconsistent speed management, which not only increases driver fatigue but also poses a significant safety risk, especially during long highway drives. Common causes of cruise control issues include blown fuses, faulty brake switches, and problems with the throttle control system. Ignoring these symptoms can lead to more severe complications, such as engine-related issues or even complete system failure, which could result in dangerous driving conditions. Therefore, it is essential to prioritize the repair of your cruise control system to ensure a smooth and safe driving experience, as well as to maintain optimal fuel efficiency. Taking prompt action not only enhances your vehicle's performance but also safeguards your well-being on the road.

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