2016 Audi Q3 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2016 Audi Q3 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 2016 Audi Q3 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 Q3 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.

When the vehicle speed sensor fails or the wiring harness prevents signal transmission, the speedometer is the first thing that will stop functioning properly. This can be an intermittent issue where the speedometer only works occasionally, the speedometer may cease all function, or the speedometer may read erratically or incorrectly. Also, the traction control and anti lock brake warning lights specific to each vehicle may be illuminated, depending on the design of those systems. You may notice the vehicle hesitate to accelerate, cruise control will not function properly, and the vehicle may not shift properly through all of the gears.

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 Q3?

To effectively diagnose a cruise control issue in your 2016 Audi Q3, begin with the simplest solutions before moving on to more intricate assessments. Start by checking the cruise control fuse in the fuse box, as a blown fuse is a common culprit for malfunction. Next, inspect the cruise control buttons on the steering wheel to ensure they are operational, as faulty buttons can disrupt functionality. If these initial checks do not resolve the issue, utilize an OBD-II scanner to scan for any error codes that may indicate specific problems within the cruise control system. Following this, examine the speed sensors on the wheels, as malfunctioning sensors can prevent the cruise control from engaging properly. Additionally, test the brake pedal switch, which is designed to disengage the cruise control when pressed; a faulty switch can lead to unexpected disengagement. Finally, inspect the wiring and connections associated with the cruise control system for any signs of damage or corrosion, as these can create connectivity issues. By following this structured diagnostic approach, you can efficiently identify and address the root cause of your cruise control problems.

What are the common problems that could cause the cruise control to stop working in a 2016 Audi Q3?

When the cruise control in a 2016 Audi Q3 ceases to function, several common problems may be at play. One of the primary culprits is a faulty brake light switch, which can prevent the system from engaging if it fails to detect brake pedal activity. Additionally, issues with the speed sensor can disrupt the cruise control's ability to maintain a steady speed, leading to operational failures. Another potential problem is a malfunctioning throttle actuator, which is crucial for regulating speed; if it doesn't work correctly, the cruise control may struggle to perform its intended function. Electrical problems, such as blown fuses or wiring issues, can also interfere with the cruise control system, causing it to stop working altogether. Lastly, software glitches within the vehicle's control module can lead to erratic behavior of the cruise control system. By identifying and addressing these common issues, DIYers can effectively troubleshoot and restore the cruise control functionality in their Audi Q3.

How urgent is it to address the malfunctioning cruise control in a 2016 Audi Q3?

Addressing a malfunctioning cruise control in a 2016 Audi Q3 is of utmost importance due to the safety risks it poses. A faulty system can lead to unexpected acceleration or deceleration, creating hazardous driving conditions, especially on highways where maintaining a steady speed is crucial. Additionally, the convenience of cruise control is often taken for granted during long trips; its malfunction can significantly detract from the overall driving experience, making journeys more stressful and less enjoyable. Furthermore, neglecting these symptoms can lead to more severe issues within the vehicle's systems, potentially resulting in costly repairs down the line. Therefore, it is essential to prioritize the repair of cruise control problems to ensure both safety and the longevity of your vehicle.

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2016 Audi Q3 Cruise Control Malfunctions & Fixes | RepairPal