1995 Audi A6 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 1995 Audi A6 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 1995 Audi A6 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 1995 Audi A6 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 throttle position sensor fails, the engine's computer tends to overcompensate with fuel, leading black exhaust coming from the tailpipe. There is a strong possibility of engine misfires, and the check engine light will come on.

Throttle position sensors can also develop "dead spots," or certain places along the throttle curve where it doesn't get a reading. When this happens, the above symptoms can occur but then stop when you further press or let off the gas pedal.

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.

A faulty cruise control module will simply result in deactivation of cruise control settings. This is because a detected error in the cruise control system could lead to hazardous driving conditions, so the module will be disabled, and the cruise control system warning light will be displayed. This will be a different message depending on make and model, and a warning light or message may be displayed on the driver instrument cluster.

What are the initial steps to diagnose the non-functional cruise control in a 1995 Audi A6?

When diagnosing the non-functional cruise control in a 1995 Audi A6, it's essential to adopt a methodical approach that starts with the most straightforward solutions. Begin by checking the fuse associated with the cruise control system, as a blown fuse can often be the culprit behind electrical issues. Next, inspect the cruise control buttons on the steering wheel to ensure they are not stuck or damaged, as this can prevent the system from engaging. The brake pedal switch is another critical component to examine; since the cruise control disengages when the brake is pressed, a malfunctioning switch could be the reason for the system's failure. Additionally, look for any vacuum leaks in the lines connected to the cruise control, as these can significantly impact its operation. Finally, using a diagnostic scanner to check for error codes can provide valuable insights into any underlying issues. By following these steps, you can effectively narrow down the potential causes of the cruise control malfunction and take the necessary actions to restore its functionality.

What are the common problems that could cause the cruise control to stop working in a 1995 Audi A6?

When dealing with cruise control issues in a 1995 Audi A6, it's essential to understand the common problems that may be at play. One frequent culprit is a faulty cruise control switch, which can hinder the system's ability to engage or disengage properly. Additionally, a defective cruise control module can disrupt communication between the switch and the engine, leading to operational failures. Vacuum leaks within the cruise control system can also significantly affect its performance, preventing it from maintaining speed effectively. Another potential issue is a faulty speed sensor, which is crucial for the system to accurately gauge the vehicle's speed; if this sensor malfunctions, the cruise control may not work at all. Lastly, problems with the brake light switch can interfere with the cruise control's disengagement process when the brakes are applied, causing further complications. By identifying these common issues, DIYers can better diagnose and address the problems affecting their cruise control system, potentially saving time and money on repairs.

How urgent is it to address the non-functioning cruise control in a 1995 Audi A6 to ensure safe driving?

When it comes to the non-functioning cruise control in a 1995 Audi A6, understanding the urgency of the situation is crucial for maintaining vehicle safety and performance. While cruise control is not a critical feature for safe driving, its malfunction could signal underlying electrical issues that may affect other systems in the car. Ignoring this problem could lead to more significant repairs down the line, potentially compromising the vehicle's overall functionality. Moreover, a properly functioning cruise control system enhances driving comfort and fuel efficiency, especially during long trips. Therefore, while it may not pose an immediate safety risk, addressing the malfunction promptly is advisable to prevent further complications and ensure that all vehicle systems operate optimally. Consulting a qualified mechanic for a thorough inspection and repair can help diagnose the root cause of the issue, safeguarding against any potential risks on the road.

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