1991 Audi 200 Cruise Control Isn't Working

Diagnosing Common Issues with the Cruise Control System in Your 1991 Audi 200 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 1991 Audi 200 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 1991 Audi 200 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 initial diagnostic steps to troubleshoot the non-functioning cruise control in a 1991 Audi 200?

When troubleshooting the non-functioning cruise control in a 1991 Audi 200, it's essential to adopt a systematic diagnostic approach. Begin by checking the fuse box for any blown fuses related to the cruise control system, as this is a simple and quick fix that can often resolve the issue. Next, inspect the cruise control switch located on the steering wheel to ensure it is operational and free from damage. If these initial checks do not reveal the problem, proceed to examine the cruise control module for any signs of malfunction. Additionally, inspect the vacuum lines connected to the system for leaks or damage, as these can significantly impact functionality. Finally, test the cruise control actuator to confirm it is receiving the correct signals and functioning as intended. By following this methodical approach, you can effectively identify and address the issues affecting your cruise control system.

What are the common problems that could cause the cruise control to stop working in a 1991 Audi 200?

When dealing with a malfunctioning cruise control system in a 1991 Audi 200, it's crucial to understand the common problems that may be at play. One of the primary culprits could be a faulty cruise control switch, which may fail to engage the system properly. Additionally, vacuum leaks within the cruise control system can lead to a loss of pressure, rendering the system ineffective. Another potential issue is a defective speed sensor, which disrupts the communication between the vehicle's speed and the cruise control, causing it to malfunction. It's also important to check for a blown fuse, as this can completely disable the cruise control system. Furthermore, problems with the brake light switch can prevent the cruise control from engaging, as it is designed to disengage when the brakes are applied for safety reasons. Lastly, a malfunctioning throttle cable can interfere with the cruise control's ability to maintain a steady speed. By systematically diagnosing these issues, DIY enthusiasts can effectively troubleshoot and repair the cruise control system in their Audi 200.

How urgent is it to repair the non-functioning cruise control in a 1991 Audi 200?

When contemplating the urgency of repairing the non-functioning cruise control in a 1991 Audi 200, it's essential to weigh the implications of neglecting this feature. While cruise control is primarily a convenience, its malfunction can lead to increased driver fatigue during long trips, potentially compromising safety. If the system's failure is linked to other electrical issues or if it affects the vehicle's overall drivability, addressing the repair becomes more pressing. Additionally, for those who frequently embark on extended journeys, restoring this feature can significantly enhance comfort and reduce stress. Furthermore, maintaining all vehicle functions, including cruise control, is crucial for preserving resale value; a fully operational vehicle is more appealing to potential buyers. Therefore, while it may not be an immediate emergency, considering the safety, comfort, and financial implications can help prioritize the repair of your Audi's cruise control system.

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