1995 Mercedes-Benz S500 Cruise Control Isn't Working

Fixing Cruise Control Issues in 1995 Mercedes-Benz S500

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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 1995 Mercedes-Benz S500 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 Mercedes-Benz S500 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 are the initial diagnostic steps to troubleshoot the non-functional cruise control in a 1995 Mercedes-Benz S500?

When troubleshooting the non-functional cruise control in a 1995 Mercedes-Benz S500, it's essential to adopt a systematic diagnostic approach. Start by checking the fuse box for any blown fuses related to the cruise control system, as this is a simple fix that can often resolve the issue. Next, inspect the cruise control switch located on the steering wheel to ensure it is operational; a malfunctioning switch can prevent the system from engaging. It's also crucial to verify the brake pedal switch, as this component is designed to disengage the cruise control when the brake is applied. If the switch is stuck or faulty, it may be the reason for the cruise control not functioning. Additionally, examine the throttle linkage and cables for any signs of damage or obstruction, as these parts are vital for maintaining speed when cruise control is active. Finally, consider scanning the vehicle's onboard computer for error codes, which can provide insights into more complex issues that may not be immediately visible. By following these steps, you can effectively diagnose and potentially resolve the cruise control problem in your Mercedes-Benz S500.

What are the common problems that could cause the cruise control to stop working in a 1995 Mercedes-Benz S500?

When dealing with a malfunctioning cruise control system in a 1995 Mercedes-Benz S500, it's essential to understand the common problems that may be at play. One of the primary culprits is a faulty brake light switch, which can prevent the cruise control from engaging if it fails to signal that the brake pedal has been pressed. Additionally, vacuum leaks within the system can disrupt the cruise control's ability to maintain a steady speed, leading to inconsistent performance. Another potential issue is a defective cruise control module, which can render the entire system inoperative. Speed sensor problems can also arise, causing inaccuracies in speed readings that directly affect cruise control functionality. Lastly, electrical issues, such as blown fuses or damaged wiring, can impede the system's operation. By understanding these common problems, DIYers can effectively troubleshoot and potentially resolve the cruise control issues in their vehicle.

How urgent is it to repair the non-functioning cruise control in a 1995 Mercedes-Benz S500?

When assessing the urgency of repairing the non-functioning cruise control in your 1995 Mercedes-Benz S500, it's essential to weigh your driving habits against the benefits of this feature. While cruise control enhances comfort and can improve fuel efficiency during long drives, it is not a critical safety component like brakes or airbags. If you frequently embark on highway journeys where maintaining a steady speed is advantageous, addressing the repair sooner may significantly enhance your driving experience. Conversely, if your driving primarily consists of short trips or stop-and-go traffic, you might find that the urgency to repair is less pressing. However, neglecting the issue could lead to further complications, especially if the underlying cause of the malfunction is related to other systems in the vehicle. Ultimately, the decision to repair should align with how much you rely on cruise control, balancing convenience with the potential for more significant issues down the line.

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1995 Mercedes-Benz S500 Cruise Control Issues & Repairs