2001 Mercedes-Benz CL500 Cruise Control Isn't Working

Fixing Cruise Control Issues in 2001 Mercedes-Benz CL500

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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 2001 Mercedes-Benz CL500 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 2001 Mercedes-Benz CL500 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 2001 Mercedes-Benz CL500?

When faced with a non-functional cruise control in a 2001 Mercedes-Benz CL500, it's crucial to adopt a systematic diagnostic approach. Start by checking the relevant fuses, particularly fuses 56, 57, and 62 located in the front fuse box under the hood, as blown fuses can often be the simplest fix. Next, inspect the brake pedal and throttle body, since any issues here can directly impact cruise control performance. It's also important to test the brake pedal switch; a malfunctioning switch can prevent the cruise control from engaging. Additionally, ensure that the speed sensors on each wheel are operational, as these sensors play a vital role in the cruise control system's functionality. Lastly, rule out any engine or transmission problems, as these can trigger the cruise control to deactivate. By following these steps, you can effectively diagnose and potentially resolve the cruise control issue in your vehicle.

What are the common problems that could cause the cruise control to stop working in a 2001 Mercedes-Benz CL500?

When dealing with a malfunctioning cruise control system in a 2001 Mercedes-Benz CL500, it's essential to understand the common problems that could 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 detect when the brake pedal is pressed. Additionally, issues with the speed sensor can disrupt the system's ability to maintain speed, as it relies on accurate readings to function correctly. Another potential issue is vacuum leaks within the cruise control system, which can significantly impair its operation. Furthermore, a defective cruise control module may also be responsible for the malfunction, as it is the central component that controls the system. Lastly, electrical problems, such as blown fuses or wiring issues, can hinder the cruise control's functionality. By systematically checking these areas, DIYers can effectively troubleshoot and resolve the cruise control issues in their vehicle.

How urgent is it to repair the non-functioning cruise control in a 2001 Mercedes-Benz CL500?

Repairing the non-functioning cruise control in a 2001 Mercedes-Benz CL500 should be considered a priority, even if it may not seem immediately critical. The absence of cruise control can lead to increased driver fatigue, particularly on long journeys, as maintaining a consistent speed becomes more labor-intensive. This fatigue can distract the driver, potentially heightening the risk of accidents. Furthermore, the comfort that cruise control provides is significant; it allows drivers to relax their foot and enjoy a more pleasant driving experience. Beyond safety and comfort, addressing this issue promptly can also protect the vehicle's resale value. Prospective buyers often shy away from vehicles with unresolved mechanical problems, which can diminish the car's appeal and market price. Therefore, while the urgency may not be as pressing as other safety concerns, timely repair of the cruise control system is advisable to enhance driving safety, comfort, and the overall value of your Mercedes-Benz.

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