2002 Mercedes-Benz CL500 Cruise Control Isn't Working

Fixing Cruise Control Issues in 2002 Mercedes-Benz CL500

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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 2002 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 2002 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 2002 Mercedes-Benz CL500?

When troubleshooting the non-functional cruise control in a 2002 Mercedes-Benz CL500, start with the simplest checks to avoid unnecessary complexity. Begin by inspecting the fuses related to the cruise control system, as a blown fuse can often be the culprit behind the malfunction. Locate the fuse box in the engine bay, which is detailed in your vehicle's manual, and carefully examine the fuse dedicated to the cruise control. If the fuses are intact, turn your attention to the brake pedal and throttle body, as issues with these components can directly affect cruise control functionality. Ensure that the brake pedal is not sticking and that the throttle body is clean and operating smoothly. By systematically addressing these areas, you can effectively diagnose and potentially resolve the issue with your cruise control system.

What are the common problems that could cause the cruise control to stop working in a 2002 Mercedes-Benz CL500?

When dealing with a malfunctioning cruise control system in a 2002 Mercedes-Benz CL500, it's essential to understand the common problems that could be at play. One of the first areas to check is the brake light switch, as a faulty switch can prevent the cruise control from engaging by failing to signal when the brake pedal is pressed. Additionally, the cruise control module itself may be defective, which can lead to a complete failure of the system. Another critical aspect to consider is the presence of vacuum leaks in the engine, as these can disrupt the cruise control's ability to maintain speed. Furthermore, a defective speed sensor can hinder the system's capacity to regulate speed accurately, resulting in erratic behavior. Lastly, electrical issues, such as blown fuses or damaged wiring, can also contribute to the cruise control's malfunction. By systematically examining these components, DIYers can identify and potentially rectify the issues affecting their vehicle's cruise control system.

How urgent is it to repair the non-functioning cruise control in a 2002 Mercedes-Benz CL500?

When considering the urgency of repairing the non-functioning cruise control in a 2002 Mercedes-Benz CL500, it is crucial to recognize the implications of delaying such repairs. While it may not seem like an immediate emergency, a malfunctioning cruise control system can lead to increased driver fatigue during long trips, compromising both comfort and safety. The convenience of cruise control allows drivers to maintain a steady speed without constant pedal pressure, which is particularly beneficial on highways. Ignoring this issue could result in more significant problems down the line, such as potential safety hazards stemming from erratic vehicle behavior or the failure of related systems. Additionally, the root causes of cruise control malfunctions—ranging from faulty sensors to blown fuses—can escalate if not addressed promptly, leading to more extensive and costly repairs. Therefore, it is advisable to consult a qualified technician to diagnose the issue and ensure that your vehicle remains safe and enjoyable to drive. Taking action sooner rather than later can prevent inconveniences and enhance your overall driving experience.

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2002 Mercedes-Benz CL500 Cruise Control Issues & Repairs