Mercedes-Benz CL600 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your Mercedes-Benz CL600 and How to Fix Them

Find Repair Location
Reviewed by
Aisha
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 Mercedes-Benz CL600 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 Mercedes-Benz CL600 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.

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.

Troubleshooting Cruise Control Issues in a Mercedes-Benz CL600

When troubleshooting cruise control issues in your Mercedes-Benz CL600, start with the simplest potential problems before delving into more complex diagnostics. Begin by checking the brake lights, as a malfunctioning brake light can disrupt the cruise control system. If the brake lights are functioning correctly, inspect the control module, sensor, and switch for any visible signs of wear or damage. Next, examine the throttle actuation system, ensuring that it operates smoothly without any obstructions. If these components appear to be in good condition, turn your attention to the ABS sensors, as a failure in any of these can disable the cruise control along with other critical systems. Additionally, inspect the spiral cable in the steering wheel, as a faulty connection here can prevent the cruise control from engaging. If all these checks do not resolve the issue, consider potential electrical problems, such as loose connectors or damaged wiring, which may require more advanced diagnostic tools. By following this structured approach, you can effectively identify and address the root cause of your cruise control issues, ensuring a smoother driving experience.

What Could Cause the Cruise Control to Malfunction in a Mercedes-Benz CL600?

When addressing cruise control malfunctions in a Mercedes-Benz CL600, it's crucial to recognize the common problems that may be at play. A primary issue often stems from the wheel speed sensors; if these sensors deliver inconsistent readings, the cruise control may fail to operate correctly, particularly at higher speeds. Additionally, a defective brake pedal switch can interfere with the system by mistakenly indicating that the brakes are applied, which disables cruise control functionality. Another potential concern is the ABS wheel speed sensor; a malfunction here can activate warning lights for the Electronic Stability Program (ESP) and Anti-lock Braking System (ABS), signaling a more significant issue. Moreover, the cruise control system itself may contain faulty components, such as the control module or switch, which might necessitate replacement following a thorough diagnosis. Lastly, a malfunctioning cruise control amplifier can also contribute to the problem, and in some instances, swapping it with a compatible part from another model can be a cost-effective remedy. By understanding these common issues, you can effectively diagnose and address the cruise control problems in your vehicle.

Why is the Cruise Control Not Working in a Mercedes-Benz CL600?

When the cruise control in your Mercedes-Benz CL600 is not functioning, it is crucial to address the issue without delay. Ignoring symptoms such as a non-responsive system can lead to more significant problems, including potential safety hazards while driving. For instance, a defective brake pedal switch or a blown fuse can disrupt the cruise control's operation, which may result in unexpected acceleration or deceleration, putting you and others at risk on the road. Additionally, if the ABS wheel speed sensor is faulty, it can trigger warning lights that indicate deeper issues within the vehicle's braking system, further complicating the situation. Problems with the throttle control system can also affect cruise control functionality, leading to erratic vehicle behavior. Therefore, it is essential to have these components inspected and repaired by a qualified technician as soon as possible to ensure your vehicle operates safely and efficiently. Taking prompt action not only enhances your driving experience but also prevents potential damage to your vehicle's systems, ultimately saving you time and money in the long run.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.

Mercedes-Benz CL600 Cruise Control Issues & Repairs