2008 Mercedes-Benz CL63 AMG Cruise Control Isn't Working

Fixing Cruise Control Issues in 2008 Mercedes-Benz CL63 AMG

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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 2008 Mercedes-Benz CL63 AMG 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 2008 Mercedes-Benz CL63 AMG 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.

What are the steps to diagnose the non-functioning cruise control in a 2008 Mercedes-Benz CL63 AMG?

To effectively diagnose the non-functioning cruise control in your 2008 Mercedes-Benz CL63 AMG, start with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Begin by inspecting the cruise control fuse located in the vehicle's fuse box, as a blown fuse can often be the simplest explanation for the issue. Next, examine the cruise control buttons on the steering wheel to ensure they are not stuck or damaged, as this can directly affect functionality. Utilizing a diagnostic scanner to check for error codes related to the cruise control system is a crucial step, as it can reveal underlying electronic issues. Additionally, inspect the speed sensors on the wheels, ensuring they are clean and operational, since these sensors play a vital role in the cruise control's performance. The brake pedal switch should also be tested, as a malfunction here can prevent the cruise control from engaging. Finally, take a close look at the wiring and connections associated with the cruise control system for any signs of damage or corrosion. If these steps do not resolve the issue, consulting a professional mechanic or an authorized Mercedes-Benz service center is advisable for further diagnosis and repair. By following this structured approach, you can efficiently identify the root cause of the cruise control malfunction.

What are the common problems that could cause the cruise control to stop working in a 2008 Mercedes-Benz CL63 AMG?

When the cruise control in a 2008 Mercedes-Benz CL63 AMG ceases to function, it can be frustrating, but understanding the common problems can guide you in troubleshooting the issue. One of the primary culprits is a faulty brake light switch, which is crucial for the cruise control system as it disengages the system when the brake pedal is pressed. If this switch is malfunctioning, it may prevent the cruise control from engaging altogether. Another potential issue could be related to the speed sensor; if this component is not accurately relaying the vehicle's speed, the cruise control will struggle to maintain a constant speed. Additionally, vacuum leaks within the system can disrupt the necessary pressure for the cruise control to operate effectively. A defective cruise control module may also be at fault, as it is responsible for controlling the system's functions. Lastly, electrical problems, such as blown fuses or damaged wiring, can significantly impact the cruise control's performance. By identifying these common issues, you can take the first steps toward diagnosing and repairing the cruise control system in your vehicle.

How urgent is it to address the non-functioning cruise control in a 2008 Mercedes-Benz CL63 AMG?

When it comes to the non-functioning cruise control in a 2008 Mercedes-Benz CL63 AMG, understanding the urgency of the situation is crucial for any DIY enthusiast. While it may not seem like an immediate emergency, neglecting this issue can lead to more significant problems down the line. A malfunctioning cruise control system not only diminishes the convenience of long drives but may also signal underlying issues within the vehicle's electronic systems that could compromise overall safety and performance. For instance, if the cruise control failure is linked to a malfunctioning throttle or brake system, it could pose serious risks while driving. Therefore, it is advisable to conduct a thorough inspection of the cruise control system as soon as possible. This proactive approach not only helps maintain the vehicle's functionality but also ensures a safer driving experience. If you're comfortable with DIY repairs, start by checking the fuses and connections related to the cruise control system, but be prepared to consult a professional if the problem persists, as they can provide a comprehensive diagnosis and repair.

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Diagnose Cruise Control Issues 2008 Mercedes-Benz CL63 AMG