2005 Mercedes-Benz CLK55 AMG Cruise Control Isn't Working

Fixing Cruise Control Issues in 2005 Mercedes-Benz CLK55 AMG

Find Repair Location
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 2005 Mercedes-Benz CLK55 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 2005 Mercedes-Benz CLK55 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.

What are the initial diagnostic steps to troubleshoot the non-functional cruise control in a 2005 Mercedes-Benz CLK55 AMG?

When troubleshooting the non-functional cruise control in a 2005 Mercedes-Benz CLK55 AMG, it's essential to adopt a systematic diagnostic approach. Start by checking the cruise control fuse in the fuse box, as a blown fuse is a straightforward fix that can often resolve the issue. Next, verify the functionality of the cruise control switch located on the steering wheel; if it's not responding, it may need replacement. The brake pedal switch is another critical component to inspect, as it must be functioning correctly to prevent the cruise control from engaging when the brake is applied. Utilizing a diagnostic scanner can provide insights into any error codes that may indicate specific problems within the cruise control system. Additionally, ensure that the vehicle speed sensor is operational, as it is vital for the cruise control's performance. Finally, examine the wiring and connections associated with the cruise control system for any signs of damage or corrosion. By following these steps, you can effectively identify and address the root cause of the cruise control malfunction, empowering you to make the necessary repairs.

What are the common problems that could cause the cruise control to stop working in a 2005 Mercedes-Benz CLK55 AMG?

When the cruise control in your 2005 Mercedes-Benz CLK55 AMG ceases to function, it can be frustrating, but understanding the common issues can guide you in diagnosing the problem. One frequent culprit is a faulty brake light switch, which may fail to signal the cruise control system when the brake pedal is pressed, thereby preventing engagement. Additionally, issues with the speed sensor can disrupt the system's ability to maintain a constant speed, leading to malfunction. Vacuum leaks are another concern, as they can interfere with the cruise control's operation by affecting the pressure needed for proper functionality. Furthermore, a defective cruise control module can be responsible for the system's failure, as it is the central component that controls the cruise functions. Lastly, electrical problems, such as blown fuses or damaged wiring, can also hinder the cruise control's performance. By systematically checking these areas, you can identify and address the issue, restoring your vehicle's cruise control functionality.

How urgent is it to address the non-functioning cruise control in a 2005 Mercedes-Benz CLK55 AMG?

When it comes to the non-functioning cruise control in a 2005 Mercedes-Benz CLK55 AMG, understanding the urgency of the situation is crucial for any DIY enthusiast. While the immediate safety risks may not be as pronounced as with other critical vehicle systems, neglecting this issue can lead to inconveniences during long drives and may affect the overall driving experience. The cruise control system is designed to enhance comfort and efficiency, allowing drivers to maintain a steady speed without constant manual adjustments. If left unaddressed, the malfunction could potentially escalate, leading to more complex repairs that could impact other vehicle systems. Therefore, it is advisable to inspect and repair the cruise control system promptly. This proactive approach not only ensures a smoother driving experience but also helps maintain the vehicle's performance and resale value, making it a worthwhile endeavor for any DIY mechanic.

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.