2004 Mercedes-Benz CLK55 AMG Cruise Control Isn't Working

Fixing Cruise Control Issues in 2004 Mercedes-Benz CLK55 AMG

Find Repair Location
Reviewed by
Bo Fader
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 2004 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 2004 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 2004 Mercedes-Benz CLK55 AMG?

When troubleshooting the non-functional cruise control in a 2004 Mercedes-Benz CLK55 AMG, start with the simplest solutions before moving on to more complex diagnostics. Begin by inspecting the fuses associated with the cruise control system, as a blown fuse is a common and easily fixable issue. Next, examine the brake pedal and throttle body; any malfunction in these components can disrupt cruise control functionality. If the check engine light is illuminated, it’s crucial to use an OBD2 scan tool to identify any underlying issues that may be affecting the system. Additionally, check the brake pedal switch, as a faulty switch can prevent the cruise control from engaging. Finally, ensure that the brake lights are operational, since problems with the brake light switch or the lights themselves can also interfere with cruise control performance. By systematically addressing these areas, 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 2004 Mercedes-Benz CLK55 AMG?

When dealing with cruise control issues in a 2004 Mercedes-Benz CLK55 AMG, it's essential to understand the various components that could be at fault. A defective component or sensor is often the primary culprit, as these parts are crucial for the cruise control system's operation. Additionally, a failed control module can disrupt the entire system, rendering the cruise control inoperative. It's also important to check for sensor or switch issues, as these can lead to intermittent functionality or complete failure. Lastly, throttle actuation problems may arise, affecting the system's ability to maintain speed. By systematically examining these areas, DIYers can effectively troubleshoot and address the cruise control malfunction, restoring functionality to this convenient feature.

How urgent is it to repair the non-functioning cruise control in a 2004 Mercedes-Benz CLK55 AMG?

When considering the urgency of repairing the non-functioning cruise control in your 2004 Mercedes-Benz CLK55 AMG, it's crucial to recognize the potential safety risks involved. A sudden failure of the cruise control can lead to unexpected vehicle deceleration, which may compromise your control over the car and increase the likelihood of accidents. Common culprits behind cruise control issues include blown fuses, malfunctioning brake lights, and faulty brake switches, all of which can be diagnosed with a simple diagnostic scanner. For those inclined to tackle the repair themselves, it's essential to inspect the cruise control switch, wiring, and related components thoroughly. However, while DIY troubleshooting can help identify the problem, the urgency of the repair should not be underestimated. If the malfunction is linked to critical systems like the throttle control or brake functionality, it is advisable to seek professional assistance to ensure the issue is resolved safely and effectively. Addressing these concerns promptly not only enhances your driving experience but also safeguards your safety on the road.

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.