2006 Mercedes-Benz CLK350 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2006 Mercedes-Benz CLK350 and How to Fix Them

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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 2006 Mercedes-Benz CLK350 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 2006 Mercedes-Benz CLK350 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 2006 Mercedes-Benz CLK350?

When faced with a non-functional cruise control in your 2006 Mercedes-Benz CLK350, it's crucial to adopt a systematic diagnostic approach. Begin by checking the cruise control fuse located in the fuse box, as a blown fuse is a common and easily fixable issue. Next, inspect the cruise control buttons on the steering wheel for any signs of damage or sticking, as these can hinder the system's operation. It's also important to verify that the vehicle's speed sensors are functioning correctly, since faulty sensors can disrupt the cruise control's ability to engage. Utilizing a diagnostic scanner to check for error codes can provide valuable insights into specific problems affecting the cruise control system. Additionally, examine the brake and clutch switches to ensure they are operating properly, as malfunctioning switches can prevent activation. Lastly, if your cruise control system relies on vacuum pressure, inspect the vacuum lines for any leaks or damage that could impact functionality. By following these steps, you can effectively troubleshoot and potentially resolve the issues with your cruise control system.

What are the common problems that could cause the cruise control to stop working in a 2006 Mercedes-Benz CLK350?

When dealing with cruise control issues in a 2006 Mercedes-Benz CLK350, it's essential to understand the common problems that may be at play. One frequent culprit is a faulty brake light switch, which can prevent the cruise control from engaging since the system is designed to disengage when the brake pedal is pressed. Additionally, a malfunctioning speed sensor can disrupt the system's ability to maintain a constant speed, leading to operational failure. Vacuum leaks within the engine can also hinder cruise control functionality by causing a loss of necessary vacuum pressure. Another potential issue is a defective cruise control module, which may result in the system not responding to commands. Lastly, electrical problems, including wiring issues or blown fuses, can significantly impact the cruise control's operation. For those looking to troubleshoot these issues themselves, it's advisable to start by checking the brake light switch and speed sensor, as these are often the most accessible components to inspect.

How urgent is it to address the non-functioning cruise control in a 2006 Mercedes-Benz CLK350?

When it comes to a non-functioning cruise control in a 2006 Mercedes-Benz CLK350, the urgency of addressing the issue cannot be overstated. While it may not seem like an immediate emergency, neglecting this problem can lead to significant safety risks and potential damage to the vehicle's electrical system or sensors. Cruise control is designed to enhance driving comfort and efficiency, particularly on long journeys, and its failure could indicate deeper underlying issues that, if left unchecked, might escalate into more serious malfunctions. For DIY enthusiasts, it’s crucial to recognize that timely inspection and repair not only restore the convenience of cruise control but also safeguard the overall performance of the vehicle. By addressing the issue promptly, you can prevent further complications and ensure a safer driving experience, especially during extended trips where cruise control is most beneficial. Therefore, taking the initiative to diagnose and resolve the problem is a wise decision that contributes to both vehicle longevity and driver safety.

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Troubleshooting Cruise Control Issues 2006 Mercedes CLK350