2006 Mercedes-Benz SL600 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2006 Mercedes-Benz SL600 and How to Fix Them

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Reviewed by
Devin Cabugcal
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 SL600 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 SL600 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 SL600?

When faced with a non-functional cruise control in your 2006 Mercedes-Benz SL600, it's important to approach the diagnosis methodically. Begin by checking the cruise control fuse, as a blown fuse is a common and easily fixable issue that can halt the system's operation. Next, inspect the cruise control switch located on the steering wheel; a malfunctioning switch may require replacement. It's also crucial to verify the functionality of the vehicle's speed sensors, as these components are integral to the cruise control system's performance. Utilizing a diagnostic scanner can provide valuable insights by revealing any error codes that may indicate specific problems. Additionally, ensure that the brake and clutch switches are operating correctly, as faulty switches can prevent the cruise control from engaging. Finally, take a close look at the wiring and connections associated with the cruise control system, checking for any signs of damage or loose connections that could disrupt 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 SL600?

When the cruise control in your 2006 Mercedes-Benz SL600 ceases to function, it can be frustrating, but understanding the common problems can help you diagnose the issue effectively. One of the primary culprits is a faulty brake light switch, which can prevent the cruise control from engaging if it fails to detect when the brake pedal is pressed. Additionally, issues with the speed sensor can disrupt the system, as it relies on accurate speed readings to maintain control. Another potential problem is vacuum leaks within the cruise control system, which can interfere with its operation. A defective cruise control module may also be responsible for the malfunction, as it is essential for the system's overall functionality. Lastly, electrical problems, such as blown fuses or wiring issues, can significantly impact the cruise control's performance. By systematically checking these components, you can identify and resolve the issues affecting your cruise control system, allowing you to enjoy a smoother driving experience once again.

How urgent is it to address the non-functioning cruise control in a 2006 Mercedes-Benz SL600?

When it comes to the non-functioning cruise control in a 2006 Mercedes-Benz SL600, 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. The cruise control system is not just a convenience; it plays a vital role in maintaining a consistent speed, which is particularly beneficial during long drives. If the cruise control is malfunctioning, it could signal deeper electronic issues or sensor failures that might affect other critical systems in your vehicle. Moreover, ignoring this problem could compromise your safety, especially on highways where maintaining a steady speed is essential. Therefore, it is advisable to diagnose and address the cruise control issue promptly, either through self-diagnosis or by consulting a qualified mechanic, to ensure the overall performance and safety of your SL600 on the road. Taking action now can prevent further complications and enhance your driving experience.

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2006 Mercedes-Benz SL600 Cruise Control Issues & Repairs