2008 Mercedes-Benz SL600 Cruise Control Isn't Working

Fixing Cruise Control Issues in 2008 Mercedes-Benz SL600

Find Repair Location
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 2008 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 2008 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 2008 Mercedes-Benz SL600?

When faced with a non-functional cruise control in your 2008 Mercedes-Benz SL600, it's crucial to adopt a systematic diagnostic approach. Start by checking the cruise control fuse in the fuse box; a blown fuse is often the simplest issue to resolve. Next, examine the cruise control switch located on the steering wheel to ensure it is operational and free from damage. Following this, verify the speed sensors, as they play a vital role in relaying accurate speed information to the cruise control system. Inspect the wiring for any loose connections or visible damage that could disrupt functionality. Additionally, test the brake pedal switch, since a malfunction here can prevent the cruise control from engaging. Finally, consider using a diagnostic tool to scan for error codes, which can provide insights into any underlying problems. By methodically working through these steps, you can effectively diagnose and potentially resolve the cruise control issue on your own.

What are the common problems that could cause the cruise control to stop working in a 2008 Mercedes-Benz SL600?

When the cruise control in a 2008 Mercedes-Benz SL600 malfunctions, several common problems may be at play. One of the primary culprits could be a failed control module, sensor, or switch, which are essential for the system's operation. Additionally, a blown fuse or a defective brake pedal switch can interrupt the cruise control functionality, as these components are critical for ensuring that the system disengages when the brakes are applied. Another potential issue is a faulty brake light or a malfunctioning brake switch, which can also prevent the cruise control from engaging properly. Lastly, intermittent operation may arise from problems with the throttle body or brake pedal, leading to inconsistent performance. For those looking to diagnose these issues themselves, it is crucial to check these components systematically, as addressing these common failure modes can often restore the cruise control functionality without the need for professional intervention.

How urgent is it to address the non-functioning cruise control in a 2008 Mercedes-Benz SL600?

When it comes to the non-functioning cruise control in a 2008 Mercedes-Benz SL600, the urgency of addressing this issue cannot be overstated. While it may not seem like an immediate emergency, neglecting this malfunction can lead to significant safety risks on the road. Cruise control is designed to help maintain a steady speed, which is particularly important during long drives on highways. Without this feature, drivers may struggle to keep a consistent pace, increasing the likelihood of accidents due to speed fluctuations. Furthermore, a malfunctioning cruise control system could indicate deeper mechanical problems within the vehicle, which, if left unaddressed, could escalate into more serious and costly repairs. Therefore, it is crucial to prioritize the repair of the cruise control system not only for the sake of comfort and convenience but also to ensure the overall safety and reliability of your vehicle. Taking prompt action can help prevent further complications and enhance your driving experience.

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.

2008 Mercedes-Benz SL600 Cruise Control Issues & Repairs