2006 Mercedes-Benz S500 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2006 Mercedes-Benz S500 and How to Fix Them

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 2006 Mercedes-Benz S500 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 S500 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-functioning cruise control in a 2006 Mercedes-Benz S500?

When troubleshooting the non-functioning cruise control in a 2006 Mercedes-Benz S500, it's essential to adopt a systematic diagnostic approach. Begin by checking the cruise control fuse, as a blown fuse is a straightforward issue that can easily disrupt the system. Next, inspect the cruise control switch located on the steering wheel; ensuring it operates correctly is crucial since a malfunctioning switch can prevent engagement. Additionally, verify that the brake lights are functioning properly, as a faulty brake light switch can inadvertently disable the cruise control. It's also important to examine the vehicle's speed sensors, as any faults here can directly affect the cruise control's performance. Finally, scanning the vehicle's onboard computer for error codes can provide deeper insights into potential issues, guiding you toward a more accurate diagnosis. By following these steps, you can effectively narrow down the causes of the cruise control malfunction and take appropriate action to resolve the issue.

What are the common problems that could cause the cruise control to stop working in a 2006 Mercedes-Benz S500?

When troubleshooting the cruise control system in a 2006 Mercedes-Benz S500, it's crucial to recognize the common problems that may lead to its failure. A faulty brake light switch is often a primary issue, as it can prevent the system from engaging if it fails to detect when the brake pedal is pressed. Additionally, problems with the speed sensor can disrupt the cruise control's ability to maintain speed, since it relies on accurate readings to function correctly. Vacuum leaks within the cruise control system can also interfere with its operation, leading to malfunctions. Furthermore, a defective cruise control module may be responsible for the issue, as it plays a vital role in the system's overall functionality. Lastly, electrical problems, such as blown fuses or wiring issues, can significantly impact the cruise control's performance. By identifying and addressing these common problems, you can effectively troubleshoot and restore the cruise control system in your vehicle, ensuring a smoother driving experience.

How urgent is it to address the non-functioning cruise control in a 2006 Mercedes-Benz S500?

Addressing the non-functioning cruise control in a 2006 Mercedes-Benz S500 is urgent due to the potential safety risks and driving inconveniences it presents. When cruise control fails, it can lead to increased driver fatigue, especially during long trips where maintaining a consistent speed is crucial for comfort and focus. Moreover, neglecting this issue could result in more severe problems, such as throttle actuation failures or control module malfunctions, which may escalate into costly repairs. Additionally, simple issues like blown fuses or faulty brake lights, if left unattended, can compound the problem, leading to further complications. Therefore, it is essential to diagnose and resolve the underlying cause of the malfunction as soon as possible to ensure a safe and enjoyable driving experience. Taking prompt action not only enhances your comfort on the road but also prevents potential safety hazards that could arise from a malfunctioning cruise control system.

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.

2006 Mercedes-Benz S500 Cruise Control Issues & Repair Costs