2000 Mercedes-Benz S500 Cruise Control Isn't Working

Fixing Cruise Control Issues in the 2000 Mercedes-Benz S500

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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 2000 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 2000 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-functional cruise control in a 2000 Mercedes-Benz S500?

When faced with a non-functional cruise control in a 2000 Mercedes-Benz S500, it's crucial to adopt a systematic diagnostic approach. Start by checking the cruise control fuse in the fuse box; a blown fuse can often be the simplest fix. Next, examine the cruise control switch located on the steering wheel to ensure it is operational and free from damage. The brake pedal switch is another critical component to inspect, as a malfunction here can prevent the cruise control from engaging. Additionally, verify the functionality of the vehicle speed sensor, which is vital for the cruise control system to operate correctly. Finally, utilizing a diagnostic scanner to check for any error codes can provide deeper insights into the issue, guiding you toward a more precise solution. By following these steps, you can effectively troubleshoot and potentially resolve the cruise control problem in your vehicle.

What are the common problems that could cause the cruise control to stop working in a 2000 Mercedes-Benz S500?

When dealing with a malfunctioning cruise control system in a 2000 Mercedes-Benz S500, it's essential to understand the common issues that may be at play. One of the primary culprits is a faulty brake light switch, which can prevent the system from engaging if it fails to detect brake pedal activity. Additionally, vacuum leaks can disrupt the system's ability to maintain speed, leading to inconsistent performance. A defective speed sensor may also be responsible, as it can provide inaccurate speed readings that hinder cruise control functionality. It's also worth checking for a blown fuse, as this can completely disable the system. Throttle-related issues, such as a sticky throttle or problems with the throttle position sensor, can further complicate matters. Lastly, electrical issues, including faulty wiring or connections, can contribute to cruise control failure. By systematically addressing these potential problems, DIYers can effectively troubleshoot and restore the cruise control system to proper working order.

How urgent is it to repair the non-functioning cruise control on a 2000 Mercedes-Benz S500?

When evaluating the urgency of repairing the non-functioning cruise control on a 2000 Mercedes-Benz S500, it is crucial to recognize the implications of neglecting this issue. While it may not seem like an immediate emergency, the absence of a functioning cruise control system can significantly impact driving safety and comfort. Without cruise control, drivers are required to maintain speed manually, which can lead to fatigue and increased distraction, particularly on long trips. This not only affects the driver's experience but can also pose safety risks on the road. Additionally, a malfunctioning cruise control system may detract from the vehicle's resale value, as potential buyers often prioritize fully functional features. Furthermore, in certain regions, failing to repair such safety-related systems could result in legal repercussions. Therefore, while the repair may not be urgent in the traditional sense, addressing the non-functioning cruise control promptly is advisable to ensure a safer, more comfortable driving experience and to protect the vehicle's value.

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2000 Mercedes-Benz S500 Cruise Control Issues & Repairs