2000 Mercedes-Benz C280 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2000 Mercedes-Benz C280 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 2000 Mercedes-Benz C280 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 C280 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 2000 Mercedes-Benz C280?

When troubleshooting the non-functioning cruise control in your 2000 Mercedes-Benz C280, start with the simplest solutions before moving on to more complex diagnostics. Begin by checking the cruise control fuse located in the fuse box; a blown fuse is often the culprit behind electrical issues. Next, inspect the cruise control buttons on the steering wheel to ensure they are operational, as faulty buttons can prevent the system from engaging. It's also essential to verify that the cruise control system is receiving power, which involves checking the relevant fuses and connections for any signs of damage or wear. If everything appears intact, consult your vehicle's manual for specific troubleshooting instructions tailored to your model. By following this methodical approach, you can effectively narrow down the potential causes of the cruise control malfunction and take the necessary steps to resolve the issue.

What are the common problems that could cause the cruise control to stop working in a 2000 Mercedes-Benz C280?

When the cruise control in a 2000 Mercedes-Benz C280 ceases to function, it can be frustrating, but understanding the common issues can guide you in diagnosing the problem. One frequent culprit is a faulty brake light switch, which is crucial for the cruise control system as it disengages the cruise when the brake pedal is pressed. If this switch is malfunctioning, it may prevent the cruise control from engaging at all. Another potential issue is vacuum leaks within the system; these leaks can disrupt the cruise control's ability to maintain a steady speed, leading to erratic performance. Additionally, a defective speed sensor can provide inaccurate speed readings, causing the cruise control to fail. Problems with the throttle cable, such as it being stuck or damaged, can also hinder the system's operation. Lastly, electrical issues, including blown fuses or wiring problems, can significantly impact the cruise control's functionality. By systematically checking these components, you can identify and address the root cause of the cruise control malfunction, restoring its functionality and enhancing your driving experience.

How urgent is it to address the non-functioning cruise control in a 2000 Mercedes-Benz C280?

When it comes to the non-functioning cruise control in a 2000 Mercedes-Benz C280, understanding the urgency of the situation is crucial for any DIY enthusiast. While the immediate safety risks may not be as pronounced as with other critical vehicle systems, neglecting this issue can lead to a cascade of problems that affect the overall driving experience. A malfunctioning cruise control can diminish the convenience and efficiency it offers, particularly during long drives, which can increase driver fatigue and reduce fuel efficiency. Moreover, postponing repairs might not only complicate the issue but could also result in additional strain on other vehicle components, potentially leading to more extensive and costly repairs down the line. Therefore, while it may not be an emergency, addressing the non-functioning cruise control promptly is advisable to maintain the vehicle's performance and ensure a safe and enjoyable driving experience.

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