2002 Mercedes-Benz C240 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2002 Mercedes-Benz C240 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 2002 Mercedes-Benz C240 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 2002 Mercedes-Benz C240 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 2002 Mercedes-Benz C240?

When troubleshooting the non-functioning cruise control in a 2002 Mercedes-Benz C240, it's crucial to follow a structured diagnostic approach to identify and resolve the issue effectively. Begin by inspecting the cruise control fuse in the fuse box, as a blown fuse is often the simplest problem to fix. Next, verify that the cruise control settings are correctly configured and activated, since incorrect settings can prevent the system from engaging. Utilizing a diagnostic scanner to check for error codes can reveal any electronic issues affecting the cruise control system. Additionally, examine the cruise control switch on the steering wheel for any signs of damage or malfunction, as this component is essential for operation. Lastly, inspect the brake pedal switch, as the cruise control system is designed to disengage when the brake pedal is pressed; a stuck or faulty switch can inadvertently disable the cruise control. By systematically addressing these areas, you can effectively narrow down the potential causes of the cruise control malfunction and take the necessary steps to restore its functionality.

What are the common problems that could cause the cruise control to stop working in a 2002 Mercedes-Benz C240?

When dealing with cruise control issues in a 2002 Mercedes-Benz C240, it's essential to understand the common problems that may be at play. One frequent culprit 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, vacuum leaks within the system can disrupt the cruise control's ability to maintain speed, leading to erratic performance. Another potential issue is a defective speed sensor, which can result in inaccurate speed readings and hinder the cruise control's functionality. It's also worth checking for a blown fuse related to the cruise control system, as this can completely disable the feature. Lastly, throttle-related problems, such as a sticky throttle or issues with the throttle position sensor, can significantly impact the cruise control's operation. By systematically addressing these common issues, DIYers can effectively troubleshoot and potentially resolve the cruise control problems in their vehicle.

How urgent is it to repair the non-functioning cruise control in a 2002 Mercedes-Benz C240?

Repairing the non-functioning cruise control in a 2002 Mercedes-Benz C240 should be viewed as a priority, albeit not as urgent as more critical mechanical failures. The absence of cruise control can lead to increased driver fatigue, especially during long drives, as it requires constant speed adjustments that can distract from the road. This distraction can compromise safety, making it essential to address the issue to enhance driving comfort and reduce the risk of accidents. Additionally, a functioning cruise control system contributes to a more enjoyable driving experience, allowing for relaxed travel on highways. Furthermore, if you plan to sell or trade in your vehicle, having a fully operational cruise control can positively impact its resale value. Therefore, while the immediate safety risks may not be severe, the overall benefits of repairing the cruise control system make it a worthwhile investment for both safety and comfort.

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.