1999 Mercedes-Benz C280 Cruise Control Isn't Working

Fixing Cruise Control Issues in Your 1999 Mercedes-Benz C280

Find Repair Location
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 1999 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 1999 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 steps to diagnose the non-functioning cruise control in a 1999 Mercedes-Benz C280?

To effectively diagnose the non-functioning cruise control in a 1999 Mercedes-Benz C280, start with the simplest checks before moving on to more complex diagnostics. Begin by inspecting the cruise control fuse; a blown fuse can easily disrupt the system's functionality. Next, examine the cruise control switch for any visible damage or malfunction, as this component is crucial for activating the system. It's also important to check the brake pedal switch, which disengages the cruise control when the brake is applied; if this switch is faulty, it may prevent the cruise control from engaging. Utilizing a diagnostic scanner can help identify any error codes stored in the vehicle's onboard computer, providing insight into potential issues. Lastly, inspect the vacuum lines connected to the cruise control system for any leaks or damage, as these can significantly impact performance. By following these steps, you can systematically identify and address the issues affecting your cruise control system.

What are the common problems that could cause the cruise control to stop working in a 1999 Mercedes-Benz C280?

When dealing with a malfunctioning cruise control system in a 1999 Mercedes-Benz C280, it's essential to understand the common problems that could be at play. Start by checking the fuses in the fuse box, as a blown fuse can easily disrupt the cruise control functionality. Next, inspect the cruise control switch to ensure it is operational; a faulty switch can prevent the system from engaging. Additionally, examine the wiring for any signs of damage or looseness, as these can interfere with the electrical signals necessary for cruise control to function. The brake pedal switch is another critical component; if it is defective, it may inadvertently signal the system to disengage. Furthermore, the vehicle speed sensor must be functioning correctly, as it provides the necessary data for maintaining speed. Lastly, assess the cruise control module itself for any signs of malfunction. By systematically checking these components, you can effectively diagnose and potentially resolve the cruise control issues in your vehicle, making it a manageable DIY project.

How urgent is it to repair the non-functioning cruise control in a 1999 Mercedes-Benz C280?

Repairing the non-functioning cruise control in a 1999 Mercedes-Benz C280 should be considered a priority due to its significant impact on safety, comfort, and vehicle performance. A malfunctioning cruise control system can lead to increased driver fatigue and distraction, particularly during long drives, which heightens the risk of accidents. Additionally, the absence of this feature can detract from the overall driving experience, making journeys less comfortable and more taxing on the driver. Furthermore, issues with the cruise control may signal underlying problems within other vehicle systems, potentially leading to more extensive damage if left unaddressed. Therefore, taking prompt action to repair the cruise control not only enhances driving safety and comfort but also helps maintain the vehicle's overall performance, making it a wise decision for any DIY enthusiast.

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.