2013 Mercedes-Benz C300 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2013 Mercedes-Benz C300 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 2013 Mercedes-Benz C300 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 2013 Mercedes-Benz C300 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 2013 Mercedes-Benz C300?

When faced with a non-functioning cruise control in your 2013 Mercedes-Benz C300, start by checking the cruise control fuse, as a blown or damaged fuse can easily disrupt the system's operation. Next, inspect the cruise control switch located on the steering wheel to ensure it is working correctly; a faulty switch can prevent the system from engaging. It's also crucial to verify the functionality of the vehicle speed sensor, as it provides the necessary data for the cruise control to maintain speed. Additionally, examine the brake pedal switch, ensuring it is not stuck or malfunctioning, since the cruise control is designed to disengage when the brakes are applied. Finally, consider scanning the vehicle's onboard computer for any error codes that may indicate specific issues within the cruise control system. By systematically following these steps, you can effectively diagnose and potentially resolve the problem with your cruise control, saving time and money on repairs.

What are the common problems that could cause the cruise control to stop working in a 2013 Mercedes-Benz C300?

When the cruise control in a 2013 Mercedes-Benz C300 ceases to function, it is essential to consider several common problems that may be at play. One of the primary culprits is a faulty brake light switch, which can prevent the cruise control from engaging since the system is designed to deactivate when the brake pedal is pressed. Additionally, issues with the speed sensor can disrupt the system's ability to maintain a constant speed, leading to erratic performance. Another potential problem is a malfunctioning throttle actuator, which can hinder the cruise control's operation. Furthermore, a defective cruise control module may also be responsible for the system's failure to work correctly. Lastly, electrical problems, such as blown fuses or wiring issues, can significantly impact the cruise control's performance. By understanding these common issues, DIYers can better diagnose and address the problems affecting their vehicle's cruise control system.

How urgent is it to address the non-functioning cruise control in a 2013 Mercedes-Benz C300?

When it comes to a non-functioning cruise control in a 2013 Mercedes-Benz C300, the urgency of addressing the issue cannot be overstated. While it may seem like a minor inconvenience, neglecting this problem can lead to more significant safety risks and potential damage to the vehicle's electronic systems. Cruise control is designed to enhance driving comfort and efficiency, particularly on long journeys, and its failure may indicate underlying issues that could affect other critical functions of the car. For DIY enthusiasts, it’s essential to recognize that while troubleshooting minor issues may be feasible, the complexity of modern vehicle electronics often necessitates professional diagnostics. Therefore, if you notice your cruise control is malfunctioning, it’s advisable to investigate the problem promptly, as timely intervention can prevent further complications and ensure your vehicle remains safe and reliable on the road.

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