2014 Mercedes-Benz C250 Cruise Control Isn't Working

Fixing Cruise Control Issues in the 2014 Mercedes-Benz C250

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 2014 Mercedes-Benz C250 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 2014 Mercedes-Benz C250 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 steps to diagnose the non-functioning cruise control in a 2014 Mercedes-Benz C250?

When diagnosing the non-functioning cruise control in a 2014 Mercedes-Benz C250, it's essential to adopt a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Begin by inspecting the cruise control fuse in the fuse box, as a blown fuse is a straightforward issue that can easily be resolved. Next, examine the cruise control buttons on the steering wheel to ensure they are not stuck or damaged, as this can directly affect functionality. Utilizing a diagnostic scanner to check for error codes can provide valuable insights into any underlying electronic issues. Following this, inspect the speed sensors, as they are critical for the cruise control system to operate correctly. Additionally, verify that the brake and clutch switches are functioning properly, since faulty switches can prevent the system from engaging. If these initial checks do not reveal the problem, proceed to test the cruise control module to ensure it is sending the correct signals. Lastly, inspect the wiring and connections for any signs of damage or corrosion that could disrupt the system. If these steps do not lead to a resolution, consulting a professional mechanic or an authorized Mercedes-Benz service center is advisable for further assistance. This methodical approach not only helps in identifying the issue efficiently but also saves time and resources in the troubleshooting process.

What are the common problems that could cause the cruise control to stop working in a 2014 Mercedes-Benz C250?

When troubleshooting the cruise control system in a 2014 Mercedes-Benz C250, it's essential to understand the common problems that may lead to its malfunction. 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 failure. Another potential problem is a malfunctioning throttle actuator, which is responsible for adjusting the engine's throttle based on the cruise control settings. Electrical issues, such as blown fuses or wiring problems, can also interfere with the cruise control's functionality. Lastly, if the cruise control module itself fails, it can result in a complete shutdown of the system. By identifying these common issues, DIY enthusiasts 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 2014 Mercedes-Benz C250?

When it comes to a non-functioning cruise control in a 2014 Mercedes-Benz C250, the urgency of addressing the issue cannot be overstated. While it may not seem like an immediate emergency, neglecting this problem can lead to significant safety risks and potential damage to the vehicle. Cruise control is designed to enhance driving comfort and efficiency, particularly on long journeys, but its failure may signal deeper issues within the vehicle's systems. For instance, it could indicate problems with the throttle, brake system, or even electrical components, which, if left unchecked, could compromise the overall performance and safety of the car. Moreover, ignoring the malfunction could result in increased driver fatigue and a higher likelihood of accidents, as the driver may need to exert more effort to maintain speed. Therefore, it is advisable to have the cruise control system inspected and repaired promptly to ensure the safe and efficient operation of your vehicle. Taking action sooner rather than later can prevent more extensive repairs and enhance your driving experience.

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.