2022 Mercedes-Benz C300 Cruise Control Isn't Working

Fixing Cruise Control Issues in the 2022 Mercedes-Benz C300

Find Repair Location
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 2022 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 2022 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-functional cruise control in a 2022 Mercedes-Benz C300?

When troubleshooting the non-functional cruise control in a 2022 Mercedes-Benz C300, it's crucial to follow a methodical diagnostic approach that prioritizes simpler checks before delving into more complex issues. Begin by inspecting the cruise control fuse, as a blown fuse can easily disrupt the system's operation. Next, ensure that the cruise control settings are correctly configured according to the user manual, as incorrect settings can prevent the system from engaging. It's also advisable to examine the cruise control buttons on the steering wheel for any signs of sticking or malfunction, as these can hinder functionality. Utilizing a diagnostic scanner to check for error codes can reveal hidden problems that may not be immediately apparent. Additionally, assess the vehicle speed sensor, since a faulty sensor can lead to erratic cruise control behavior. Lastly, verify the functionality of the brake and clutch switches, as these components are designed to disengage the cruise control when necessary. By systematically addressing these areas, you can effectively diagnose and resolve the issues affecting your cruise control system.

What are the common problems that could cause the cruise control to stop working in a 2022 Mercedes-Benz C300?

When the cruise control in your 2022 Mercedes-Benz C300 ceases to function, it can be frustrating, but understanding the common problems can help you troubleshoot effectively. One of the primary culprits is a faulty speed sensor, which is crucial for the system to accurately gauge your vehicle's speed. If this sensor malfunctions, the cruise control may fail to engage or maintain the desired speed. Another frequent issue arises from the brake light switch; if this switch is defective, it may not signal the cruise control system to disengage when the brake pedal is pressed, leading to operational failures. Additionally, problems with the throttle actuator can hinder the system's ability to maintain speed, as this component regulates the engine's throttle opening. A defective cruise control module can also disrupt functionality, preventing the system from engaging properly. Lastly, electrical issues such as wiring faults or blown fuses can significantly impact the cruise control system's performance. By identifying and addressing these common problems, you can take the first steps toward restoring your cruise control functionality.

How urgent is it to address the malfunctioning cruise control in a 2022 Mercedes-Benz C300?

When it comes to a malfunctioning cruise control in a 2022 Mercedes-Benz C300, the urgency of addressing the issue cannot be overstated. A faulty cruise control system can compromise your ability to maintain a steady speed, which not only affects your comfort during long drives but also poses significant safety risks on the road. If the cruise control is malfunctioning, it may be indicative of deeper electronic or sensor issues that could disrupt other critical vehicle functions. Moreover, neglecting this problem can lead to decreased fuel efficiency, ultimately impacting your overall driving experience and increasing your long-term costs. By addressing the malfunction promptly, you not only enhance your safety but also prevent potential further damage to your vehicle, which could result in more expensive repairs down the line. Therefore, it is crucial to have the cruise control system diagnosed and repaired by a qualified technician as soon as possible to ensure your Mercedes-Benz C300 operates at its best.

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.