Mercedes-Benz C36 AMG Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your Mercedes-Benz C36 AMG 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
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25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a Mercedes-Benz C36 AMG 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 Mercedes-Benz C36 AMG 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.

Troubleshooting Cruise Control Issues in a Mercedes-Benz C36 AMG

When troubleshooting cruise control issues in a Mercedes-Benz C36 AMG, it's essential to adopt a systematic diagnostic approach that begins with the simplest potential fixes before delving into more complex problems. Start by inspecting the brake pedal switch, as a defective switch is a common culprit that can prevent the cruise control from engaging. Next, check the ABS wheel speed sensor, which can trigger warning lights and disrupt the cruise control functionality if faulty. Additionally, examine the spiral cable within the steering wheel, as any damage here can hinder communication between the cruise control switch and the system itself. It's also crucial to assess the vehicle's electrical components for any issues, such as loose connectors or damaged wiring, which can lead to malfunctions. Finally, consider any engine-related problems, including blown fuses or illuminated check engine lights, as these can also impact the cruise control system. By following this methodical approach, you can effectively identify and resolve the underlying issues affecting your cruise control.

What Are the Common Causes of Cruise Control Malfunction in a Mercedes-Benz C36 AMG?

When troubleshooting cruise control malfunctions in a Mercedes-Benz C36 AMG, it's essential to understand the common problems that may arise. A failed control module, sensor, or switch can often disrupt the cruise control functionality, making it crucial to inspect these components first. Additionally, a defective brake pedal switch is frequently the culprit behind cruise control issues, as it can prevent the system from engaging properly. Problems with throttle actuation can also hinder cruise control performance, so checking this area is advisable. Furthermore, a faulty ABS wheel speed sensor may not only disable cruise control but also trigger warning lights for the ESP and ABS systems, indicating a broader issue. Other potential causes include a blown fuse, malfunctioning brake lights, or a bad brake switch, all of which can lead to cruise control failure. Lastly, engine-related problems, often signaled by a check engine light, can also interfere with cruise control operation. To effectively diagnose these issues, utilizing a diagnostic scanner to retrieve fault codes and performing a thorough visual inspection of the cruise control components is recommended. Testing the cruise control switch and module for functionality and replacing any defective parts can help restore proper operation.

Why is the Cruise Control Not Working in a Mercedes-Benz C36 AMG?

When the cruise control in your Mercedes-Benz C36 AMG is not functioning, it is crucial to address the issue promptly, as neglecting it can lead to safety risks and further complications. Common culprits include a failed control module, defective brake pedal switch, or issues with the throttle actuation system, all of which can hinder the cruise control's operation. Additionally, a faulty ABS wheel speed sensor or an ESP error can automatically disable the system, often linked to problems with the brake light switch or steering angle sensor. In older models, a broken vacuum line may also be responsible for the malfunction. Given that these components are integral to the safe operation of your vehicle, it is advisable to conduct a thorough inspection and resolve any identified issues as soon as possible to ensure both your safety and the optimal performance of your car.

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