2019 Mercedes-Benz C63 AMG S Cruise Control Isn't Working

Fixing Cruise Control Issues in 2019 Mercedes-Benz C63 AMG S

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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 2019 Mercedes-Benz C63 AMG S 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 2019 Mercedes-Benz C63 AMG S 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 steps should I take to diagnose the cruise control issue in my 2019 Mercedes-Benz C63 AMG S?

To effectively diagnose the cruise control issue in your 2019 Mercedes-Benz C63 AMG S, begin with the simplest solutions before progressing to more intricate assessments. Start by checking the cruise control fuse, as a blown fuse is a common and easily fixable problem that can disrupt functionality. Next, inspect the cruise control buttons on your steering wheel to ensure they are responsive and not stuck, as this can also lead to operational failures. If these initial checks do not resolve the issue, utilize a diagnostic scanner to identify any error codes that may indicate specific malfunctions within the system. Pay particular attention to the speed sensors, as they are critical for cruise control operation; faulty sensors can prevent the system from engaging properly. Additionally, examine the wiring and connections for any signs of wear or corrosion, which can impede electrical flow. If all else fails, test the cruise control module itself, as a malfunction here can be the root cause of the problem. Should you still be unable to pinpoint the issue, seeking assistance from a professional mechanic or an authorized Mercedes-Benz service center is recommended to ensure a thorough diagnosis and repair. By following this structured approach, you can systematically identify and address the cruise control issue in your vehicle.

What are the common problems that could cause the cruise control to stop working in a 2019 Mercedes-Benz C63 AMG S?

When troubleshooting the cruise control system in a 2019 Mercedes-Benz C63 AMG S, it's essential to consider several common problems that could lead to its malfunction. One of the primary culprits is a faulty speed sensor, which is crucial for the system to accurately gauge the vehicle's speed. If this sensor is not functioning correctly, the cruise control may not engage or maintain speed as intended. Additionally, issues with the brake light switch can disrupt the system's operation; if the switch is stuck or malfunctioning, it may signal the cruise control to disengage unexpectedly. Another potential issue is a malfunctioning throttle actuator, which can hinder communication between the cruise control and the engine, preventing the system from maintaining speed. Furthermore, a defective cruise control module itself can be the root cause, as it is responsible for the overall functionality of the system. Lastly, electrical problems such as wiring issues or blown fuses can also impede the cruise control's operation. By systematically checking these components, DIY enthusiasts can effectively diagnose and potentially resolve the cruise control issues in their vehicle.

How urgent is it to repair the non-functioning cruise control in a 2019 Mercedes-Benz C63 AMG S?

Repairing the non-functioning cruise control in your 2019 Mercedes-Benz C63 AMG S should be prioritized due to its implications for safety and driving comfort. While the vehicle may still operate without this feature, the absence of cruise control can lead to increased driver fatigue, especially on long trips, which may heighten the risk of accidents. Additionally, a functioning cruise control system enhances the overall driving experience, allowing for a more relaxed journey. From a financial perspective, addressing this issue promptly can help maintain the vehicle's resale value, as potential buyers often look for well-maintained features. Furthermore, neglecting the repair could lead to more significant electrical problems down the line, impacting other systems in the vehicle. Therefore, while it may not be an immediate emergency, taking action to repair the cruise control is a wise decision that contributes to your safety, comfort, and the long-term value of your car.

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