2020 Mercedes-Benz GLC63 AMG Cruise Control Isn't Working

Fixing Cruise Control Issues in 2020 Mercedes-Benz GLC63 AMG

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Reviewed by
Bo Fader
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 2020 Mercedes-Benz GLC63 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 2020 Mercedes-Benz GLC63 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.

What steps should I take to diagnose the cruise control issue in my 2020 Mercedes-Benz GLC63 AMG?

When diagnosing the cruise control issue in your 2020 Mercedes-Benz GLC63 AMG, 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, as a blown fuse can easily disrupt functionality. Next, examine the cruise control buttons on the steering wheel to ensure they are operational, since faulty buttons can lead to malfunctions. Utilizing a diagnostic scanner to check for error codes in the vehicle's computer system can provide valuable insights into specific issues affecting the cruise control. Additionally, verify that the speed sensors are functioning correctly, as they are integral to the system's operation. It's also crucial to inspect the wiring connections associated with the cruise control system for any signs of damage or loose connections, as these can significantly impact performance. Finally, testing the cruise control module will help determine if it is working properly, as a malfunctioning module can be the root cause of the problem. By following this structured diagnostic approach, you can effectively 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 2020 Mercedes-Benz GLC63 AMG?

When the cruise control in your 2020 Mercedes-Benz GLC63 AMG stops functioning, it can be frustrating, but understanding the common problems can help you diagnose the issue effectively. One of the primary culprits is a faulty speed sensor, which is crucial for the cruise control system to accurately gauge your vehicle's speed. If this sensor is malfunctioning, the system may fail to engage or maintain the desired speed. Another frequent issue arises from the brake light switch; if this switch is defective, it can prevent the cruise control from activating or disengaging properly, as the system is designed to turn off when the brake pedal is pressed. Additionally, a malfunctioning throttle actuator can disrupt the system's ability to maintain a constant speed, as it controls the engine's throttle opening. Electrical problems, such as blown fuses or wiring issues, can also hinder the cruise control's performance, as can software glitches within the vehicle's control module. By identifying these potential problems, you can take the first steps toward troubleshooting and restoring your cruise control functionality, whether through DIY repairs or by consulting a professional technician.

How urgent is it to repair the non-functioning cruise control on a 2020 Mercedes-Benz GLC63 AMG?

When evaluating the urgency of repairing the non-functioning cruise control on your 2020 Mercedes-Benz GLC63 AMG, it's essential to recognize the implications of this issue. While it may not seem as critical as other mechanical failures, the absence of cruise control can compromise safety by preventing the driver from maintaining a consistent speed, particularly on long drives or highways. This inconsistency can lead to fatigue and increased risk of accidents. Additionally, the convenience factor cannot be overlooked; cruise control significantly enhances driving comfort, allowing for a more relaxed experience during extended trips. Furthermore, if you plan to sell your vehicle in the future, a fully operational cruise control system is a sought-after feature that can positively influence resale value. Therefore, while the repair may not be immediately urgent, addressing it promptly is advisable to ensure a safer, more comfortable driving experience and to protect your investment in the vehicle.

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