Mercedes-Benz GL63 AMG Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your Mercedes-Benz GL63 AMG and How to Fix Them

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Reviewed by
Aisha
Written by RepairPal Car Genius
Updated January 14, 2025
0%
30% chance it's the
Sensor
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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 GL63 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 GL63 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.

The cruise control switch can cause complete failure of the cruise control feature, but in a lucky scenario only partial functionality will be lost. This means that the cruise control may come on, but that it will not increase in speed automatically, or the cancel button does not work leading the driver to cancel cruise control with the foot brake. In some vehicles, the cruise control light may illuminate, or a warning message may be displayed due to lack of functionality.

Troubleshooting Cruise Control Issues in a Mercedes-Benz GL63 AMG

When troubleshooting cruise control issues in a Mercedes-Benz GL63 AMG, it's essential to adopt a systematic diagnostic approach that begins with the simplest potential fixes before delving into more complex components. Start by checking the brake pedal switch, as a malfunction here can prevent the cruise control from engaging. Next, inspect the fuses related to the cruise control system, since a blown fuse can easily disrupt functionality. If these initial checks do not resolve the issue, move on to the throttle position sensor, as its failure can lead to erratic engine behavior that affects cruise control performance. Additionally, assess the control module, sensors, and switches for any signs of failure, as these are common culprits. If the cruise control still does not work, consider examining the speed sensor and speedometer, as inaccuracies here can hinder the system's operation. Finally, if all else fails, investigate potential engine or transmission issues, as these can also cause the cruise control to disengage unexpectedly. By following this structured approach, you can effectively identify and resolve the underlying problems affecting your vehicle's cruise control system.

What Could Cause the Cruise Control to Malfunction in a Mercedes-Benz GL63 AMG?

When dealing with cruise control malfunctions in a Mercedes-Benz GL63 AMG, it's essential to understand the common problems that may arise. One of the primary culprits is a failed control module, sensor, or switch, which can disrupt the proper functioning of the cruise control system. Additionally, throttle actuation issues can prevent the system from engaging correctly. If you encounter error codes such as P0580 or P0565, these indicate specific circuit malfunctions that require diagnostic scanning and visual inspections of the cruise control components. A defective brake pedal switch is another frequent issue, as it can inadvertently disable the cruise control. Furthermore, broader vehicle system problems, such as engine or transmission malfunctions, can also lead to cruise control failure, especially if the engine light is illuminated. By understanding these potential issues, DIYers can effectively troubleshoot and address cruise control problems in their GL63 AMG, ensuring a smoother driving experience.

Why is the Cruise Control Not Working in a Mercedes-Benz GL63 AMG?

When the cruise control in your Mercedes-Benz GL63 AMG fails to operate, it is crucial to address the issue promptly, as neglecting it can lead to safety risks and further complications. A defective brake pedal switch is a common culprit, as it can prevent the system from engaging, leaving you without the convenience of maintaining speed on long drives. Additionally, a dead battery or a malfunctioning ABS wheel speed sensor can disrupt the cruise control functionality, potentially leading to erratic vehicle behavior. Problems with the throttle control system or ABS can also contribute to this malfunction, making it essential to investigate these components. In older models, a broken vacuum line may be the source of the issue, which can be overlooked if not properly inspected. Given the potential for these problems to escalate, it is advisable to seek a professional evaluation to ensure your vehicle remains safe and reliable on the road.

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