Mercedes-Benz AMG GT 63 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your Mercedes-Benz AMG GT 63 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 AMG GT 63 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 AMG GT 63 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.

A faulty cruise control module will simply result in deactivation of cruise control settings. This is because a detected error in the cruise control system could lead to hazardous driving conditions, so the module will be disabled, and the cruise control system warning light will be displayed. This will be a different message depending on make and model, and a warning light or message may be displayed on the driver instrument cluster.

Troubleshooting Cruise Control Issues in a Mercedes-Benz AMG GT 63

When troubleshooting cruise control issues in your Mercedes-Benz AMG GT 63, it's essential to adopt a systematic diagnostic approach. Start by checking the simplest components, such as the cruise control lever on the steering column, as communication errors here can often lead to functionality problems. Next, inspect the brake light switch; even if the brake lights are operational, a malfunctioning switch can disable the cruise control system. If these initial checks do not resolve the issue, move on to examining the control module, sensors, and switches for any signs of failure. Pay particular attention to the throttle actuation and the ABS sensors, as these can also impact cruise control performance. Lastly, consider the actuator under the hood, ensuring it has the correct resistance levels to avoid damaging the controller. By following this methodical approach, you can effectively identify and address the root cause of your cruise control problems, ensuring a smoother driving experience.

Troubleshooting Cruise Control Issues in a Mercedes-Benz AMG GT 63

When troubleshooting cruise control issues in your Mercedes-Benz AMG GT 63, it's crucial to understand the common problems that may arise. One frequent culprit is a malfunctioning control module, sensor, or switch, which can prevent the cruise control from engaging properly. Additionally, throttle actuation problems can disrupt the system's functionality, leading to erratic behavior or complete failure. If you encounter an "inoperative" warning message on your dashboard, this indicates that the cruise control system has detected a fault, often linked to the brake light switch. A faulty brake light switch can mislead the system into thinking the brakes are applied, thereby disabling cruise control. Furthermore, both electronic and mechanical components should be inspected for faults, especially in non-vacuum systems. For those with some technical skills, checking solder connections in the cruise control controller can also be beneficial; reflowing old solder joints with high-grade solder can resolve intermittent issues. By systematically addressing these potential problems, you can effectively diagnose and potentially fix cruise control malfunctions in your AMG GT 63.

Why is the Cruise Control Not Working in a Mercedes-Benz AMG GT 63?

When the cruise control in your Mercedes-Benz AMG GT 63 is not functioning, it is crucial to address the issue without delay. Ignoring the problem can lead to more severe consequences, such as compromised vehicle control and increased driver fatigue during long drives. The malfunction could stem from various sources, including a failing ABS sensor, which not only affects cruise control but also impacts the vehicle's stability and braking systems. Additionally, a defective cruise control module or a damaged speed sensor can disrupt the system's ability to maintain speed, potentially resulting in erratic vehicle behavior. Given the performance nature of the AMG GT 63, any malfunction can significantly affect your driving experience and safety. Therefore, it is advisable to have the vehicle inspected by a qualified technician as soon as possible to diagnose and rectify the issue, ensuring both your safety and the longevity of your vehicle.

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