Mercedes-Benz AMG GT Cruise Control Isn't Working

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

When troubleshooting cruise control issues in your Mercedes-Benz AMG GT, it's essential to adopt a systematic diagnostic approach. Start by checking the simplest components, such as the cruise control switch and any related fuses, as these are often the culprits behind malfunctioning systems. Next, inspect the ABS wheel speed sensor, as problems here can disable the cruise control entirely. If these initial checks do not reveal the issue, examine the spiral cable in the steering wheel, which is crucial for communication between the control switch and the vehicle's systems. Additionally, look for any signs of electrical problems, such as faulty connectors or damaged wiring, which can disrupt the cruise control's functionality. If these steps do not resolve the issue, it may be time to consult a qualified mechanic or dealership for a more in-depth diagnosis, ensuring that your vehicle's cruise control system is restored to optimal working condition.

What Could Cause Cruise Control Issues in a Mercedes-Benz AMG GT?

When troubleshooting cruise control issues in a Mercedes-Benz AMG GT, it's essential to consider several common problems that could be affecting the system's performance. One of the primary culprits is a defective brake pedal switch, which is crucial for disengaging cruise control when the brake is applied. If this switch malfunctions, it can prevent the cruise control from functioning correctly. Additionally, a dead battery can disrupt various electronic systems in the vehicle, including cruise control, leading to unexpected failures. Another potential issue is a faulty ABS wheel speed sensor; if this sensor is not working properly, it can trigger warning lights and interfere with the cruise control operation. Lastly, underlying engine or transmission problems can also cause the cruise control to deactivate, especially if the engine light is illuminated. Addressing these issues promptly is vital for restoring the cruise control functionality and ensuring a smooth driving experience in your AMG GT.

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

When the cruise control in your Mercedes-Benz AMG GT is not functioning, it is crucial to address the issue without delay. Ignoring symptoms such as a non-responsive cruise control can lead to more significant problems, including potential safety hazards while driving. For instance, a defective brake pedal switch or a malfunctioning ABS wheel speed sensor can not only prevent cruise control from engaging but may also compromise your vehicle's overall braking system. Additionally, warning lights for ESP and ABS can indicate underlying issues that, if left unresolved, could lead to costly repairs or even dangerous driving conditions. It is essential to recognize that problems with the engine or a check engine light can also interfere with cruise control functionality, further emphasizing the need for immediate attention. By having your vehicle inspected by a qualified service team, you can ensure that any issues are diagnosed and resolved promptly, maintaining both your safety and the performance of your AMG GT.

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