2019 Mercedes-Benz AMG GT Cruise Control Isn't Working

Fixing Cruise Control Issues in Your 2019 Mercedes-Benz AMG GT

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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 2019 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 2019 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.

What are the initial steps to diagnose the cruise control issue in a 2019 Mercedes-Benz AMG GT?

When diagnosing cruise control issues in a 2019 Mercedes-Benz AMG GT, it's essential to adopt a methodical diagnostic approach. Start by checking the cruise control settings to ensure the system is activated and set to the desired speed. Next, inspect the cruise control buttons on the steering wheel for any signs of malfunction, as faulty buttons can hinder functionality. Utilizing a diagnostic scanner to scan for error codes is a crucial step, as these codes can pinpoint specific problems within the system. Additionally, inspect the fuses associated with the cruise control; blown fuses can disrupt the system's operation. It's also important to check the vehicle speed sensor, as a malfunctioning sensor can prevent the cruise control from maintaining speed. Finally, test the cruise control module to ensure it is communicating effectively. By following this structured approach, you can efficiently identify and address the underlying issues affecting your cruise control system.

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

When the cruise control in your 2019 Mercedes-Benz AMG GT stops functioning, it can be frustrating, but understanding the common issues can help you diagnose the problem. One frequent culprit is a faulty speed sensor, which is essential for the cruise control system to accurately gauge your vehicle's speed. If this sensor malfunctions, the system may fail to engage or maintain the desired speed. Another common issue is related to the brake light switch; if this switch is defective, it can prevent the cruise control from activating or cause it to disengage unexpectedly when you press the brake pedal. Additionally, a malfunctioning throttle actuator can disrupt the system's ability to maintain a constant speed, leading to erratic behavior. Electrical problems, such as blown fuses or wiring faults, can also interfere with cruise control operation, so checking these components is crucial. Lastly, software glitches in the vehicle's control module may require updates or resets to restore functionality. By systematically addressing these potential issues, you can effectively troubleshoot and potentially resolve the cruise control problems in your AMG GT.

How urgent is it to address the malfunctioning cruise control in my 2019 Mercedes-Benz AMG GT?

When it comes to your 2019 Mercedes-Benz AMG GT, addressing a malfunctioning cruise control system is not just a matter of convenience; it is a critical safety concern. A malfunction can lead to unexpected acceleration or deceleration, which significantly increases the risk of accidents on the road. The urgency to resolve this issue cannot be overstated, as neglecting it may not only compromise your safety but also that of other drivers. Furthermore, a faulty cruise control system can detract from your overall driving experience, making your time behind the wheel less enjoyable. Ignoring the problem could also lead to more extensive damage to other vehicle components, resulting in costly repairs down the line. Therefore, it is essential to prioritize fixing your cruise control system to ensure both your safety and the longevity of your vehicle.

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