2021 Mercedes-Benz AMG GT 53 Cruise Control Isn't Working

Cruise Control Malfunctions in 2021 Mercedes-Benz AMG GT 53 and Solutions

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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 2021 Mercedes-Benz AMG GT 53 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 2021 Mercedes-Benz AMG GT 53 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 2021 Mercedes-Benz AMG GT 53?

To effectively diagnose the cruise control issue in your 2021 Mercedes-Benz AMG GT 53, start with a systematic approach that prioritizes simpler checks before moving on to more complex diagnostics. Begin by inspecting the cruise control fuse, as a blown fuse is a common and easily fixable problem that can disrupt the system's functionality. Next, examine the cruise control buttons on your steering wheel for any signs of sticking or malfunction, as these controls are essential for operation. If these initial checks do not reveal the issue, utilize an OBD-II scanner to identify any error codes that may indicate specific problems within the cruise control system. Following this, assess the speed sensors, which are critical for the cruise control's performance; faulty sensors can lead to significant issues. Additionally, inspect the wiring connections associated with the cruise control system for any damage or corrosion, as poor connections can hinder functionality. Finally, if all else fails, test the cruise control module itself to ensure it is operating correctly. By following this structured diagnostic approach, you can efficiently identify and address the root cause of the cruise control problem in your vehicle.

What are the common problems that could cause the cruise control to malfunction in a 2021 Mercedes-Benz AMG GT 53?

When dealing with cruise control malfunctions in a 2021 Mercedes-Benz AMG GT 53, it's essential to recognize several common problems that could be at play. One of the primary culprits is sensor issues, particularly with the speed or throttle position sensors, which can lead to incorrect speed readings and disrupt the system's functionality. Additionally, electrical problems such as blown fuses or faulty wiring can significantly impact the cruise control module, causing it to fail. Another frequent issue arises from a malfunctioning brake light switch, which may prevent the cruise control from engaging or disengaging correctly when the brakes are applied. Vacuum leaks can also pose a problem, as they can hinder the system's ability to maintain a steady speed. Furthermore, software glitches within the cruise control's programming can lead to erratic behavior, while mechanical issues, such as a sticking throttle or problems with the throttle body, can interfere with speed maintenance. Understanding these potential issues can empower DIY enthusiasts to diagnose and address cruise control problems effectively, ensuring a safer driving experience.

How urgent is it to repair the non-functioning cruise control in a 2021 Mercedes-Benz AMG GT 53?

When it comes to the urgency of repairing the non-functioning cruise control in a 2021 Mercedes-Benz AMG GT 53, several critical factors come into play. First and foremost, safety is paramount; a malfunctioning cruise control system can lead to erratic speed changes, increasing the risk of accidents, particularly on highways where maintaining a consistent speed is essential. Additionally, the comfort and convenience that cruise control provides cannot be overlooked. It significantly reduces driver fatigue during long journeys, allowing for a more relaxed driving experience. Furthermore, addressing this issue promptly can have a positive impact on the vehicle's resale value. Potential buyers are often wary of unresolved mechanical problems, which can deter them and diminish the car's market appeal. Therefore, it is crucial to prioritize the repair of the cruise control system not only to ensure safety and comfort but also to protect the investment in your vehicle. Taking action sooner rather than later will help maintain optimal performance and enhance your overall driving experience.

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