2023 Mercedes-Benz AMG GT 43 Cruise Control Isn't Working

Fixing Cruise Control Malfunctions in 2023 Mercedes-Benz AMG GT 43

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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 2023 Mercedes-Benz AMG GT 43 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 2023 Mercedes-Benz AMG GT 43 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.

What steps should I take to diagnose the cruise control issue in my 2023 Mercedes-Benz AMG GT 43?

To effectively diagnose the cruise control issue in your 2023 Mercedes-Benz AMG GT 43, begin with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by inspecting the cruise control fuse, as a blown fuse can easily disrupt functionality. Next, examine the cruise control buttons on your steering wheel to ensure they are responsive and not malfunctioning. If these initial checks do not reveal the problem, utilize an OBD-II scanner to identify any error codes that may indicate specific issues within the cruise control system. Following this, assess the speed sensors, as they play a crucial role in maintaining the set speed; any faults here could hinder performance. Additionally, inspect the wiring connections associated with the cruise control system for any signs of damage or loose connections, as these can also lead to operational failures. If these steps do not resolve the issue, it may be time to consult a professional mechanic or an authorized Mercedes-Benz service center for a comprehensive diagnosis and repair. By following this structured diagnostic approach, you can efficiently identify and address the cruise control problem in your vehicle.

What are the common problems that could cause the cruise control to malfunction in a 2023 Mercedes-Benz AMG GT 43?

When dealing with cruise control malfunctions in a 2023 Mercedes-Benz AMG GT 43, it's essential to understand the common problems that may arise. One prevalent issue is faulty speed sensors, which can hinder the system's ability to maintain the desired speed accurately. Additionally, a malfunctioning brake light switch can disrupt the cruise control's engagement, causing it to disengage unexpectedly when the brakes are applied. Throttle control issues, such as a sticky throttle or problems with the throttle position sensor, can also significantly impact performance. Electrical problems, including blown fuses or wiring issues, may lead to system failures, while vacuum leaks in the engine can prevent the cruise control from maintaining a steady speed. By recognizing these potential issues, DIY enthusiasts can better diagnose and address cruise control problems, ensuring a smoother driving experience.

How urgent is it to address the malfunctioning cruise control in my 2023 Mercedes-Benz AMG GT 43?

When it comes to the malfunctioning cruise control in your 2023 Mercedes-Benz AMG GT 43, the urgency of addressing this issue cannot be overstated. A malfunctioning cruise control system can lead to unpredictable vehicle behavior, such as sudden acceleration or deceleration, which poses a significant safety risk not only to you but also to other road users. Additionally, the convenience and enjoyment of driving your luxury vehicle can be severely impacted, detracting from the overall driving experience that Mercedes-Benz is known for. Ignoring these symptoms may lead to more extensive damage to the vehicle's electronic systems, resulting in costly repairs that could have been avoided with prompt attention. Furthermore, maintaining the functionality of all systems, including cruise control, is crucial for preserving the resale value of your AMG GT 43. Therefore, it is essential to have any cruise control issues diagnosed and repaired by a qualified technician as soon as possible to ensure your vehicle remains safe, reliable, and enjoyable to drive.

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