2023 Mercedes-Benz GLC43 AMG Cruise Control Isn't Working

Fixing Cruise Control Issues in the 2023 Mercedes-Benz GLC43 AMG

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Reviewed by
Aisha
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 GLC43 AMG 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 GLC43 AMG 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 2023 Mercedes-Benz GLC43 AMG?

To effectively diagnose the cruise control issue in your 2023 Mercedes-Benz GLC43 AMG, begin with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by inspecting the cruise control fuse located in the fuse box, as a blown fuse is a common and easily rectifiable problem. Next, examine the cruise control buttons on your steering wheel to ensure they are functioning correctly, as faulty buttons can disrupt the system's operation. Utilizing an OBD-II scanner to check for error codes can provide valuable insights into any underlying issues, allowing you to pinpoint specific malfunctions. Additionally, inspect the speed sensors, as they play a crucial role in the cruise control system; any faults here can prevent engagement. Pay attention to wiring connections, looking for any loose or damaged wires that could affect performance. Finally, test the cruise control module to confirm its functionality, as a malfunctioning module can lead to significant issues. If these steps do not resolve the problem, it may be time to consult a professional mechanic or an authorized Mercedes-Benz service center for further assistance. This methodical approach not only helps in identifying the issue but also ensures that you address the simplest problems first, potentially saving time and effort.

What are the common problems that could cause the cruise control to malfunction in a 2023 Mercedes-Benz GLC43 AMG?

When troubleshooting cruise control malfunctions in a 2023 Mercedes-Benz GLC43 AMG, it's essential to understand the common problems that may arise. One significant issue could be sensor malfunctions, as the sensors responsible for monitoring speed and distance are crucial for the system's operation. If these sensors fail, the cruise control may not maintain the desired speed or distance from other vehicles. Additionally, electrical problems such as faulty wiring or blown fuses can disrupt the system's functionality, making it vital to inspect all electrical connections for security and corrosion. Software glitches are another potential culprit; modern vehicles rely heavily on software, and any bugs may necessitate a software update or reset to restore proper function. Mechanical failures, particularly in the cruise control module or actuator, can also hinder performance, as these components directly control throttle and speed adjustments. Furthermore, issues with the brake light switch can prevent the cruise control from disengaging when the brake pedal is pressed, leading to dangerous situations. Lastly, vacuum leaks in the engine can impact the system's ability to maintain a steady speed, so checking for and repairing any leaks is advisable. By being aware of these common problems, drivers can take proactive steps to ensure their cruise control system operates effectively and safely.

How urgent is it to address the malfunctioning cruise control in my 2023 Mercedes-Benz GLC43 AMG?

Addressing a malfunctioning cruise control in your 2023 Mercedes-Benz GLC43 AMG is not just a matter of convenience; it is a critical safety concern that requires immediate attention. When cruise control fails, it can lead to unpredictable vehicle behavior, such as sudden acceleration or deceleration, which significantly increases the risk of accidents. Moreover, neglecting this issue can compromise your vehicle's overall performance, potentially leading to more severe mechanical problems that could affect the engine and other vital components. From a financial perspective, timely repairs can save you from incurring higher costs associated with extensive damage that could have been avoided. Additionally, ensuring that all systems in your vehicle are functioning correctly is essential for legal compliance and adherence to road safety regulations. Therefore, it is imperative to prioritize the repair of your cruise control system to maintain safety, performance, and compliance on the road.

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