2014 Mercedes-Benz ML63 AMG Cruise Control Isn't Working

Fixing Cruise Control Issues in 2014 Mercedes-Benz ML63 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 2014 Mercedes-Benz ML63 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 2014 Mercedes-Benz ML63 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.

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.

What steps should I take to diagnose the non-functioning cruise control in my 2014 Mercedes-Benz ML63 AMG?

To effectively diagnose the non-functioning cruise control in your 2014 Mercedes-Benz ML63 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 issue. Next, examine the cruise control buttons on the steering wheel to ensure they are operational, as faulty buttons can hinder engagement. Following this, verify the functionality of the speed sensors, since any malfunction here can disrupt the cruise control system. Utilizing a diagnostic scanner to check for error codes can provide valuable insights into any underlying issues. Additionally, assess the brake and clutch switches, as these components must function correctly to enable cruise control. Finally, inspect the wiring and connections associated with the cruise control system for any signs of damage or loose connections. By methodically following these steps, you can accurately identify the root cause of the cruise control malfunction and take appropriate action to resolve it.

What are the common problems that could cause the cruise control to stop working in a 2014 Mercedes-Benz ML63 AMG?

When the cruise control in your 2014 Mercedes-Benz ML63 AMG ceases to function, it can be frustrating, but understanding the common problems can help you diagnose the issue effectively. One of the primary culprits is a faulty brake light switch, which can prevent the cruise control from engaging if it fails to signal that the brake pedal is not pressed. Additionally, a malfunctioning speed sensor can disrupt the system's ability to maintain a steady speed, leading to cruise control failure. Another potential issue is with the throttle actuator; wear and tear or electrical faults here can significantly impact functionality. Furthermore, a defective cruise control module may render the system inoperable, necessitating repair or replacement. Lastly, don’t overlook electrical issues, such as blown fuses or wiring problems, which can also impede cruise control operation. By systematically checking these components, you can identify and address the root cause of the malfunction, restoring your vehicle's cruise control system to working order.

How urgent is it to address the non-functioning cruise control in a 2014 Mercedes-Benz ML63 AMG?

When it comes to the non-functioning cruise control in a 2014 Mercedes-Benz ML63 AMG, understanding the urgency of the situation is crucial for any DIY enthusiast. While it may not seem like an immediate emergency, neglecting this issue can lead to more significant problems down the line. A malfunctioning cruise control system often indicates underlying electronic or sensor issues that could affect other critical vehicle systems, potentially compromising safety and performance. By addressing the problem promptly, you not only enhance your driving experience by restoring the convenience of cruise control but also mitigate the risk of further damage that could result from ignoring the symptoms. Therefore, it is wise to diagnose and repair the cruise control system as soon as possible, either through self-diagnosis or by consulting a qualified mechanic, ensuring that your vehicle remains safe and reliable on the road.

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