Mercedes-Benz G63 AMG Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your Mercedes-Benz G63 AMG and How to Fix Them

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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
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25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a Mercedes-Benz G63 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 Mercedes-Benz G63 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.

Troubleshooting Cruise Control Issues in a Mercedes-Benz G63 AMG

When troubleshooting cruise control issues in a Mercedes-Benz G63 AMG, it's essential to adopt a systematic diagnostic approach. Start by checking the brake pedal switch, as a defective switch is a common culprit that can prevent the cruise control from engaging. Next, ensure that the vehicle's battery is fully charged, as a dead battery can disrupt electrical systems, including cruise control. If these initial checks do not resolve the issue, inspect the ABS wheel speed sensor, as its failure can trigger warning lights and affect cruise control functionality. Additionally, keep an eye on the engine and transmission; any warning lights or performance issues may indicate underlying problems that could disable the cruise control as a safety precaution. Lastly, consider the condition of the engine sensors, particularly the crankshaft position sensor, which can impact overall vehicle performance. If all else fails, investigate the cruise control controller for old solder connections, as reworking these connections may restore functionality. By following this methodical approach, you can effectively diagnose and address cruise control issues in your G63 AMG, ensuring a smoother driving experience.

What Could Cause Cruise Control Malfunctions in a Mercedes-Benz G63 AMG?

When diagnosing cruise control malfunctions in a Mercedes-Benz G63 AMG, it's essential to consider several common problems that could be affecting the system. One of the primary culprits is a failed control module, which can disrupt the communication between the cruise control system and the vehicle's engine management. Additionally, sensor failures, particularly with the throttle position sensor, can lead to erratic behavior; a malfunctioning sensor may cause the engine to receive incorrect signals, resulting in poor throttle response and even black exhaust emissions. Furthermore, issues with the cruise control switch itself can prevent the system from engaging or disengaging properly. It's also worth noting that certain G63 AMG models have been subject to recalls due to malfunctions in the Electronic Stability Program (ESP), which can interfere with the cruise control functionality when using features like Distronic Plus. By understanding these potential failure modes, DIY enthusiasts can better troubleshoot and address cruise control issues in their vehicles.

Why is the Cruise Control Not Working in a Mercedes-Benz G63 AMG?

When the cruise control in your Mercedes-Benz G63 AMG is malfunctioning, it’s crucial to address the issue promptly to ensure your safety and the vehicle's performance. Ignoring symptoms such as unresponsive controls or sudden disengagement can lead to more severe problems, including potential safety hazards while driving. Common causes for cruise control failure include issues with the control module, sensors, or switches, which can disrupt the system's functionality. Additionally, throttle actuation problems and ABS sensor failures can also play a significant role in disabling cruise control, affecting other critical systems like stability control and ABS. Given the complexity of these components, it is advisable to consult a qualified professional who can accurately diagnose and repair the underlying issues, preventing further damage and ensuring that your cruise control operates safely and effectively.

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