2007 Mercedes-Benz G55 AMG Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2007 Mercedes-Benz G55 AMG and How to Fix Them

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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 2007 Mercedes-Benz G55 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 2007 Mercedes-Benz G55 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 are the initial diagnostic steps to troubleshoot the non-functional cruise control in a 2007 Mercedes-Benz G55 AMG?

When troubleshooting the non-functional cruise control in a 2007 Mercedes-Benz G55 AMG, it's essential to adopt a systematic diagnostic approach that prioritizes simpler checks before delving into more complex issues. Start by inspecting the cruise control fuse in the fuse box, as a blown fuse can often be the simplest explanation for the malfunction. Next, verify the functionality of the cruise control switch located on the steering wheel, ensuring it engages properly. Following this, examine the speed sensors, which are critical for the cruise control system's operation; any malfunction here can disrupt the system's performance. Utilizing a diagnostic scanner to check for error codes can provide valuable insights into underlying issues, guiding your next steps. Additionally, inspect the wiring connections associated with the cruise control system for any loose or damaged wires that could hinder functionality. If your vehicle employs a vacuum-based cruise control system, checking the vacuum lines for leaks or blockages is crucial, as these can significantly impact performance. By methodically following these steps, you can effectively identify and address the root cause of the cruise control issue in your vehicle.

What are the common problems that could cause the cruise control to stop working in a 2007 Mercedes-Benz G55 AMG?

When dealing with cruise control issues in a 2007 Mercedes-Benz G55 AMG, it's essential to understand the common problems that may be at play. One frequent culprit is a faulty brake light switch, which can prevent the cruise control from engaging if it fails to signal when the brake pedal is pressed. Additionally, speed sensor malfunctions can disrupt the system, as accurate speed readings are crucial for cruise control functionality. Another potential issue is vacuum leaks within the cruise control system, which can lead to erratic behavior or complete failure. A defective cruise control module may also be responsible for the malfunction, as it is the central component that controls the system. Lastly, electrical problems, such as blown fuses or damaged wiring, can significantly impact the cruise control's operation. By systematically checking these areas, DIYers can effectively troubleshoot and resolve cruise control problems, restoring functionality to their vehicle.

How urgent is it to address the non-functioning cruise control in a 2007 Mercedes-Benz G55 AMG?

Addressing the non-functioning cruise control in a 2007 Mercedes-Benz G55 AMG should be considered a priority, even if it may not seem as urgent as other mechanical issues. While the immediate safety risk may be minimal, neglecting this problem can lead to more significant complications down the line. Cruise control is designed to enhance driving comfort and efficiency, particularly on long journeys, and its absence can lead to increased driver fatigue and discomfort. Moreover, the underlying cause of the malfunction could be indicative of more serious mechanical or electrical issues that, if left unresolved, might escalate into costly repairs. By addressing the cruise control issue promptly, you not only restore a valuable feature of your vehicle but also safeguard against potential damage to other systems, ultimately saving time and money in the long run. Therefore, it is advisable to take action sooner rather than later to ensure the continued functionality and safety of your G55 AMG.

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