2007 Mercedes-Benz G500 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2007 Mercedes-Benz G500 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
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25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a 2007 Mercedes-Benz G500 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 G500 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 steps to diagnose the cruise control issue in a 2007 Mercedes-Benz G500?

To effectively diagnose cruise control issues in a 2007 Mercedes-Benz G500, begin with the simplest solutions before moving to more intricate assessments. Start by checking the cruise control fuse, as a blown fuse can easily disrupt functionality. If the fuse is intact, inspect the cruise control switch on the steering wheel to ensure it is operating correctly, as a malfunctioning switch can lead to problems. Next, utilize a diagnostic scanner to check for any error codes that may indicate specific issues within the cruise control system. Following this, verify the functionality of the speed sensors, which are essential for the cruise control to engage and disengage properly. Additionally, conduct a thorough inspection of the wiring and connections associated with the cruise control system, looking for any signs of damage or corrosion that could affect performance. Finally, if all previous checks are clear, test the cruise control module itself to confirm it is functioning as intended. By following this structured approach, you can systematically identify and potentially resolve the cruise control issues in your vehicle.

What are the common problems that could cause the cruise control to stop working in a 2007 Mercedes-Benz G500?

When troubleshooting the cruise control system in a 2007 Mercedes-Benz G500, it's crucial to recognize the common issues that may lead to its malfunction. A primary concern is a faulty brake light switch, which can inhibit the cruise control from engaging, as the system is designed to deactivate when the brake pedal is pressed. Additionally, problems with the speed sensor can disrupt the system's ability to maintain speed, since it relies on accurate readings for proper functionality. Vacuum leaks within the cruise control system can also interfere with its operation, leading to erratic behavior. Furthermore, a defective cruise control module may be at fault, as it is integral to the system's overall performance. Lastly, electrical issues, such as blown fuses or wiring problems, can significantly affect the cruise control's operation. By systematically identifying and addressing these common problems, DIY enthusiasts can effectively troubleshoot and restore the cruise control system in their G500, ensuring a smoother driving experience.

How urgent is it to repair the non-functioning cruise control in a 2007 Mercedes-Benz G500?

When it comes to the urgency of repairing the non-functioning cruise control in your 2007 Mercedes-Benz G500, several critical factors come into play. First and foremost, safety is paramount; a malfunctioning cruise control system can lead to increased driver fatigue and distraction, particularly during long drives, which may compromise your ability to maintain focus on the road. Additionally, the comfort and convenience that cruise control offers cannot be overlooked, as it significantly enhances the driving experience, especially on extended journeys. Without it, you may find yourself constantly adjusting your speed, which can be tiring and less enjoyable. Furthermore, if you ever plan to sell or trade in your vehicle, a fully operational cruise control system can be a key selling point that enhances your car's resale value. Therefore, while the urgency may vary based on personal circumstances, addressing the cruise control issue promptly is advisable to ensure your safety, improve driving comfort, and protect your investment in the vehicle.

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