2011 Mercedes-Benz GL350 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2011 Mercedes-Benz GL350 and How to Fix Them

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Reviewed by
Andrew Hajjar
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 2011 Mercedes-Benz GL350 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 2011 Mercedes-Benz GL350 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 2011 Mercedes-Benz GL350?

To effectively diagnose a cruise control issue in a 2011 Mercedes-Benz GL350, it's essential to adopt a systematic diagnostic approach that begins with the simplest solutions before progressing to more complex assessments. Start by checking the cruise control fuse, as a blown fuse can easily disrupt the system's functionality. Next, inspect the cruise control buttons on the steering wheel to ensure they are operational, since faulty buttons can lead to engagement problems. Utilizing a diagnostic scanner to check for error codes from the vehicle's onboard computer can provide valuable insights into specific issues affecting the cruise control system. Additionally, verify the functionality of the speed sensors, as they are critical for the cruise control to operate correctly. It's also important to examine the wiring connections associated with the cruise control system for any signs of damage or corrosion, as poor connections can hinder performance. Finally, testing the cruise control module itself will help determine if it is functioning properly, as a malfunctioning module can prevent the system from engaging altogether. By following this structured approach, you can effectively identify and troubleshoot cruise control issues in your vehicle.

What are the common problems that could cause the cruise control to stop working in a 2011 Mercedes-Benz GL350?

When troubleshooting the cruise control system in a 2011 Mercedes-Benz GL350, it's essential to understand the common problems that may lead to its failure. One of the primary culprits is a faulty brake light switch, which can prevent the cruise control from engaging by failing to signal that the brake pedal is pressed. Additionally, issues with the speed sensor can result in inaccurate speed readings, causing the system to malfunction or disengage unexpectedly. Another potential issue is vacuum leaks within the cruise control system, which can disrupt its ability to maintain a set speed. A defective cruise control module may also be at fault, leading to a lack of response to commands or an inability to hold speed. Lastly, electrical problems, such as blown fuses or wiring issues, can significantly impact the functionality of the cruise control. By identifying and addressing these common problems, you can effectively troubleshoot and restore the cruise control system in your vehicle.

How urgent is it to address the malfunctioning cruise control in a 2011 Mercedes-Benz GL350?

Addressing a malfunctioning cruise control system in a 2011 Mercedes-Benz GL350 is of utmost importance due to the significant safety risks it poses. When cruise control fails, it can lead to unexpected acceleration or deceleration, which can result in dangerous driving situations and increase the likelihood of accidents. Promptly repairing this issue not only safeguards your safety but also helps prevent further complications that could arise from neglecting the problem. A malfunctioning system may cause additional strain on other vehicle components, leading to more extensive and costly repairs down the line. Moreover, a properly functioning cruise control enhances your driving experience, providing convenience and comfort during long trips. Therefore, it is crucial to prioritize the repair of your cruise control system to ensure both your safety and the longevity of your vehicle.

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2011 Mercedes-Benz GL350 Cruise Control Issues & Solutions