Mercedes-Benz GLE450 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your Mercedes-Benz GLE450 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
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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 GLE450 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 GLE450 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.

Troubleshooting Cruise Control Issues in a Mercedes-Benz GLE450

When troubleshooting cruise control issues in your Mercedes-Benz GLE450, it's crucial to follow a methodical diagnostic approach that prioritizes simpler fixes before delving into more complex problems. Begin by checking the ABS wheel speed sensors, as a fault here can not only disable the cruise control but also impact other vital systems like ABS and stability control. Next, assess the control module, throttle, and related sensors to ensure they are operating correctly, since these components are essential for cruise control functionality. Pay attention to the spiral cable within the steering wheel; if it's damaged, it can hinder communication between the cruise control switch and the system. Additionally, inspect all electrical connections for any faults, as issues in this area can lead to operational failures. The actuator located under the hood should also be evaluated for proper resistance levels to prevent potential damage to the controller. Lastly, examine the cruise control button for any dirt or damage, as this can obstruct the system from engaging. By systematically addressing these areas, you can effectively identify and resolve the issues affecting your cruise control system. If these troubleshooting steps do not resolve the problem, seeking professional assistance may be necessary for a more in-depth diagnosis.

What to Check When Cruise Control Isn't Working in a Mercedes-Benz GLE450?

When your Mercedes-Benz GLE450's cruise control isn't functioning properly, there are several common problems you can investigate to potentially resolve the issue. Start by examining the control module, as this is the brain of the cruise control system and any faults here can lead to a complete failure. Next, check the speed sensor, which plays a crucial role in relaying speed data; if it's malfunctioning, the cruise control may not engage. The throttle is another critical component; a faulty throttle can disrupt the system's ability to maintain speed. Additionally, inspect the brake pedal switch, as a defective switch can inadvertently signal that the brakes are engaged, disabling the cruise control. Don't overlook the battery, as a weak or dead battery can affect various electronic systems in your vehicle, including cruise control. Lastly, the ABS wheel speed sensor is worth checking, as issues here can not only impact cruise control but also trigger warning lights for the ABS and ESP systems. By systematically checking these components, you can diagnose and potentially fix the cruise control issue in your GLE450 before seeking professional help.

Why is the Cruise Control Not Working in a Mercedes-Benz GLE450?

When the cruise control in your Mercedes-Benz GLE450 is not functioning, it’s crucial to understand the urgency of the situation. Ignoring symptoms such as unresponsive controls or sudden disengagement can pose significant safety risks, especially during long drives where maintaining speed is essential. Common issues like a failed control module, malfunctioning sensors, or faulty switches can disrupt the cruise control system, leading to unpredictable driving conditions. Additionally, problems with throttle actuation or ABS sensor failures can further complicate the situation, potentially resulting in more extensive damage if left unaddressed. Therefore, it is vital to diagnose and resolve these issues promptly to ensure not only the functionality of your cruise control but also the overall safety and performance of your vehicle. Taking action sooner rather than later can save you from costly repairs and enhance your driving experience.

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