2020 Mercedes-Benz GLE450 Cruise Control Isn't Working

Fixing Cruise Control Issues in Your 2020 Mercedes-Benz GLE450

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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 2020 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 2020 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.

What are the initial diagnostic steps to troubleshoot the non-functioning cruise control in a 2020 Mercedes-Benz GLE450?

When troubleshooting the non-functioning cruise control in your 2020 Mercedes-Benz GLE450, start with the simplest solutions before moving on to more complex diagnostics. Begin by checking the cruise control fuse; a blown or damaged fuse can easily disrupt the system's functionality. Next, inspect the cruise control switch to ensure it is operating correctly, as a faulty switch can prevent activation. If these components are in good condition, turn your attention to the cruise control module, which may need to be examined for any signs of malfunction. Additionally, the vehicle's speed sensors are critical for cruise control operation, so verify their condition to rule out any issues. Finally, utilize an onboard diagnostic scanner to check for any error codes that may provide insight into the problem. By following this structured approach, you can effectively narrow down the potential causes of your cruise control issues and take the necessary steps toward a solution.

What are the common problems that could cause the cruise control to stop working in a 2020 Mercedes-Benz GLE450?

When troubleshooting the cruise control system in a 2020 Mercedes-Benz GLE450, it's essential to consider several common issues that could be at play. A faulty speed sensor is often a primary culprit, as it plays a crucial role in relaying the vehicle's speed to the cruise control system. If this sensor malfunctions, the system may fail to engage or maintain the desired speed. Additionally, the brake light switch can also cause problems; if it is defective, it may inadvertently signal the cruise control to disengage whenever the brake pedal is pressed. Another potential issue lies with the throttle actuator, which is responsible for regulating engine communication with the cruise control system. If this component is malfunctioning, it can disrupt the system's operation. Furthermore, a defective cruise control module may prevent the system from receiving the necessary signals to function correctly. Lastly, electrical problems such as wiring issues or blown fuses can also interfere with the cruise control's performance. By understanding these common problems, DIYers can better diagnose and address issues with their vehicle's cruise control system.

How urgent is it to address the malfunctioning cruise control in a 2020 Mercedes-Benz GLE450?

Addressing a malfunctioning cruise control system in your 2020 Mercedes-Benz GLE450 is not just a matter of convenience; it is a critical safety concern that requires immediate attention. A malfunction can lead to unexpected acceleration or deceleration, significantly increasing the risk of accidents on the road. Moreover, the enjoyment and ease of driving are compromised when this feature is unreliable, detracting from the overall driving experience. Ignoring these symptoms can also result in further damage to the vehicle's systems, potentially leading to expensive repairs down the line. Therefore, it is essential to prioritize the resolution of cruise control issues to ensure both your safety and the longevity of your vehicle.

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