2018 Mercedes-Benz GLE550e Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2018 Mercedes-Benz GLE550e and How to Fix Them

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Reviewed by
Bo Fader
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 2018 Mercedes-Benz GLE550e 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 2018 Mercedes-Benz GLE550e 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 steps should I take to diagnose the non-functioning cruise control in my 2018 Mercedes-Benz GLE550e?

To effectively diagnose the non-functioning cruise control in your 2018 Mercedes-Benz GLE550e, start with a systematic approach that prioritizes simpler checks before moving on to more complex diagnostics. Begin by inspecting the cruise control fuse in the fuse box; a blown fuse is an easy fix that can often resolve the issue. Next, examine the cruise control buttons on your steering wheel for any signs of sticking or damage, as these can hinder functionality. If the buttons are in good condition, proceed to verify the speed sensors, as faulty sensors can disrupt the cruise control system's operation. Utilizing an OBD-II scanner to check for error codes can provide valuable insights into any underlying issues. Additionally, ensure that the brake and clutch switches are functioning properly, as malfunctioning switches can prevent the cruise control from engaging. Finally, inspect the wiring and connections for any damage or corrosion, ensuring that everything is secure. If these steps do not resolve the issue, it may be time to consult a professional mechanic or an authorized Mercedes-Benz service center for further assistance. This methodical approach not only helps in identifying the problem but also empowers you to tackle the issue with confidence.

What are the common problems that could cause the cruise control to stop working in a 2018 Mercedes-Benz GLE550e?

When troubleshooting the cruise control system in a 2018 Mercedes-Benz GLE550e, it's essential to understand the common problems that may lead to its malfunction. One prevalent issue is a faulty speed sensor, which can disrupt the system's ability to accurately gauge the vehicle's speed, preventing the cruise control from engaging or maintaining the desired speed. Additionally, problems with the brake light switch can cause the cruise control to disengage unexpectedly, as this switch is designed to interrupt the system when the brake pedal is pressed. Another potential culprit is a malfunctioning throttle actuator, which plays a crucial role in controlling the engine's throttle and can hinder the cruise control's performance. Furthermore, a defective cruise control module may disrupt communication between various system components, leading to operational failures. Lastly, electrical issues such as wiring problems or blown fuses can also impede the cruise control's functionality. By identifying and addressing these common issues, DIY enthusiasts can effectively restore the cruise control system to working order.

How urgent is it to address the malfunctioning cruise control in a 2018 Mercedes-Benz GLE550e?

Addressing a malfunctioning cruise control system in a 2018 Mercedes-Benz GLE550e is of utmost importance due to the significant safety risks it poses. A malfunction can lead to unexpected acceleration or deceleration, which can result in dangerous driving conditions and increase the likelihood of accidents. Furthermore, neglecting this issue can adversely affect your overall driving experience, making it inconvenient and frustrating to operate your vehicle. Additionally, a faulty cruise control system may lead to inconsistent speed control, which can inadvertently increase fuel consumption, adding to your expenses. By addressing the malfunction promptly, you not only enhance your safety on the road but also protect your vehicle from potential further damage, ultimately saving on costly repairs in the future. Therefore, it is crucial to take immediate action to ensure both your safety and the longevity of your vehicle.

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2018 Mercedes-Benz GLE550e Cruise Control Issues & Repairs