2019 Mercedes-Benz GLC350e Cruise Control Isn't Working

Fixing Cruise Control Issues in 2019 Mercedes-Benz GLC350e

Find Repair Location
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
0%
25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a 2019 Mercedes-Benz GLC350e 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 2019 Mercedes-Benz GLC350e 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 steps to diagnose the cruise control issue in a 2019 Mercedes-Benz GLC350e?

To effectively diagnose cruise control issues in your 2019 Mercedes-Benz GLC350e, begin with the simplest solutions. Start by checking the cruise control fuse, as a blown fuse can disrupt the entire system. Next, inspect the cruise control buttons on the steering wheel for any signs of sticking or malfunction, as these can prevent the system from engaging properly. If these initial checks do not resolve the issue, utilize a diagnostic scanner to identify any error codes that may indicate specific problems within the cruise control system. Additionally, verify the functionality of the vehicle's speed sensors, since faulty sensors can directly impact cruise control performance. Finally, take a moment to inspect the wiring connections associated with the cruise control system, ensuring there are no loose or damaged wires that could hinder operation. By following this structured approach, you can efficiently diagnose and address cruise control issues in your vehicle.

What are the common problems that could cause the cruise control to stop working in a 2019 Mercedes-Benz GLC350e?

When the cruise control in your 2019 Mercedes-Benz GLC350e ceases to function, it can be frustrating, but understanding the common problems can help you diagnose the issue. One frequent culprit is a faulty speed sensor, which is essential for the cruise control system to maintain the desired speed accurately. Additionally, a malfunctioning brake light switch can cause the cruise control to disengage unexpectedly, even when the brakes are not applied. Another potential issue lies with the throttle actuator, which may disrupt communication between the cruise control system and the engine, leading to operational problems. Electrical issues, such as blown fuses or wiring faults, can also hinder the cruise control's performance, as can software glitches within the vehicle's computer system. By familiarizing yourself with these common problems, you can take the first steps toward troubleshooting and potentially resolving the cruise control malfunction in your vehicle.

How urgent is it to address the non-functioning cruise control in a 2019 Mercedes-Benz GLC350e?

When it comes to the non-functioning cruise control in a 2019 Mercedes-Benz GLC350e, understanding the urgency of the situation is crucial for any DIY enthusiast. While the absence of cruise control may not seem like an immediate safety hazard, it can significantly affect your driving experience, especially during long trips where maintaining a consistent speed is essential for comfort and fuel efficiency. Ignoring this issue could lead to more complex mechanical or electrical problems down the line, which may result in costly repairs. Therefore, it is advisable to investigate the root cause of the malfunction sooner rather than later. By doing so, you not only enhance your vehicle's performance but also ensure a safer and more enjoyable driving experience. Taking prompt action can prevent minor inconveniences from escalating into major issues, making it a wise choice for any responsible vehicle owner.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.