2023 Mercedes-Benz GLB250 Cruise Control Isn't Working

Fixing Cruise Control Issues in the 2023 Mercedes-Benz GLB250

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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 2023 Mercedes-Benz GLB250 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 2023 Mercedes-Benz GLB250 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.

A faulty cruise control module will simply result in deactivation of cruise control settings. This is because a detected error in the cruise control system could lead to hazardous driving conditions, so the module will be disabled, and the cruise control system warning light will be displayed. This will be a different message depending on make and model, and a warning light or message may be displayed on the driver instrument cluster.

What steps should I take to diagnose the cruise control issue in my 2023 Mercedes-Benz GLB250?

To effectively diagnose the cruise control issue in your 2023 Mercedes-Benz GLB250, start with a systematic approach that prioritizes simpler checks before moving on to more complex diagnostics. Begin by inspecting the cruise control fuse, as a blown fuse is a common and easily fixable problem that can disrupt the system's functionality. Next, examine the cruise control buttons on your steering wheel to ensure they are operational, as faulty buttons can lead to unresponsive controls. If these initial checks do not reveal the issue, utilize an OBD-II scanner to identify any error codes that may indicate specific malfunctions within the cruise control system. Following this, assess the speed sensors, which are vital for the cruise control's performance, ensuring they are functioning correctly. Additionally, inspect the wiring connections associated with the cruise control system for any signs of damage or loose connections that could be causing the malfunction. Finally, if all else fails, test the cruise control module itself, as a defective module can be the root cause of the problem. By following this structured diagnostic approach, you can efficiently identify and address the underlying issue affecting your vehicle's cruise control system.

What are the common problems that could cause the cruise control to stop working in a 2023 Mercedes-Benz GLB250?

When the cruise control in your 2023 Mercedes-Benz GLB250 ceases to function, it’s essential to consider several common problems that could be at play. One of the primary culprits is a faulty speed sensor, which is crucial for the system to accurately gauge the vehicle's speed; if this sensor malfunctions, the cruise control may fail to engage or maintain the desired speed. Additionally, issues with the brake light switch can disrupt the cruise control system, as it is designed to deactivate when the brakes are applied. Another potential issue is a malfunctioning throttle actuator, which can hinder the cruise control's ability to adjust the throttle position effectively. Furthermore, a defective cruise control module may prevent the system from responding to commands, leading to complete non-functionality. Lastly, electrical problems such as wiring issues or blown fuses can interrupt communication between the various components of the cruise control system. By understanding these common problems, you can better diagnose the issue and determine whether a DIY fix is feasible or if professional assistance is required.

How urgent is it to address the malfunctioning cruise control in a 2023 Mercedes-Benz GLB250?

When it comes to a malfunctioning cruise control system in your 2023 Mercedes-Benz GLB250, urgency is key. Ignoring this issue can lead to unexpected acceleration or deceleration, significantly increasing the risk of accidents on the road. The safety of you and your passengers is paramount, and a faulty cruise control can compromise that. Additionally, delaying repairs may result in more extensive damage to the vehicle's systems, leading to costly repairs down the line. Beyond safety and financial implications, a malfunctioning cruise control detracts from the overall driving experience, making it less convenient to use this feature. Therefore, it is crucial to address any cruise control malfunctions promptly to ensure your vehicle operates safely and efficiently.

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