2023 Mercedes-Benz GLB35 AMG Cruise Control Isn't Working

Fixing Cruise Control Issues in the 2023 Mercedes-Benz GLB35 AMG

Find Repair Location
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 2023 Mercedes-Benz GLB35 AMG 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 GLB35 AMG 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 non-functioning cruise control in my 2023 Mercedes-Benz GLB35 AMG?

To effectively diagnose the non-functioning cruise control in your 2023 Mercedes-Benz GLB35 AMG, begin with the simplest checks to avoid unnecessary complications. Start by inspecting the cruise control fuse in the fuse box, as a blown fuse is a common and easily fixable issue. Next, examine the cruise control buttons on your steering wheel for any signs of damage or sticking, as these can hinder the system's operation. If these initial checks do not resolve the problem, proceed to verify the speed sensor's functionality, since a malfunction here can disrupt the cruise control's performance. Utilizing a diagnostic scanner to check for error codes can provide valuable insights into any underlying issues. Additionally, ensure that the brake and clutch switches are functioning correctly, as faulty switches can prevent the cruise control from engaging. Finally, inspect the wiring and connections associated with the cruise control system for any damage or corrosion, as poor connections can lead to system failures. By following this structured approach, you can systematically identify and address the root cause of your cruise control issues.

What are the common problems that could cause the cruise control to malfunction in a 2023 Mercedes-Benz GLB35 AMG?

When diagnosing cruise control malfunctions in a 2023 Mercedes-Benz GLB35 AMG, it's essential to consider several common problems that may arise. One frequent issue is sensor malfunction, where the sensors responsible for monitoring speed and distance may fail, leading to erratic cruise control behavior. Additionally, electrical faults, such as damaged wiring or loose connectors, can disrupt the system's functionality, making it crucial to inspect these components for any signs of wear or damage. Software glitches can also play a role, so ensuring that the vehicle's software is up to date can help mitigate this problem. Another area to check is for vacuum leaks, which can impair the system's ability to maintain speed effectively. Lastly, a faulty brake light switch can prevent the cruise control from engaging or disengaging as intended, so testing this switch is a vital step in troubleshooting. By addressing these issues promptly, you can ensure that your cruise control system operates smoothly and safely.

How urgent is it to address the malfunctioning cruise control in my 2023 Mercedes-Benz GLB35 AMG?

Addressing the malfunctioning cruise control in your 2023 Mercedes-Benz GLB35 AMG is of utmost importance due to the safety risks it poses. A malfunction can lead to unexpected acceleration or deceleration, which can create hazardous driving conditions for you and others on the road. Moreover, timely repairs not only ensure the cruise control system operates as intended, enhancing your driving comfort and convenience, but also help prevent further complications that could arise from neglecting the issue. Ignoring the problem may result in increased fuel consumption due to inconsistent speed control, and could lead to additional wear and tear on your vehicle's components, ultimately resulting in more costly repairs. Therefore, it is crucial to prioritize the repair of your cruise control system to maintain safety, optimize performance, and avoid unnecessary expenses.

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.

2023 Mercedes-Benz GLB35 AMG Cruise Control Issues