2024 Mercedes-Benz GLS450 Cruise Control Isn't Working

Fixing Cruise Control Issues in the 2024 Mercedes-Benz GLS450

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Reviewed by
Devin Cabugcal
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 2024 Mercedes-Benz GLS450 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 2024 Mercedes-Benz GLS450 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 2024 Mercedes-Benz GLS450?

To effectively diagnose the non-functioning cruise control in your 2024 Mercedes-Benz GLS450, begin with a systematic approach that prioritizes simpler checks before moving on to more complex diagnostics. Start by inspecting the cruise control fuse located in the fuse box, as a blown fuse is a common and easily fixable issue that can halt cruise control functionality. Next, examine the cruise control buttons on your steering wheel to ensure they are operational, as malfunctioning buttons can prevent the system from engaging. Following this, verify the speed sensors, as faulty sensors can disrupt the cruise control's ability to maintain speed. It's also essential to check the brake pedal switch, which is critical for cruise control operation; a defective switch can disable the system entirely. If these initial checks do not reveal the problem, utilize a diagnostic scanner to identify any error codes that may indicate specific issues within the cruise control system. Should these steps fail to resolve the issue, consulting a professional mechanic or an authorized Mercedes-Benz service center is recommended for a comprehensive diagnosis and repair. By following this structured diagnostic approach, you can efficiently identify and address the underlying cause of your cruise control malfunction.

What are the common problems that could cause the cruise control to malfunction in a 2024 Mercedes-Benz GLS450?

When dealing with cruise control malfunctions in a 2024 Mercedes-Benz GLS450, it's essential to understand the various common problems that may arise. One significant issue is faulty speed sensors, which can lead to erratic cruise control behavior or complete failure to maintain speed. Additionally, a malfunctioning brake light switch can prevent the system from engaging or cause it to disengage unexpectedly, creating safety concerns. Throttle control issues, such as a stuck throttle or problems with the throttle position sensor, can also hinder the cruise control's ability to function correctly. Electrical problems, including blown fuses or wiring issues, may disrupt the system's operation, while vacuum leaks can affect the necessary pressure for proper functioning. Lastly, software glitches in the vehicle's onboard computer may require updates or reprogramming to resolve. By being aware of these potential issues, DIYers can take proactive steps to troubleshoot and maintain the cruise control system effectively.

How urgent is it to address the malfunctioning cruise control in a 2024 Mercedes-Benz GLS450?

Addressing a malfunctioning cruise control in your 2024 Mercedes-Benz GLS450 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 that cruise control offers can be severely compromised, detracting from your overall driving experience. Ignoring these symptoms can also lead to more extensive damage to your vehicle's systems, resulting in costly 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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