2016 Mercedes-Benz GL450 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2016 Mercedes-Benz GL450 and How to Fix Them

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Reviewed by

Aisha

Written by RepairPal Car Genius

Updated January 14, 2025

30% chance it's the

Sensor

25% chance it's the

Control Module

25% chance it's the

Throttle

20% chance it's

Something else

The most common reasons a 2016 Mercedes-Benz GL450 cruise control isn't working are failed control module, sensor or switch issues, or throttle actuation problems.

Sensor: A faulty sensor can lead to incorrect readings, causing issues with engine performance or triggering warning lights on the dashboard.
Control Module: A faulty control module can result in 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 acceleration and poor engine 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.

What are the best Mercedes-Benz repair shops?

RepairPal Certified shops can diagnose and repair your 2016 Mercedes-Benz GL450 electronics and electrical issues. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

How much does it cost to fix a 2016 Mercedes-Benz GL450 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.

The cruise control switch can cause complete failure of the cruise control feature, but in a lucky scenario only partial functionality will be lost. This means that the cruise control may come on, but that it will not increase in speed automatically, or the cancel button does not work leading the driver to cancel cruise control with the foot brake. In some vehicles, the cruise control light may illuminate, or a warning message may be displayed due to lack of functionality.

How urgent is it to repair the non-functioning cruise control in a 2016 Mercedes-Benz GL450?

Repairing the non-functioning cruise control in your 2016 Mercedes-Benz GL450 should be considered a priority, even if it may not seem like an immediate emergency. A malfunctioning cruise control system can lead to significant inconveniences during long drives, making it difficult to maintain a consistent speed and increasing driver fatigue. Moreover, neglecting this issue could result in further complications, such as affecting the vehicle's acceleration and speedometer accuracy, which are critical for safe driving. By addressing the cruise control problem promptly, you not only enhance your driving comfort but also safeguard the overall functionality and safety of your vehicle. Ignoring these symptoms could lead to more severe issues down the line, making it essential to take action sooner rather than later to ensure a smooth and secure driving experience.

Related 2016 Mercedes-Benz GL450 Problems

Read about related problems experienced by other Mercedes-Benz GL450 drivers like you.

Mercedes-Benz GL450 air conditioning intermittently fails to cool and makes noise after compressor replacement

Some Mercedes-Benz GL450 owners report experiencing intermittent cooling issues even after replacing the air conditioning compressor, which may indicate underlying system problems that need to be addressed. Additionally, some owners notice noise coming from the air conditioning system post-replacement, suggesting potential complications or improper installation that should be investigated to prevent further damage. Common problems reported include refrigerant leaks, electrical climate control issues, and compressor malfunctions, all of which can contribute to cooling failures and noise. To resolve these issues, it is advisable for owners to conduct a thorough diagnostic check of the air conditioning system. If problems persist or if owners are uncertain about the diagnosis, seeking assistance from a qualified mechanic or dealership is recommended to ensure effective solutions and proper functioning of the AC system.

3 model years affected

Avg Mileage: 152,000

4 others reported problem

3 comments

Mitsubishi Diamante cruise control malfunction after drive line obstruction removal

Some Mitsubishi Diamante owners report experiencing cruise control malfunctions after removing a drive line obstruction, often linked to issues with the control module, sensor, or switch. These problems may stem from failed components that prevent the cruise control system from engaging or holding speed, despite power being available to the dash and fuse. Additionally, throttle actuation issues, such as a faulty throttle position sensor, can lead to the engine's computer overcompensating with fuel, which may result in black exhaust from the tailpipe. Owners are advised to thoroughly troubleshoot the cruise control system and inspect key components like the control module, sensor, and throttle to identify any damage or malfunction caused during the obstruction removal process.

4 model years affected

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