2016 Mercedes-Benz GL350 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2016 Mercedes-Benz GL350 and How to Fix Them

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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
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25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a 2016 Mercedes-Benz GL350 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 2016 Mercedes-Benz GL350 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.

What steps should I take to diagnose the non-functioning cruise control in my 2016 Mercedes-Benz GL350?

To effectively diagnose the non-functioning cruise control in your 2016 Mercedes-Benz GL350, begin with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by inspecting the cruise control fuse located in the fuse box, as a blown fuse is a common and easily rectifiable issue. Next, examine the cruise control buttons on the steering wheel for any signs of damage or sticking, as these can hinder the system's operation. Following this, verify the functionality of the speed sensors, as they play a crucial role in the cruise control system'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 these can lead to failures. By following this structured diagnostic approach, you can efficiently identify and address the root cause of the cruise control malfunction.

What are the common problems that could cause the cruise control to stop working in a 2016 Mercedes-Benz GL350?

When troubleshooting cruise control issues in a 2016 Mercedes-Benz GL350, it's essential to understand the common problems that may be at play. One of the primary culprits is a faulty brake light switch, which can prevent the cruise control from engaging since the system is designed to disengage when the brake pedal is pressed. Additionally, speed sensor issues can disrupt the cruise control's functionality, as accurate speed readings are crucial for maintaining the desired speed. Another potential problem is a malfunctioning throttle actuator, which can hinder the system's ability to sustain a consistent speed. Electrical problems, such as blown fuses or wiring issues, can also interfere with the cruise control operation. Lastly, software glitches within the vehicle's control module may lead to unexpected malfunctions. By identifying and addressing these common issues, you can effectively troubleshoot and restore the cruise control functionality in your vehicle.

How urgent is it to address the non-functioning cruise control in a 2016 Mercedes-Benz GL350?

When it comes to the non-functioning cruise control in a 2016 Mercedes-Benz GL350, understanding the urgency of the situation is crucial for any DIY enthusiast. While the immediate safety risks may not be apparent, neglecting this issue can lead to a series of inconveniences and complications that could affect your driving experience. A malfunctioning cruise control system can diminish the convenience of long drives, increasing driver fatigue and potentially leading to distractions. Moreover, ignoring the problem could result in further wear and tear on the vehicle, possibly escalating into more significant mechanical issues that require costly repairs. By addressing the cruise control malfunction promptly, you not only enhance your vehicle's performance but also ensure a more comfortable and efficient driving experience. Therefore, while it may not seem like an emergency, taking action sooner rather than later is advisable to maintain the functionality and reliability of your Mercedes-Benz GL350.

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