2010 Mercedes-Benz E350 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2010 Mercedes-Benz E350 and How to Fix Them

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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 2010 Mercedes-Benz E350 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 2010 Mercedes-Benz E350 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 are the initial diagnostic steps to troubleshoot the non-functioning cruise control in a 2010 Mercedes-Benz E350?

When faced with a non-functioning cruise control in your 2010 Mercedes-Benz E350, start by checking the cruise control fuse, as a blown fuse is a common and easily fixable issue. Next, verify the functionality of the cruise control switch; a malfunctioning switch can prevent the system from engaging. It's also essential to inspect the speed sensors, as they play a crucial role in the cruise control's operation. If these initial checks do not resolve the issue, use a diagnostic scanner to look for any error codes that may indicate specific problems within the system. Additionally, ensure that the brake and clutch switches are working correctly, as faulty switches can inhibit cruise control activation. Finally, examine the wiring connections associated with the cruise control system for any signs of damage or loose connections. By systematically addressing these areas, you can effectively diagnose and potentially resolve the cruise control issue in your vehicle.

What are the common problems that could cause the cruise control to stop working in a 2010 Mercedes-Benz E350?

When the cruise control in a 2010 Mercedes-Benz E350 ceases to function, several common problems may be at play. One of the primary culprits is a faulty brake light switch, which is crucial for the system's operation; if this switch malfunctions, it can prevent the cruise control from engaging, as the system is designed to deactivate when the brake pedal is pressed. Additionally, issues with the speed sensor can disrupt the cruise control's ability to maintain a constant speed, leading to its failure. Another potential issue is vacuum leaks within the system, which can significantly impair the cruise control's functionality. Furthermore, a defective cruise control module may also be responsible for the system's inability to operate correctly. Lastly, electrical problems, such as blown fuses or wiring issues, can hinder the cruise control system's performance. By understanding these common problems, DIYers can effectively troubleshoot and potentially resolve the issues affecting their vehicle's cruise control system.

How urgent is it to address the non-functioning cruise control in a 2010 Mercedes-Benz E350?

When it comes to a non-functioning cruise control in a 2010 Mercedes-Benz E350, the urgency of addressing the issue cannot be overstated. While it may seem like a minor inconvenience, neglecting this problem can lead to more significant safety risks and potential damage to the vehicle's electronic systems. A malfunctioning cruise control not only diminishes the convenience of maintaining a steady speed during long drives but can also indicate deeper issues within the vehicle's electronics or sensors. This could affect other critical systems, making it essential to investigate the root cause promptly. Moreover, without cruise control, drivers may struggle to maintain a consistent speed, leading to increased fuel consumption and driver fatigue, particularly on extended trips. By addressing the cruise control issue early, you can prevent further complications and potentially save on costly repairs down the line. Therefore, while it may not be an immediate emergency, taking action sooner rather than later is advisable to ensure the overall safety and efficiency of your vehicle.

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2010 Mercedes-Benz E350 Cruise Control Issues & Repairs