2014 Mercedes-Benz E250 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2014 Mercedes-Benz E250 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
0%
25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a 2014 Mercedes-Benz E250 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 2014 Mercedes-Benz E250 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 2014 Mercedes-Benz E250?

To effectively diagnose the non-functioning cruise control in your 2014 Mercedes-Benz E250, start with a systematic approach that prioritizes simpler checks before moving on to more complex diagnostics. Begin by inspecting the cruise control fuse located in the fuse box; a blown fuse is an easy fix that can restore functionality. Next, examine the cruise control buttons on the steering wheel for any signs of damage or sticking, as these can hinder operation. If the buttons are in good condition, proceed to verify the speed sensors, which are critical for the cruise control system to function properly. A malfunctioning speed sensor can disrupt the entire system. Additionally, check the brake pedal switch, ensuring it is not stuck and is operating correctly, as this switch is integral to cruise control functionality. If these components appear to be in order, utilize a diagnostic scanner to check for any error codes that may indicate underlying issues. Finally, inspect the wiring and connections associated with the cruise control system for any damage or loose connections, as these can also lead to malfunctions. By following this structured diagnostic approach, you can efficiently identify and address the root cause of your cruise control issues.

What are the common problems that could cause the cruise control to stop working in a 2014 Mercedes-Benz E250?

When troubleshooting cruise control issues in a 2014 Mercedes-Benz E250, it's essential to understand the common problems that may be at play. One frequent culprit 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, issues with the speed sensor can disrupt the system's ability to maintain speed, as it relies on accurate readings to function correctly. Another potential problem is vacuum leaks, which can interfere with the engine's capacity to sustain a steady speed, ultimately affecting cruise control performance. A defective cruise control module may also be responsible for the malfunction, as it is integral to the system's operation. Lastly, electrical problems, such as blown fuses or wiring issues, can significantly impact the functionality of the cruise control system. 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 2014 Mercedes-Benz E250?

When it comes to the non-functioning cruise control in a 2014 Mercedes-Benz E250, understanding the urgency of the situation is crucial for any DIY enthusiast. While it may not seem like an immediate emergency, neglecting this issue can lead to more significant problems down the line. A malfunctioning cruise control system not only diminishes the convenience of maintaining a steady speed, which is particularly beneficial during long drives, but it may also signal underlying issues within the vehicle's electronic systems. These issues could potentially compromise the overall performance and safety of your car. Therefore, it is advisable to investigate the root cause of the malfunction as soon as possible. By doing so, you can prevent further damage and ensure that your vehicle remains safe and reliable. Addressing the cruise control issue promptly not only enhances your driving experience but also safeguards against potential safety hazards that could arise from ignoring the problem.

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2014 Mercedes-Benz E250 Cruise Control Issues & Repair Costs