2014 Mercedes-Benz E350 Cruise Control Isn't Working

Fixing Cruise Control Issues in Your 2014 Mercedes-Benz E350

Find Repair Location
Reviewed by
Bo Fader
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 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 2014 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.

What steps should I take to diagnose the non-functioning cruise control in my 2014 Mercedes-Benz E350?

To effectively diagnose the non-functioning cruise control in your 2014 Mercedes-Benz E350, begin with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by inspecting the cruise control fuse in the fuse box, as a blown fuse is a common and easily fixable issue that can halt the system's operation. Next, examine the cruise control buttons on the steering wheel for any signs of damage or sticking, as these can directly impact functionality. Following this, verify the speed sensors, which play a crucial role in the cruise control system; faulty sensors can disrupt the system's ability to maintain speed. 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 these components are essential for the cruise control to engage safely. Finally, inspect the wiring and connections associated with the cruise control system for any damage or corrosion, as compromised wiring can lead to failures. 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 E350?

When troubleshooting the cruise control system in a 2014 Mercedes-Benz E350, it's essential to understand the common problems that may lead to its failure. One of the primary issues is a faulty brake light switch, which can prevent the cruise control from engaging since it is designed to deactivate when the brake pedal is pressed. Additionally, problems with the speed sensor can disrupt the system's ability to maintain a constant speed, leading to erratic behavior or complete failure of the cruise control. Another potential culprit is a malfunctioning throttle actuator, which plays a crucial role in regulating speed. If the cruise control module itself is defective, it can also result in the system not functioning as intended. Lastly, electrical issues, such as blown fuses or wiring problems, can significantly impact the operation of the cruise control. By identifying and addressing these common issues, DIY enthusiasts can effectively restore the cruise control functionality in their vehicle.

How urgent is it to address the malfunctioning cruise control in a 2014 Mercedes-Benz E350?

When it comes to a malfunctioning cruise control in a 2014 Mercedes-Benz E350, the urgency of addressing the problem cannot be overstated. A faulty cruise control system can lead to unpredictable vehicle behavior, such as sudden acceleration or deceleration, which significantly increases the risk of accidents on the road. Promptly resolving this issue not only enhances your safety but also helps prevent potential incidents that could arise from a malfunctioning system. Additionally, delaying repairs can exacerbate the problem, potentially leading to more extensive and costly damage to the vehicle's components. This not only affects the performance of your E350 but also diminishes the convenience and enjoyment of using the cruise control feature. Therefore, it is crucial to prioritize the repair of your cruise control system to ensure a safe and reliable driving experience.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.