2007 Mercedes-Benz E350 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2007 Mercedes-Benz E350 and How to Fix Them

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Reviewed by
Andrew Hajjar
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 2007 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 2007 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 are the initial diagnostic steps to troubleshoot the non-functional cruise control in a 2007 Mercedes-Benz E350?

When troubleshooting the non-functional cruise control in a 2007 Mercedes-Benz E350, it's essential to adopt a systematic diagnostic approach. Start by checking the cruise control fuse, as a blown fuse is a common and easily fixable issue that can halt the system's operation. Next, inspect the cruise control switch located on the steering wheel; ensure it is functioning correctly, as a malfunctioning switch can prevent the system from engaging. Following this, verify that the brake lights are operational, since a faulty brake light switch can inadvertently disable the cruise control. Additionally, examine the vehicle speed sensor to confirm it is sending accurate signals to the cruise control system, as any discrepancies here can lead to operational failures. Finally, consider scanning the vehicle's onboard computer for error codes related to the cruise control system, as these codes can provide critical insights into any underlying problems. By methodically working through these steps, you can effectively diagnose and potentially resolve the issues affecting your cruise control system.

What are the common problems that could cause the cruise control to stop working in a 2007 Mercedes-Benz E350?

When troubleshooting the cruise control system in a 2007 Mercedes-Benz E350, it's essential to understand the common problems that may lead to its malfunction. One frequent issue is a faulty brake light switch, which can prevent the cruise control from engaging by failing to signal when the brake pedal is pressed. Additionally, a defective cruise control module can directly impact the system's functionality, necessitating either repair or replacement. Another potential culprit is vacuum leaks, which can disrupt the engine's ability to maintain a consistent speed, thereby affecting cruise control performance. Furthermore, a faulty speed sensor may lead to incorrect speed readings, causing the cruise control to disengage unexpectedly. Lastly, electrical problems, including wiring issues or blown fuses, can also hinder the cruise control system's operation. By diagnosing these common issues, DIY enthusiasts can effectively restore the cruise control functionality in their vehicle.

How urgent is it to repair the non-functioning cruise control in a 2007 Mercedes-Benz E350?

When evaluating the urgency of repairing the non-functioning cruise control in your 2007 Mercedes-Benz E350, it's essential to recognize that while it may not pose an immediate safety threat, the implications of neglecting this issue can be significant. A malfunctioning cruise control system can lead to increased driver fatigue and distraction, particularly during long drives, which can compromise overall road safety. Additionally, the absence of this feature diminishes driving comfort, making it more challenging to maintain a consistent speed and enjoy a relaxed driving experience. Furthermore, addressing the cruise control issue promptly can help preserve the vehicle's resale value; potential buyers often view unresolved mechanical problems as red flags. Therefore, while the repair may not be urgent in the traditional sense, taking action sooner rather than later can enhance your driving experience, ensure safety, and protect your investment in the long run.

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