2007 Mercedes-Benz E550 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2007 Mercedes-Benz E550 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 2007 Mercedes-Benz E550 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 E550 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 E550?

When faced with a non-functional cruise control in your 2007 Mercedes-Benz E550, it's essential to adopt a systematic diagnostic approach. Start by checking the cruise control fuse; 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, as a malfunction here can disrupt functionality. It's also crucial to verify that your brake lights are operational, since a faulty brake light switch can prevent the cruise control from engaging. Additionally, examine the vehicle speed sensor to ensure it is accurately relaying information to the cruise control system, as any faults here can lead to operational issues. Finally, consider scanning the vehicle's onboard computer for error codes that may provide insights into the problem. By following these steps, you can effectively diagnose and potentially resolve the cruise control issues in your vehicle, making your DIY troubleshooting efforts more efficient.

What are the common problems that could cause the cruise control to stop working in a 2007 Mercedes-Benz E550?

When the cruise control in your 2007 Mercedes-Benz E550 stops functioning, it can be frustrating, but understanding the common problems can guide you in diagnosing the issue. One frequent culprit is a faulty brake light switch, which can prevent the cruise control from engaging if it fails to signal that the brake pedal is pressed. Additionally, issues with the speed sensor can disrupt the system, as it relies on accurate speed readings to maintain control. Vacuum leaks are another concern, as they can interfere with the cruise control's ability to hold a steady speed, leading to unexpected disengagement. A defective cruise control module may also be at fault, resulting in a lack of response to your commands. Lastly, electrical problems, such as blown fuses or wiring issues, can significantly impact the system's operation. By systematically checking these components, you can identify and resolve the underlying issues affecting your cruise control, allowing you to enjoy a smoother driving experience once again.

How urgent is it to address the non-functioning cruise control in a 2007 Mercedes-Benz E550?

When dealing with a non-functioning cruise control in a 2007 Mercedes-Benz E550, understanding the urgency of the situation is crucial. While a malfunctioning cruise control may initially seem like a minor inconvenience, especially for those who primarily drive in urban settings, it can significantly impact long-distance travel and highway driving. If the issue stems from a simple cause like a blown fuse or a faulty brake switch, it may not pose an immediate safety risk, but it can detract from the overall driving experience. However, if the malfunction is linked to critical components such as the control module or throttle, it could indicate deeper mechanical issues that warrant immediate attention. Additionally, since the cruise control system is often integrated with other vehicle systems like the Electronic Stability Program (ESP), neglecting the problem could lead to further complications that affect vehicle performance and safety. Therefore, while the urgency may vary based on individual driving habits and the specific cause of the malfunction, it is generally advisable to address the issue promptly to ensure both comfort and safety on the road.

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2007 Mercedes-Benz E550 Cruise Control Issues & Solutions