2006 Mercedes-Benz E500 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2006 Mercedes-Benz E500 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
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25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a 2006 Mercedes-Benz E500 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 2006 Mercedes-Benz E500 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.

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 2006 Mercedes-Benz E500?

When faced with a non-functioning cruise control in your 2006 Mercedes-Benz E500, 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; if it’s not functioning properly, it may prevent the cruise control from engaging. Additionally, verify the vehicle speed sensor, as a malfunction here can disrupt the cruise control's ability to maintain speed. Don’t forget to examine the brake pedal switch, ensuring it isn’t stuck or malfunctioning, since the cruise control is designed to disengage when the brakes are applied. Finally, consider scanning the vehicle's onboard computer for any error codes related to the cruise control system, as this can provide crucial insights into the underlying problem. 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 2006 Mercedes-Benz E500?

When the cruise control in a 2006 Mercedes-Benz E500 ceases to function, several common problems may be at play. One of the primary culprits is a defective brake pedal switch, which can interrupt the cruise control system's operation when it fails to signal that the brake is engaged. Additionally, a dead battery or malfunctioning components, such as sensors integral to the cruise control system, can also lead to its failure. Throttle issues, including problems with the throttle position sensor or linkage, can further disrupt the cruise control's functionality. For those looking to tackle this issue themselves, it is essential to check these components systematically. However, if the problem persists after these checks, consulting a qualified service team is advisable to ensure the cruise control system is restored to proper working order.

How urgent is it to address the non-functioning cruise control in a 2006 Mercedes-Benz E500?

When it comes to a non-functioning cruise control in a 2006 Mercedes-Benz E500, the urgency of addressing the issue cannot be overstated. While it may seem like a minor inconvenience, neglecting this problem can lead to significant safety risks, especially during long drives where maintaining a constant speed is crucial. A malfunctioning cruise control system may indicate deeper issues within the vehicle's electronic systems, which could compromise overall performance and safety. For DIY enthusiasts, it’s essential to recognize that while you might be tempted to delay repairs, doing so could exacerbate the problem, leading to more extensive and costly repairs down the line. Therefore, it is advisable to conduct a thorough inspection of the cruise control system and, if necessary, consult with a qualified mechanic to ensure that any underlying issues are addressed promptly. Taking these steps not only enhances your driving experience but also ensures the safety of you and your passengers on the road.

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