2001 Mercedes-Benz E55 AMG Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2001 Mercedes-Benz E55 AMG 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 2001 Mercedes-Benz E55 AMG 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 2001 Mercedes-Benz E55 AMG 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 2001 Mercedes-Benz E55 AMG?

When troubleshooting the non-functional cruise control in a 2001 Mercedes-Benz E55 AMG, 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, verify the functionality of the cruise control switch; if it’s faulty, it may prevent the system from engaging. The brake pedal switch is another critical component to inspect, as it disengages the cruise control when the brakes are applied; ensure it is working correctly to avoid unintended disengagement. Additionally, examine the vehicle speed sensor, which is vital for the cruise control system to function properly; a malfunction here can lead to significant issues. Utilizing a diagnostic scanner to check for error codes can provide further insights into any underlying problems. Lastly, inspect the wiring and connections associated with the cruise control system for any signs of damage or corrosion, as faulty wiring can disrupt functionality. By following these steps, you can effectively identify and address the issues affecting your cruise control system.

What are the common problems that could cause the cruise control to stop working in a 2001 Mercedes-Benz E55 AMG?

When troubleshooting the cruise control system in a 2001 Mercedes-Benz E55 AMG, it's essential to consider several common problems that could be at play. One of the primary culprits is a faulty brake light switch, which can prevent the cruise control from engaging if it fails to signal when the brake pedal is pressed. Additionally, vacuum leaks within the system can disrupt the cruise control's ability to maintain a steady speed, leading to inconsistent performance. Another potential issue is a defective speed sensor, which can provide inaccurate speed readings and cause the cruise control to malfunction. Problems with the throttle actuator may also arise, as this component is responsible for adjusting the throttle position, and any issues here can hinder 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 systematically addressing these common issues, you can effectively diagnose and potentially restore the cruise control to its intended working condition.

How urgent is it to repair the non-functioning cruise control in a 2001 Mercedes-Benz E55 AMG?

When evaluating the urgency of repairing the non-functioning cruise control in a 2001 Mercedes-Benz E55 AMG, it is essential to recognize the potential consequences of inaction. While the vehicle may still operate without this feature, the absence of cruise control can significantly impact driving safety and comfort. Long drives without the ability to maintain a consistent speed can lead to increased driver fatigue and distraction, raising the risk of accidents. Additionally, the comfort level during extended journeys is compromised, as the driver must continuously engage the accelerator, which can lead to discomfort and strain. Furthermore, neglecting this repair could affect the vehicle's resale value; prospective buyers often seek well-maintained cars with fully functional features. Lastly, while the malfunctioning cruise control may not directly cause mechanical issues, it could indicate underlying electrical problems that, if left unaddressed, might escalate into more significant repairs. Therefore, while it may not be an immediate emergency, timely attention to the cruise control system is advisable to ensure a safer, more comfortable driving experience and to protect the vehicle's overall value.

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