2021 Mercedes-Benz E53 AMG Cruise Control Isn't Working

Fixing Cruise Control Issues in 2021 Mercedes-Benz E53 AMG

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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 2021 Mercedes-Benz E53 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 2021 Mercedes-Benz E53 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-functioning cruise control in a 2021 Mercedes-Benz E53 AMG?

When faced with a non-functioning cruise control in your 2021 Mercedes-Benz E53 AMG, it's essential to adopt a systematic diagnostic approach. Start by checking the cruise control settings in your vehicle's menu to confirm that it is activated. Next, inspect the cruise control buttons on the steering wheel for any signs of malfunction, as these can often be the source of the issue. It's also crucial to verify the functionality of the speed sensors, as they provide the necessary data for the cruise control system to operate correctly. Utilizing a diagnostic tool to scan for fault codes can reveal underlying problems that may not be immediately visible. Additionally, examine the wiring and connections associated with the cruise control system for any damage or loose connections that could hinder performance. Finally, if all else fails, consider testing the cruise control module itself, as it may require professional assessment. By following these steps, you can effectively identify and address the root cause of your cruise control malfunction, empowering you to take control of your vehicle's functionality.

What are the common problems that could cause the cruise control to stop working in a 2021 Mercedes-Benz E53 AMG?

When the cruise control in your 2021 Mercedes-Benz E53 AMG ceases to function, it can be frustrating, but understanding the common problems can help you diagnose the issue. One frequent culprit is a faulty speed sensor, which is essential for the system to accurately gauge your vehicle's speed; if it malfunctions, the cruise control may fail to engage or maintain speed. Another common issue is related to the brake light switch; if this switch is defective, it may not signal the cruise control system correctly, causing it to disengage unexpectedly. Additionally, a malfunctioning throttle actuator can hinder the system's ability to maintain speed, as it directly controls the engine's throttle opening. A defective cruise control module can also disrupt communication between various components, leading to operational failures. Lastly, electrical problems such as wiring issues or blown fuses can prevent the cruise control from working properly. By identifying these potential issues, you can take the first steps toward troubleshooting and restoring your cruise control functionality.

How urgent is it to address the malfunctioning cruise control in a 2021 Mercedes-Benz E53 AMG?

Addressing a malfunctioning cruise control in your 2021 Mercedes-Benz E53 AMG is not just a matter of convenience; it is a critical safety concern that requires immediate attention. When cruise control fails, it can compromise your ability to maintain a consistent speed, increasing the risk of accidents on the road. Moreover, neglecting this issue can lead to a less enjoyable driving experience, as the cruise control feature is designed to enhance comfort during long journeys. Additionally, delaying repairs may result in more extensive damage to the vehicle's systems, leading to higher repair costs down the line. Therefore, it is essential to prioritize the resolution of cruise control malfunctions to ensure your safety, maintain driving comfort, and protect your investment in your vehicle.

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2021 Mercedes-Benz E53 AMG Cruise Control Issues & Repairs