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georg_wagner18

Mercedes X Klasse diesel engine fault

My 2018 Mercedes X Klasse diesel is showing a check engine light and sometimes stalls when idling. The error memory shows a fuel level sensor fault. Has anyone experienced something similar with their Mercedes X Klasse? Could it be a defective fuse?

Summary of the thread

A 2018 Mercedes X Klasse diesel exhibited a check engine light and occasional stalling when idling, with an error memory indicating a fuel level sensor fault. The issue was initially suspected to be related to a defective fuse or loose wiring. After investigation, the problem was resolved by replacing a defective fuse, restoring the fuel sensor's functionality.

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4 comment(s)

karendunkel24

I have experienced similar issues with my X Klasse. The check engine light was on, and the error code pointed to the fuel sensor. Have you checked the wiring to the level sensor itself? Sometimes a loose connection can trigger a sensor fault.

georg_wagner18 (community.author)

Thanks for the information. Where exactly is the fuel sensor wiring located? Is it easily accessible, or do I need special tools to reach it?

karendunkel24

The fuel sensor wiring is connected to the fuel tank. I would recommend consulting with a workshop. They can diagnose the issue properly and replace the fuel sensor if needed. It is a bit complex.

georg_wagner18 (community.author)

Turns out it was a defective fuse. Replaced it and the fuel sensor is working as expected. Repair cost 52€.

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MERCEDES

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XKLASSE