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Mercedes E Klasse Hybrid Auxiliary Heater Problem

My 2021 Mercedes E Klasse hybrid auxiliary heater is acting up I cant activate the parking heater and the diagnostic tool shows an error Could this be a defective glow plug or something with the heater core ventilation system blower motor or temperature sensor

A 2021 Mercedes E Klasse hybrid is experiencing issues with the auxiliary heater, specifically the inability to activate the parking heater, accompanied by a generic error message. Possible causes include a defective glow plug, issues with the heater core ventilation system, blower motor, or temperature sensor. While replacing a glow plug could be a DIY task, it is recommended to seek professional assistance due to the complexity of modern hybrid systems. Ultimately, the problem was identified as a defective glow plug, which was resolved by a local shop.

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4 comment(s)

Sounds frustrating A defective glow plug could be the issue, especially with a specific error code Have you checked the auxiliary heater system fuses A blown fuse can cause issues Does the error message have more details, or is it a generic auxiliary heater malfunction It could also be a faulty temperature sensor or the blower motor not running normally

Thanks for the reply The fuses are fine The error message is generic Auxiliary heater malfunction no function If it is the glow plug, could I replace it myself with basic tools

A generic error points to the heater itself Replacing a glow plug can be a DIY job, but on a modern hybrid Mercedes, it can be complicated Access can be tricky, and specialized tools might be needed to remove it without damaging the threads Plus, you need to diagnose which glow plug is faulty I recommend a trusted workshop They can pinpoint the problem and fix it correctly You dont want to risk making things worse or damaging other components

Thanks for the advice I took it to my local shop, and it was a defective glow plug The total repair was 440€ At least its fixed now, and I didnt risk messing anything up Appreciate the guidance

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MERCEDES

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EKLASSE