Mercedes GLC Diesel Auxiliary Heater Problem

I had a similar issue with my GLC The symptoms sound familiar Have you checked the auxiliary heater's glow plug relay That can also cause problems A defective glow plug is often the culprit, but without proper diagnostics, you're just guessing Did you notice any unusual behavior before the heater stopped working altogether

Relay, huh I hadn't considered that Where is that located typically And no, nothing seemed off beforehand It just decided one day to quit Also, if it is the glow plug, is it something I can tackle myself, or am I looking at a specialized tool situation

The relay location can vary, check your car's manual Accessing the glow plug itself usually requires some specialized tools, and depending on its location, it can be a pain to reach Since you mentioned error codes, I would strongly advise getting it properly diagnosed My problem was also the glow plug and the bill came to around 440€ It's often better to bite the bullet and go to a workshop

Yep, you're right Bit the bullet and took it in Turns out it WAS the glow plug The final bill matched your estimate, roughly 440€ Everything's working perfectly now Thanks for the advice, I appreciate it