Battery system

[Sergx]

gentlemen anyone knows what the function of this is and how to top it up as it keeps circulating each time I stop my c350e...thanks

 

[DSM10000]

Have you checked your handbook?

Also, we do have female members!

 

[markjay]

That's the battery coolant fiiler cap. The HV battery has its own cooling system (topically filled with special non-conductive coolant, for in case of a leak). I wouldn't top it up... the HV system it's dealer only (or specialist).