Where is the battery located in a Mercedes Benz 1998 C180?
The battery is in the boot on the right hand side under the mat.
It is located under the real seat. If you want to change the battery or disconnect it, make sure you provide and alternative power source during this procedure. If not your radio will lock up and you will have to go to a Mercedes dealer to get them to reset the code. One alternative is to use a battery charger as you intermediate power source.