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Opening Doors in Case of Lost Keys

Model: Mercedes Classe C W203 - Years 2000-2007
Part: Car door

If you lose your keys or the remote doesn't work and you can't open the doors for any reason, there is a method to power the central locking from the outside and open the doors. At the rear of the left front wheel (driver's side), you will find a terminal (which represents the ground) and a pin covered by a cap (which represents the positive): remove the cap and connect battery cables, placing the ground on the terminal and the positive on the pin. This should allow you to open the doors without breaking anything.

Updated on 14 February 2026 by ScegliAuto

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