See also:

Misfuel prevention (diesel)
Mechanical device which prevents filling the tank of a Diesel vehicle with petrol. It avoids the risk of engine damage that can result from filling with the wrong fuel. Located in the filler neck ...

Secondary control
For mechanically locking and unlocking the doors in the event of a fault with the central locking system or a battery failure. ...

Checking levels
If a level drops significantly, have the corresponding system checked by a PEUGEOT dealer or a qualified workshop. Check all of these levels regularly and top them up if necessary, unless otherwis ...