See also:

Rear screen demist - defrost
The control button is located on the heating or air conditioning system control panel. Switching on The rear screen demisting/defrosting can only operate when the engine is running. Press this ...

Checks
Unless otherwise indicated, check these components in accordance with the servicing booklet and according to your engine. Otherwise, have them checked by a PEUGEOT dealer or a qualified workshop. ...

Rear screen demist - defrost
The control button is located on the air conditioning system control panel. ...