When the ring is at the "AUTO" position and a low level of ambient light is detected by the rain/sunshine sensor, the number plate lamps, sidelamps and dipped beam headlamps are switched on automatically, without any action on the part of the driver. They can also come on if rain is detected, at the same time as automatic operation of the windscreen wipers.
As soon as the brightness returns to a sufficient level or after the windscreen wipers are switched off, the lamps are switched off automatically.
Malfunction
In the event of a malfunction of the rain/sunshine sensor, the vehicle’s lighting comes on and this warning lamp is displayed in the instrument panel, accompanied by an audible signal and/or the display of a message.
Contact a PEUGEOT dealer or a qualified workshop.
Do not cover the rain/sunshine sensor located at the top centre of the windscreen behind the interior rear view mirror; the associated functions would no longer be controlled.
In fog or snow, the rain/sunshine sensor may detect sufficient light. In this case, the lighting will not come on automatically.