The warning light on the dial turns on (on certain versions together with the message on the display) when one or more doors, the boot (indication fitted on some versions only) or the bonnet are not properly shut.
Symbols 
shown on the multifunction
display indicate incomplete left/right door closing.
With doors and boot open, if 4 km/h speed is exceeded the buzzer will sound (only for versions with reconfigurable multifunction display).
IMPORTANT On versions not fitted with electric door lock, no warning message will be displayed if door is not perfectly closed or is left open.
See also:
Without The Ignition Key
Special care must be taken when the vehicle is towed with the ignition in the
OFF/LOCK position. A dolly should be used under the front wheels if the rear wheels
are raised. Proper towing equipmen ...
External light failure
The warning light on the dial comes on (on certain versions together with the
message on the display) when a failure is detected to one of the following lights:
taillights, brake lights (3rd ...
Engine
...