Found this in a manual.
’Superlocking’ using the handset:
Press and release the ’lock’ button (1) on the handset twice (within 11/2 seconds). After 15 seconds you will hear ’superlocking’ engage.
If any door, the bonnet or tailgate is left open, a mislock will occur (see ’Mislock’).
If a window or sunroof is open, superlocking will engage immediately, however volumetric protection will not be activated.
To unlock:
Press and release the ’unlock’ button (2) on the handset once.
If the handset is inoperative, the vehicle can be unlocked by using the emergency key access code (see ’Emergency key access’).
Superlocking’ using the key:
Wherever possible the handset MUST be used to ’superlock’ the vehicle. However, if the handset is inoperative, the key can be used as follows:
Turn the key in the driver’s door towards the rear of the vehicle (and release) twice within 11/2 seconds.
NOTE: ’Superlocking’ the vehicle using the key will provide perimetric protection only - volumetric protection (protection of the interior space inside the vehicle) WILL NOT BE ACTIVE! If any door, the bonnet, or the tailgate is left open, a mislock will occur (see ’Mislock’).
To unlock:
Wherever possible use the handset to unlock the vehicle - press and release the ’unlock’ button.
If necessary, the key can be used to unlock a ’superlocked’ vehicle, but before the engine can be started, it will be necessary to release the engine immobilisation function by entering the emergency key access code (see ’Emergency key access’).
Might help.
Or I am guessing your little rod might have fallen off
J