Porsche Cayman Owner's Manual page 35

In order not to limit the action range of the passen-
ger compartment monitoring system:
Do not fold the backrests forward.
Deactivating the passenger compartment
monitoring system for one locking process
If a person or animal remains in the car while it is
locked, the passenger compartment monitoring
system must be switched off.
Quickly lock car twice. The doors are locked
but can be opened from the inside:
1. Pull inner door handle once to unlock door
lock.
2. Pull inner door handle again to open door.
Note
Inform any person remaining in the car that the
alarm system will be triggered if the door is
opened.
Fault indication
A double horn signal during locking indicates a
defect in the central locking or alarm system.
Have the defect remedied at an authorized
Porsche dealer.
33
Controls, Instruments