Central Locking Switch; Alarm - Volvo 2003 V40 Operation And Care Manual

Turn the key again within 10 seconds to unlock other doors, trunk/tailgate.
One turn with the key towards "lock" in the driver's door locks all doors, trunk/tailgate and fuel filler door with a 10
minutes delay in the fuel filler door.
WARNING!
If the doors are locked while driving, this may hinder rapid access to the occupants of the car in the event of an
accident. (Also see information on "Child safety locks").

Central locking switch

You can use the button to lock or unlock all doors (unlock only for 25 seconds after locking by remote).
LEFT side of button: lock
RIGHT side of button: unlock
Note: If the key is in the ignition switch and you close the driver's door, the driver's door will be immediately
unlocked again in order to prevent accidentally locking the car with the keys left inside the car.
pg. 43 Alarm

Alarm

The radio signal emitted from the transmitter, which is used to set/unset the alarm, is a "rolling code" signal. This
means that the signal is changed randomly for each transmission and is intended to help prevent unauthorized
recording of the code.
When armed (set), the alarm continuously monitors a number of points on the car. The following conditions will set off
the alarm:
The hood is opened
The trunk/tailgate is opened
A door is opened
The ignition switch is tampered with
The alarm will sound for 30 second intervals, with a 10 second pause between intervals. This function cannot be
interrupted.
If the battery or the siren are disconnected, the alarm will sound for five minutes
Arming (setting) the alarm
The alarm can be armed in the following ways:
Central locking button