Volvo XC90: Key, locks and alarm / Arming and disarming the alarm
The alarm is armed when the vehicle is locked and disarmed when the vehicle
is unlocked. The alarm can also be disarmed without a functioning key.
Arming and disarming the alarm
The alarm is armed when the vehicle is locked and disarmed when the vehicle is
unlocked.
Disarming the alarm without a functioning remote key
The vehicle can be unlocked and disarmed even if the remote key is not functioning
e.g. if the battery is discharged.
- Open the driver's door using the detachable key blade.
- This will trigger the alarm.

Location of the backup key reader in the cup holder.
- Place the remote key on the key symbol in the backup reader in the tunnel
console's cup holder.
- Turn the start knob clockwise and release.
- The alarm will be disarmed.
Turning off a triggered alarm
- Press the unlock button on the remote key or put the ignition into mode
I by turning the start knob clockwise and then releasing it.
The alarm emits sound and light signals if anyone without a valid remote key
attempts to break into the vehicle or interferes with the start battery or alarm
siren...
Driver support systems
The vehicle is equipped with a number of driver support systems that can provide the driver with active or passive assistance in various situations...
Other information:
The low beam bulbs in the halogen headlights can be changed without the help
of a workshop.
Before the bulbs can be replaced, the plastic covering over the headlight must
be removed.
CAUTION
Never touch the bulb glass with your bare fingers. Grease and oils from
your fingers vaporize in the heat and will leave a deposit on the reflector, which
may damage it...
Resetting user data when the vehicle changes owners
If the vehicle changes owners, all user data and system settings should be
reset to factory defaults.
Vehicle settings can be reset at different levels. Reset all user data and system
settings to their original factory defaults when the vehicle changes owner...