Volvo XC90: Key, locks and alarm / Electronic immobilizer
The electronic immobilizer is a start inhibitor that helps prevent the vehicle
from being started by an unauthorized person.
The vehicle can only be started with the right remote key.
The following instrument panel error messages are related to the electronic immobilizer:

Remote immobilizer with tracking system
(Only certain markets and in combination with Volvo On Call.)
The vehicle is equipped with a system that makes it possible to track and locate
the vehicle and to remotely activate the immobilizer to prevent the vehicle from
being started. Contact your nearest Volvo retailer for more information and assistance
activating the system.
The following instrument panel error messages are related to the remote immobilizer
with tracking system:

The detachable key blade can be used to unlock the vehicle from the outside,
e.g. if the battery in the remote key is discharged.
Unlocking
Pull the front left-hand door handle
to its end position to access the lock cylinder...
The following information contains type designations for the start and lock
system.
Alarm system
USA FCC ID: MAYDA 5823(3)
This device complies with part 15 of the FCC rules...
Other information:
The headlight bulbs can be replaced without the assistance of a workshop,
but before a bulb can be replaced, the plastic cover over the headlight needs to
be removed.
Lift the rubber strip by pressing
it inward into the engine compartment.
Release the pins in the plastic
cover's four clips by pressing them down with a screwdriver or similar object and
remove the covering...
(Option/accessory.)
Pre-cleaning of the vehicle before driving is used to improve the air quality
in the passenger compartment.
It is only possible to activate pre-cleaning manually from the center display,
but the function is also started automatically when preconditioning has finished...