Volvo XC90: Starting and driving / Automatic transmission
Gear position is selected automatically to make driving as energy efficient
as possible. The transmission also has a manual mode.
The transmission is available in two different versions. The gear selector indicates
which transmission the vehicle has. The various gear selectors have different functions.

Overview of large gear selector and gear shift pattern in the
instrument panel.

Overview of small gear selector and gear shift pattern in the
instrument panel.
The selected gear selector position is displayed in the instrument panel:
P, R, N, D or M.
The transmission is part of the vehicle's driveline (power transmission) between
the engine and the drive wheels. The function of the transmission is to change gears
depending on speed and power needs...
For the small gear selector, change gear position by pushing the spring-loaded
gear selector forward or rearward, or to the side for manual shifting. For the large
gear selector, you instead move the gear selector to the left for manual shifting...
Other information:
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...
(Option/accessory.)
(Warning of collision from the rear.)
In some situations, it may be difficult for Rear Collision Warning (RCW) to
warn the driver of a collision risk.
This may be the case if:
the vehicle approaching from the rear is detected at a late stage
the vehicle approaching from the rear changes lanes at a late stage
a trailer, bicycle holder or similar is connected to the vehicle'..