Volvo XC90: Starting and driving / Parking brake malfunction
If you are unable to deactivate or activate the parking brake after several attempts,
contact an authorized Volvo workshop. A audible warning signal will sound if the
parking brake is activated while the vehicle is being driven.
If the vehicle must be parked before the problem is rectified, turn the wheels
as when parking on an incline and put the gear selector in P.
Low battery charge level
If the battery charge level is too low, it will not be possible to activate or
deactivate the parking brake. Connect an auxiliary battery to the vehicle if the
battery is discharged.
Replacing brake pads
Due to the design of the electric parking brake, the rear brake pads must be
replaced by a workshop. An authorized Volvo workshop is recommended.
Symbols in the instrument panel

A Canadian models.
B US models.
Settings for automatically activating the parking brake
Choose whether the parking brake should be activated automatically when the
vehicle is switched off...
With the Auto-hold brake function, the driver can release the brake pedal
and the brakes will remain applied, for example, when the vehicle has stopped at
a traffic light or intersection...
Other information:
In order for the tire inflation pressure monitoring system1 to
function correctly, inflation pressure reference values must be saved correctly.
To help ensure that the system can correctly alert the driver of low inflation pressure,
this must be done each time the tires are changed or the inflation pressure is adjusted...
Max defroster is used to quickly remove condensation and ice from windows.
Max defroster deactivates automatic climate control and air recirculation, activates
the air conditioning, and changes blower speed to 5 and temperature to
HI.
NOTE
The volume increases when the blower speed is changed to 5...