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:
For Connected Safety to be able to share information about road conditions
with other drivers, the function must be activated. If you do not wish to share
information, the function can be deactivated.
Activate or deactivate the function
using this button in the center display's Function view...
The radar sensor is used by several driver support systems to detect other
vehicles.
Location of radar sensor
The radar sensor is used by the following functions:
Distance Alert*
Adaptive Cruise Control*
Pilot Assist*
Lane Keeping Aid
City Safety
Steering assistance at risk of collision
Any modifications to the radar sensor may make its use illegal...