Power brakes function only when the engine is running
The power brakes utilize vacuum pressure which is only created when the engine is running. Never let the vehicle roll to a stop with the engine switched off.
If the power brakes are not working, considerably higher pressure will be required on the brake pedal to compensate for the lack of power assistance. This can happen for example when towing your vehicle or if the engine is switched off when the vehicle is rolling. The brake pedal feels harder than usual.
See also:
Supplemental Restraint System
Supplemental Restraint System (SRS)
SRS warning light
As an enhancement to the three-point seat
belts, your Volvo is equipped with a Supplemental
Restraint System (SRS). Volvo's SRS
consists of ...
Activating/deactivating warning signals
The collision warning system’s visual signals are activated automatically when
the engine is started if the collision warning system is switched on.
The audible warning signal can be activated/ dea ...
Center console controls
Center console controls for menu navigation
1 - Press MY CAR to access the My Car menus.
2 - Press OK/MENU to select a highlighted selection or to store a certain function
in the system's me ...