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:
Phone book
The hands-free system uses two phone books (one with the cell phone's list of
contacts and one with contacts saved directly in the infotainment system), which
are combined to form one phone bo ...
Getting started
Use the controls in the center console (3) or the
buttons in the steering wheel keypad to
access, navigate and make selections in the
hands-free system’s menus.
Activating/deactivating
A short pr ...
Volvo's concern for safety
Safety is Volvo's cornerstone. Our concern
dates back to 1927 when the first Volvo rolled
off the production line. Three-point seat belts
(a Volvo invention), safety cages, and energyabsorbing
...
