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:
Locking the vehicle
Models with keyless drive have a pressure-sensitive area on the outside door
handles and a rubber- covered button next to the trunk opening control
The doors and the trunk can be locked by pressi ...
Accessory installation
• We strongly recommend that Volvo owners
install only genuine, Volvo-approved
accessories, and that accessory installations
be performed only by a trained and
qualified Volvo service technici ...
Ignition mode I
NOTE
To access ignition modes I or II without starting
the engine, the brake pedal must not be
depressed.
- With the remote key fully pressed into the
ignition slot, press START/STOP
ENGINE ...