Power brakes function only when theengine 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:
Engine oil
Engine oil must meet the minimum ILSAC specification GF-4, API SL, or ACEA A1/B1.
Lower quality oils may not offer the same fuel economy, engine performance, or engine
protection.
Volvo recommend ...
Front airbag deployment
• The front airbags are designed to deploy
during certain frontal or front-angular collisions,
impacts, or decelerations, depending
on the crash severity, angle, speed and
object impacted. The air ...
Vehicles equipped with Park Assist
Colored fields (4-one per sensor) indicate distance
If the vehicle is equipped with the optional Park
Assist system, the distance to an object will be
indicated more exactly and colored markers ...
