See also:

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, ...

Security
The Volvo S80 is fitted as standard with a wide range of features designed to protect occupants from burglary, theft and assault. An electronic immobiliser makes it impossible to start the car wit ...

Reverse
The vehicle must be stationary when position R is selected. ...