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:
Loss of a remote key
If either of the remote keys is lost, the other
should be taken with the car to a Volvo retailer.
As an anti-theft measure, the code of the lost
remote key must be erased from the system.
NOTE
...
Screen aspect ratio
Three screen aspect ratios can be set:
Normal, Zoom 1 and Zoom 2.
Normal: The image on the screen is presented
at the normal aspect ratio (usually 4:3 or 16:9).
Zoom 1: Full-screen image, but par ...
Location of tail light bulbs
1 Parking light
2 Turn signal
3 Back-up light
4 Parking light
5 Brake light
NOTE
If the message indicating a burned out bulb
remains in the information display after a
bulb has been replaced ...
