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:
Windshield wipers
1 Thumb wheel
2 Rain sensor on/off
Windshield wipers off
If the lever is in the 0 position
and
you move it upwards, the wipers
will sweep one stroke at a time for
as long as you hold the lev ...
Water on brake discs and brake pads affects braking
Driving in rain and slush or passing through an automatic car wash can cause
water to collect on the brake discs and pads. This will cause a delay in braking
effect when the pedal is depressed. To ...
Introduction
Volvo recommends the use of Volvo trailer hitches that are specially designed
for the vehicle.
NOTE
See page 337 for the maximum trailer and tongue weights recommended by Volvo.
Observe t ...
