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:
Cordless headphones
1 Switch for selecting channel A (CH.A) or channel B (CH.B)
2 On/Off button
3 Volume
4 On/Off indicator light
Two sets of cordless headphones are included
with the RSE system.
The cordless he ...
Introduction
Two remote keys or optional Personal Car
Communicators (PCC) are provided with your
vehicle. They enable you to unlock the doors
and tailgate, and also function as ignition keys
to start the v ...
Towing a trailer
The maximum weights recommended by Volvo
for trailers with brakes are shown in the table
below.
Recommended hitch tongue load: not more
than 10% of the trailer's weight. The trailer
load should ...
