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:
Getting Around
The C30 is a fun car to drive. It has a 227-horsepower, turbocharged
five-cylinder engine that makes 236 pounds-feet of torque, which is a lot of
power for such a small car. It's estimated to get ...
Checking tire pressure
Cold tires
Inflation pressure should be checked when the tires are cold.
The tires are considered to be cold when they have the same temperature as the
surrounding (ambient) air.
This temperature ...
Keyless drive information messages
If all of the PCCs are removed from the vehicle while the engine is running or
if the ignition is in mode II (see page 86) and all of the doors are closed, a message
will appear in the instrument ...
