Power brakes function only when the engine is running

Power brakes function only when the engine is running  - Brakes - Your driving environment - Volvo XC60 Owners Manual - Volvo XC60

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:

    Using City Safety
    NOTE The City Safety™ function is activated automatically each time the engine has been switched off and restarted. On and Off In certain situations, it may be desirable to switch City Safety ...

    Situations where ACC may not function optimally
    WARNING The radar sensor has a limited field of vision. In some situations it may detect a vehicle later than expected or not detect other vehicles at all. If ACC is not functioning prop ...

    Inflating tires
    The tire sealing system can be used to inflate the tires. To do so: 1. Park the car in a safe place. 2. The compressor should be switched off. Ensure that the on/off switch is in position 0 (th ...