Power brakes function only when the engine is running

Power brakes function only when the engine is running  - Brake system - Brakes - Your driving environment - Volvo S60 Owners Manual - Volvo S60

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:

    Ambient lighting conditions
    The camera automatically monitors the ambient lighting conditions behind the vehicle and constantly adjusts sensitivity to light. This may cause the brightness and quality of the image on the ...

    Detachable key blade
    The key blade can be removed from the remote key. When removed, the key blade can be used to: • Lock/unlock the driver's door if the remote key is not functioning properly • Lock/unlock the gl ...

    Returning to mode I from mode II
    With the remote key fully pressed into the ignition slot, press START/STOP ENGINE briefly. ...