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:

    Safety
    Antilock brakes, traction control, side-impact airbags for the front seats and side curtain-type airbags are standard. A Whiplash Protection Seating System moves the front seatbacks rearward in a ...

    Automatic operation
    1. To open the sun shade completely, pull the control as far back as possible (to the auto open position) and release it. 2. To fully open the laminated panoramic roof, pull the control as far ...

    Starting the vehicle
    Starting the engine WARNING Before starting, check that the seat, steering wheel and mirrors are adjusted properly. Make sure the brake pedal can be depressed completely. Adjust the seat if ne ...