Power brakes function only when theengine is running

Volvo XC90 / Volvo XC90 Owners Manual / Starting and driving / Brake system / Power brakes function only when theengine is running

Power brakes function only when theengine is running - Brake system - Starting and driving - Volvo XC90 Owners Manual - Volvo XC90

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:

    External sound sources
    USB flash drive To simplify the use of a USB flash drive, it is advisable to only store music files on the drive. It will take considerably longer for the system to index the files on the drive ...

    Convertible seats
    Securing a convertible seat with a seat belt Do not place the convertible seat in the front passenger's seat NOTE Refer to pages 49 and 50 for information on securing a child restraint u ...

    Seat belt use during pregnancy
    The seat belt should always be worn during pregnancy. But it is crucial that it be worn in the correct way. The diagonal section should wrap over the shoulder then be routed between the breasts ...