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:

    Safety
    You don't have to worry about whether it's safe to put your kids in this convertible. When driving with the top down, the C70 has roll bars that pop up behind the rear seats if the C70 tilts past ...

    Inserting and removing the remote key
    Ignition slot with remote key and START/STOP ENGINE button. Inserting the remote key1 Holding the end of the remote key with the base of the key blade, insert the remote key into the ignition sl ...

    Facts about TSA
    • TSA intervenes at speeds above approximately 40 mph (60 km/h) • The DSTC symbol () in the instrument panel will flash when TSA is working • If the driver switches off the DSTC system's Spi ...