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:

    Oil specifications
    Engine oil must meet the minimum ILSAC specification GF-4, API SL, or ACEA A1/B1. Lower quality oils may not offer the same fuel economy, engine performance, or engine protection. Depending on ...

    Gate Operator/Canadian Programming
    Canadian radio-frequency laws require transmitter signals to “time-out” (or quit) after several seconds of transmission – which may not be long enough for HomeLink to pick up the signal during ...

    Automatic locking
    When the vehicle starts to move, the doors and tailgate can be locked automatically. This feature can be turned on or off by pressing MY CAR and going to Car settings Lock settings Aut ...