Brake booster

The brake booster uses engine manifold vacuum to assist braking force. Do not turn off the engine while driving because that will turn off the brake booster, resulting in poor braking power.

The brakes will continue to work even when the brake booster completely stops functioning. If this happens, however, you will have to depress the pedal much harder than normal and the braking distance will increase.

    See also:

    Glossary of tire terminology
    - Accessory weight The combined weight (in excess of those standard items which may be replaced) of automatic transmission, power steering, power brakes, power windows, power seats, radio, ...

    To activate/deactivate the Hill start assist system (STI)
    While the Hill start assist system is deactivated, when starting on an uphill grade, braking power is not maintained if the brake pedal is released. Start on an uphill grade by using the parking b ...

    Bulb chart
    Lights A and B are the LED (Light Emitting Diode) type. Consult your SUBARU dealer for replacement. - Bulbs may become very hot while illuminated. Before replacing bulbs, turn off the l ...