Subaru Forester: Brake booster - Brake system - Braking - Starting and operating - Subaru Forester Owner's ManualSubaru Forester: 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 push the pedal much harder than normal and the braking distance will increase.

    Two separate circuits
    Your vehicle has two separate circuit brake systems. Each circuit works diagonally across the vehicle. If one circuit of the brake system should fail, the other half of the system still works. ...

    Brake assist system
    Do not be overconfident about the brake assist. It is not a system that brings more braking ability to the vehicle beyond its braking capability. Always use the utmost care when driving r ...

    See also:

    Obstacle Detection Features
    If the liftgate encounters an obstacle during a power open or close cycle, a warning chime will sound and the liftgate will automatically reverse direction to the full closed or open position. Aft ...

    Battery
    The condition of the battery is very important for quick starting and to keep the vehicle’s electrical system working properly. Regular inspection and care are especially important in cold weath ...

    Instrument Panel
    A. Air Vents on page 8‑5. B. Turn and Lane&-Change Lever. See Turn and Lane-Change Signals on page 6‑3. Exterior Lamp Controls on page 6‑1. Fog Lamps on page 6‑4. C ...