Subaru Legacy: Brake booster - Brake system - Braking - Starting and operating - Subaru Legacy Owners ManualSubaru Legacy: 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.

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

    Brake assist system
    WARNING 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:

    Audio Control Switch Operation
    When the audio unit is turned on, operation of the audio unit from the steering wheel is possible. NOTE: Because the audio unit will be turned off under the following conditions, the switches wi ...

    Panic mode
    Vehicles without a smart key system When is pressed for longer than about one second, an alarm will sound intermittently and the vehicle lights will flash to deter any person from trying t ...

    Fuses
    Totally Integrated Power Module (TIPM) The TIPM is located in the engine compartment near theair cleaner assembly. This center contains cartridge fusesand mini fuses. A label that identifies each c ...