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.
See also:
SI-Drive: Power or Efficiency at Your Discretion
Now, the details on Subaru Intelligent Drive, which comes only on the
turbocharged 2.5 XT with the optional automatic transmission and on the 3.0 R.
The SI-Drive knob on the center console allows ...
To arm the system using remote transmitter
1. Close all windows and the moonroof (if
equipped).
2. Remove the key from the ignition
switch.
3. Open the doors and get out of the
vehicle.
4. Make sure that the engine hood is
locked.
...
Vehicle Dynamics Control OFF switch (except STI)
Indicator light (turbo models)
Indicator light (non-turbo models)
Vehicle Dynamics Control OFF switch
Pressing the switch to deactivate the Vehicle Dynamics Control system can facilitate the follow ...