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:
Shock sensors (dealer option)
The shock sensors trigger the alarm
system when they sense impacts applied
to the vehicle and when any of their
electric wires are cut. The alarm system
causes the horn to sound and the turn
...
AT and CVT models
CAUTION
If you restart the engine while the vehicle is moving, shift the select lever
into the “N” position. Do not attempt to place the select lever of a moving vehicle
into the “P” position.
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2011 Subaru Impreza WRX STi review
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