Disc Brake Pad Wear Warning Indicators - Subaru 2000 Legacy Owner's Manual

B 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 com-
pletely stops functioning. If this happens, however, you will have to
push the pedal much harder than normal and the braking distance
will increase.
J Disc brake pad wear warning indicators
The disc brake pad wear warning indicators on the disc brakes give a
warning noise when the brake pads are worn.
If a squeaking or scraping noise is heard from the disc brakes while
braking, immediately have your vehicle checked by your SUBARU deal-
er.
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OM-H0163