Subaru 2009 Impreza User Manual download pdf (Page 344)

& Recommended clutch fluid

Use one of the following types of fluid.

– Genuine SUBARU brake fluid

– FMVSS No. 116, fresh DOT 3 or DOT 4

brake fluid

CAUTION

Avoid mixing DOT 3 and DOT 4

brake fluids even if they are the

same brand.

Brake booster

If the brake booster does not operate as

described in the following, have it checked

by your SUBARU dealer.

1. With the engine off, depress the brake

pedal several times, applying the same

pedal force each time. The distance the

pedal travels should not vary.

2. With the brake pedal depressed, start

the en gine. Th e pedal should move

slightly down to the floor.

3. With the brake pedal depressed, stop

the engine and keep the pedal depressed

for 30 seconds. The pedal height should

not change.

4. Start the engine again and run for

approximately one minute then turn it off.

Depress the brake pedal several times to

check the brake booster. The brake

booster operates properly if the pedal

stroke decreases with each depression.

NOTE

For vehicles equipped with the brake

assist system, when you depress the

brake pedal strongly or suddenly, the

following phenomena occur. However,

even though these occur, they do not

indicate any malfunctions, and the

brake assist system is operating prop-

erly.

. You might feel that the brake pedal

is applied by lighter force and gener-

ates a greater braking force.

. You might hear clicking (knocking)

sounds around brake pedal.

Brake assist is not a system that brings

more braking ability to the vehicle

beyond its breaking capability.

Maintenance and service 11-29

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