Subaru Outback: Brake booster
If the brake booster does not operate as described in the following procedure, 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 engine. The 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 1 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
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 properly.
● You might feel that the brake pedal is applied by lighter force and generates a greater braking force.
● You might hear the sound of ABS operating from the engine compartment. Brake assist is not a system that brings more braking ability to the vehicle beyond its breaking capability.
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Brake pedal
Check the brake pedal free play and reserve distance according to the maintenance
schedule in the “Warranty and Maintenance Booklet”.
Checking the brake pedal free play
1) 0.08 – 0.18 in (2 – 5 mm)
Stop the engine and firmly depress the brake pedal several times. Lightly pull
the brake pedal up with one finger to check the free play with a force of less than
Checking the brake pedal reserve distance
1) More than 2.56 in (65 mm)
Depress the pedal with a force of approximately 66 lbf (294 N, 30 kgf) and measure
the distance between the upper surface of the pedal pad and the floor.
When the me
SEE MORE:
Turbo models
The engine is designed to operate at maximum performance using premium unleaded
gasoline with an octane rating of 93 AKI or higher. If 93 AKI fuel is not readily
available in your area, unleaded gasoline with an octane rating of 91 AKI may be
used with no detriment to engine durability or driv
Tire pressures
WARNING
Driving at high speeds with excessively low tire pressures can cause the tires
to deform severely and to rapidly become hot. A sharp increase in temperature could
cause tread separation, and destruction of the tires. The resulting loss of vehicle
control could lead to an accident.
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