Subaru Forester: Maintenance and service / Brake booster
The brake booster utilizes the vacuum
produced by the engine manifold to reduce
the force required to depress the brake
pedal.
The vacuum in the brake booster may be
insufficient if the brake pedal is depressed
when the engine is stopped or after the
vehicle has been parked for a long period
of time. It such cases, it is necessary to
depress the brake pedal using greater
force than usual.
Check the brake pedal free play and
reserve distance according to the maintenance
schedule in the “Warranty and
Maintenance Booklet”...
Other information:
If this light illuminates when the engine is
running, it may indicate that the charging
system is not working properly.
If the light illuminates while driving or does
not turn off after the engine starts, stop the
engine at the first safe opportunity and
check the alternator belt...
While the engine is running, this warning
light illuminates when a malfunction has
been detected in the electric power steering
system.
CAUTION
When the power steering warning
light is illuminated, there may be
more resistance when the steering
wheel is operated...