Owner's Manual - Page 157

For 2017 WRX.

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Instruments and controls/Warning and indicator lights
If the brake system warning light should
illuminate while driving (with the parking
brake fully released and with the ignition
switch positioned in ON), it could be an
indication of leaking of brake fluid or worn
brake pads. If this occurs, immediately
stop the vehicle at the nearest safe place
and check the brake fluid level. If the fluid
level is below the MIN mark in the
reservoir, do not drive the vehicle. Have
the vehicle towed to the nearest SUBARU
dealer for repair.
! Electronic Brake Force Distribution
(EBD) system warning
The brake system war ning light also
illuminates if a malfunction occurs in the
EBD system. In that event, it illuminates
together with the ABS warning light.
The EBD system may be malfunctioning if
the brake system warning light and ABS
warning light illuminate simultaneously
during driving.
Even if the EBD system fails, the conven-
tional braking system will still function.
However, the rear wheels will be more
prone to locking when the brakes are
applied harder than usual and the vehi-
cles motion may therefore become some-
what harder to control.
If the brake system warning light and ABS
warning light illuminate simultaneously,
take the following steps.
1. Stop the vehicle in the nearest safe,
flat place.
2. Shut down the en gine, appl y the
parking brake and then restart it.
3. Release the parking brake. If both
warning lights turn off, the EBD system
may be malfunctioning. Drive carefully to
the nearest SUBARU dealer and have the
system inspected.
4. If both warning lights illuminate again
and remain illuminated after the engine
has been restarted, shut down the engine
again, apply the parking brake, and check
the brake fluid level.
5. If the brake fluid level is not below the
MIN mark, the EBD system may be
malfunctioning. Drive carefully to the
nearest SUBARU dealer and have the
system inspected.
6. If the brake fluid level is below the
MIN mark, DO NOT drive the vehicle.
Instead, have the vehicle towed to the
nearest SUBARU dealer for repair.
! Electronic parking brake system
warning (models with electronic
parking brake system)
The brake system warning light illumi-
nates when the electronic parking brake
system is malfunctioning. If the warning
light illuminates, promptly park in a safe
location as soon as possible and contact
your SUBARU dealer.
The brake system warning light remains
illuminated when the parking brake cannot
be released even if the parking brake
switch is pushed. For details, refer to
Electronic par king bra ke (models with
electronic parking brake system) F7-44.
! Frequent operation warning
The brake system warning light illumi-
nates and a chirp sound will be heard if
the parking brake switch is operated too
frequently. In this case, the operation of
the parking brake switch is restricted to
protect the electronic parking brake sys-
tem.
! Vacuum pump system warning (ex-
cept STI)
This light illuminates when a malfunction
is detected in the vacuum pump system.
NOTE
The vacuum pump system assists the
boost pressure when driving at high
altitudes while the engine is cold.
3-22
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