Subaru Legacy BN/BS (2015-2019) Owners Manual: ABS warning light

Subaru Legacy BN/BS (2015-2019) Owners Manual / Instruments and controls / Warning and indicator lights / ABS warning light

CAUTION

If any of the following conditions occur, we recommend that you have the ABS repaired at the first available opportunity by your SUBARU dealer.

The warning light does not illuminate when the ignition switch is turned to the "ON" position.
The warning light illuminates when the ignition switch is turned to the "ON" position, but it does not turn off even after starting the vehicle.
The warning light illuminates during driving.

When the warning light is on (and brake system warning light is off), the ABS function shuts down; however, the conventional brake system continues to operate normally.

The ABS warning light illuminates together with the brake system warning light if the EBD system malfunctions. For further details of the EBD system malfunction warning, refer to "Brake system warning light" .

NOTE If the warning light behavior is as described in the following conditions, the ABS may be considered normal.

The warning light illuminates right after the engine is started but turns off immediately, remaining off.
The warning light remains illuminated after the engine has been started, but it turns off while driving.
The warning light illuminates during driving, but it turns off immediately and remains off.

When driving with an insufficient battery voltage such as when the engine is jump started, the ABS warning light may illuminate.

This is due to the low battery voltage and does not indicate a malfunction.

When the battery becomes fully charged, the light will turn off.

Low tire pressure warning light (U.S. spec. models)

When the ignition switch is turned to the "ON" position, the low tire pressure warning light will illuminate for approximately 2 seconds to check that the tire pressure monitoring system (TPMS) is ...

Brake system warning light

WARNING Driving with the brake system warning light on is dangerous. This indicates your brake system may not be working properly. If the light remains illuminated, ...

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Procedure
1. Check of the fuel amount↓2. Inspection of starter motor circuit Diagnostics for Engine Starting Failure > STARTER MOTOR CIRCUIT↓3. Inspection of ECM power supply and ground line Diagnostics for Engine Starting Failure > CHECK POWER SUPPLY AND GROUND LINE OF ENGINE CONTROL MODULE (ECM) ...