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Check Of Welcome Lighting System

WARNING: This page is about a different car, the 2021 Subaru Ascent. However, it is still accessible from the selected car via links, so may be relevant.

Trouble symptom: 

Welcome lighting does not illuminate.

  1. CHECK BODY INTEGRATED UNIT SETTING  .

    Display the data of [Welcome Light Off Delay Time(Approaching)] or [Welcome Light Off Delay Time(Exiting)] using Subaru Select Monitor, Ref. to BODY CONTROL (DIAGNOSTICS)>DATA MONITOR .

    Is the setting other than [OFF]?

    Yes  : Go to  2.

    No  : Turn the setting to other than [OFF].

  2. CHECK BODY INTEGRATED UNIT SETTING  .

    Display the [Illumination Sensor Setting] data using Subaru Select Monitor. Ref. to BODY CONTROL (DIAGNOSTICS)>DATA MONITOR .

    Is the setting in the [Exist]?

    Yes  : Go to  3.

    No  : Turn the setting to [Support].

  3. CHECK AUTO HEADLIGHT  .
    1. Set the lighting switch to AUTO position.
    2. Make the light control sensor vicinity dark.
    3. Turn the ignition switch to ON.

    Do the parking light, tail light and headlight illuminate?

    Yes  : Go to  4.

    No  : Check the auto headlight system. Ref. to LIGHTING SYSTEM>Headlight System>INSPECTION>AUTO HEADLIGHT SYSTEM CHECK .

  4. CHECK DOOR LOCK  .

    Operate the door lock using the keyless transmitter or the access key.

    Do the lock and unlock operate properly?

    Yes  : Go to  5.

    No  :

  5. CHECK BODY INTEGRATED UNIT  .
    1. Display the [IGN voltage] data using Subaru Select Monitor,

      Ref. to BODY CONTROL (DIAGNOSTICS)>DATA MONITOR .

    2. Turn the ignition switch to ON.

    Is the voltage 10 - 15 V?

    Yes  : Replace the body integrated unit. Ref. to SECURITY AND LOCKS>BODY INTEGRATED UNIT .

    No  : Repair or replace the harness.



Trouble symptom: 

Welcome lighting does not go off.

  1. CHECK BODY INTEGRATED UNIT SETTING  .

    Display the data of [Welcome Light Off Delay Time(Approaching)] or [Welcome Light Off Delay Time(Exiting)] using Subaru Select Monitor, Ref. to BODY CONTROL (DIAGNOSTICS)>DATA MONITOR .

    Is the illumination time setting correct?

    Yes  : Go to  2.

    No  : Set the illumination time.

  2. CHECK THE LIGHTS  .

    Set the lighting switch to the switch 1 (TAIL/PARKING) and switch 2 (HEAD).

    Do the parking light, tail light and headlight illuminate?

    Yes  : Go to  3.

    No  : Check the combination switch (light) and each light circuit.

  3. CHECK BODY INTEGRATED UNIT  .

    Display the [Driver's door SW input] data using Subaru Select Monitor, Ref. to BODY CONTROL (DIAGNOSTICS)>DATA MONITOR .

    Does the display switch between [OFF] <-> [ON] when driver's door is opened/closed?

    Yes  : Go to  4.

    No  : Check the door switch, Ref. to SECURITY AND LOCKS>Door Lock Control System>INSPECTION>CHECK DOOR SWITCH .

  4. CHECK DOOR LOCK  .

    Operate the door lock using the keyless transmitter or the access key.

    Do the lock and unlock operate properly?

    Yes  : Replace the body integrated unit, Ref. to SECURITY AND LOCKS>BODY INTEGRATED UNIT .

    No  :