Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSSUBARU2016LEGACY 2.5IREPAIR AND DIAGNOSISBODY & FRAMEDOOR LOCKSSECURITY AND LOCKS - KEYLESS ACCESS (W/PUSH BUTTON START) (DIAGNOSTICS)DIAGNOSTICS WITH PHENOMENONINSPECTIONACCESS KEY LOCKOUT PROTECTION FUNCTION IN THE TRUNK DOES NOT OPERATE
2016 Subaru Legacy 2.5i
Access Key Lockout Protection Function In The Trunk Does Not Operate
2016 Subaru Legacy 2.5iSECTION Access Key Lockout Protection Function In The Trunk Does Not Operate
CAUTION:
- Inspect LAN system according to the basic diagnostic procedure, and make sure that there is no fault.
- Check that the keyless access function is not stopped.
- When the access key or keyless access control module is replaced, registration of the immobilizer is required. For the relevant procedures, refer to the "REGISTRATION MANUAL FOR IMMOBILIZER" provided as a separate volume.
DIAGNOSTICS PROCEDURE
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK TRUNK OPENER BUTTON. Check that the trunk opens with the driver's seat trunk opener button. |
Does it open normally? | Go to step 2 . | Check the door lock circuit. < Ref. to INSPECTION , Door Lock Control System. > |
| 2 CHECK KEYLESS OPERATION. Check that the trunk opens when the trunk opener button of the access key is operated. |
Does it open normally? | Go to step 7 . | Go to step 3 . |
3 CHECK TRUNK UNLOCK OPERATION.
|
Does it open normally? | Go to step 7 . | Go to step 4 . |
4 CHECK WIRING HARNESS.
|
Is there continuity? | Go to step 5 . | Repair or replace the open circuit of harness. |
| 5 CHECK WIRING HARNESS. Check the continuity between the trunk lid lock actuator connector and chassis ground. Connector & terminal (R186) No. 2 - Chassis ground: |
Is there continuity? | Go to step 6 . | Repair or replace the open circuit of harness. |
| 6 CHECK TRUNK LID LOCK ACTUATOR. Check the trunk lid lock actuator. < Ref. to TRUNK LID LATCH AND ACTUATOR ASSEMBLY . > |
Is trunk lid lock actuator normal? | Replace the body integrated unit. < Ref. to BODY INTEGRATED UNIT . > | Replace the trunk lid latch & actuator assembly. < Ref. to TRUNK LID LATCH AND ACTUATOR ASSEMBLY . > |
7 CHECK ACCESS KEY.
|
Does it open normally? | Go to step 8 . | Replace the access key. < Ref. to REPLACEMENT , Access Key. > |
8 CHECK KEYLESS ACCESS SYSTEM CHECK.
|
Does the outside buzzer sound? | Check the circuit of the rear gate/trunk opener button. < Ref. to CHECK REAR GATE OPENER BUTTON CIRCUIT , INSPECTION, Door Lock Control System. > | Go to step 9 . |
9 CHECK WIRING HARNESS.
|
Is there continuity? | Go to step 10 . | Repair or replace the open circuit of harness. |
| 10 CHECK PASSENGER ROOM REAR ANTENNA. Replace the passenger room rear antenna with a new or properly functioning part. |
Does it operate properly? | Replace the passenger room rear antenna. < Ref. to REMOVAL , Keyless Access Indoor Antenna. > | Replace the keyless access control module. < Ref. to KEYLESS ACCESS CONTROL MODULE . > |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.