Subaru Crosstrek Service Manual: Dtc b1575 incorrect immobilizer key

DTC DETECTING CONDITION:

Incorrect immobilizer key (use of unregistered key in body integrated unit)

CAUTION:

When the body integrated unit is replaced, registration of the immobilizer system is required. For details, refer to the “REGISTRATION MANUAL FOR IMMOBILIZER” provided as a separate volume.

1.CONFIRM NUMBER OF REGISTERED IGNITION KEY.

Using the Subaru Select Monitor, check the number of registered ignition keys. Refer to the “REGISTRATION MANUAL FOR IMMOBILIZER” provided as a separate volume.

Is one or more ignition key(s) registered?

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1575 INCORRECT IMMOBILIZER KEY">Go to Step 2.

Register the immobilizer.

2.CHECK IGNITION KEY.

1) Prepare another ignition key that is already registered.

2) Insert the ignition key in the ignition switch.

3) Turn the ignition switch to ON.

4) Read the DTC of the body integrated unit. Perform the procedure with all registered ignition keys.

Is DTC B1402 displayed for all ignition keys?

Refer to “REGISTRATION MANUAL FOR IMMOBILIZER” provided as a separate volume, and perform the actions for the case that all keys are faulty/lost.

Ignition key unit was defective, or ignition key was not registered.

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