July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

DTC P1577 IMM Control Module EEPROM: DTC Detecting Condition

WARNING: This page is about a different car, the 2011 Subaru Tribeca. However, it is still accessible from the selected car via links, so may be relevant.

Body integrated unit malfunctioning

Failed to access the ROM inside the body integrated unit.

DIAGNOSIS PROCEDURE

Step	Check	Yes	No
1 PERFORM REGISTRATION ON IGNITION KEY. Perform registration on all keys of the vehicle. Refer to SUBARU SELECT MONITOR .	Is registration for all keys complete?	Make sure it is possible to start the engine with all keys that have been taught. This completes the work.	Go to step 2
2 PERFORM REGISTRATION ON IGNITION KEY. Perform registration on all keys of the vehicle. Refer to SUBARU SELECT MONITOR .	Is registration for all keys complete?	Make sure it is possible to start the engine with all keys that have been taught. This completes the work.	Go to step 3
3 PERFORM REGISTRATION ON IGNITION KEY. Perform registration on all keys of the vehicle. Refer to SUBARU SELECT MONITOR .	Is registration for all keys complete?	Make sure it is possible to start the engine with all keys that have been taught. This completes the work.	Replace the body integrated unit. Ref. to BODY INTEGRATED UNIT .