Subaru Legacy 2002 Service Manual page 3008

4. IMMOBILIZER SYSTEM
(1) Antenna
(2) Immobilizer indicator light (LED
bulb)
NOTE:
IMM ECM location for RHD model is symmetrically
opposite.
GENERAL DESCRIPTION
S909001A0509
(3) Immobilizer control module (IMM
ECM)
(4) Transponder
SL-5
Security and Locks
B6M1687A