Subaru 2002 Legacy Owner's Manual page 101

To program the transmitters:
1
3
Press any button.
2
HB1005BB HB1000DB
1. Open the driver's door.
2. Close the driver's door.
3. Press and release any button on the transmitter that you wish to
program into the system. The horn will sound two times to indicate
that the transmitter has been programmed.
Any additional transmitters can also be programmed at this time.
Repeat steps 1 through 3 for an additional transmitter.
To exit the programming mode:
1. After all of your transmitters are programmed, remove the key from
the ignition switch.
The horn will sound three times to indicate that the system has exited
the programming mode.
2. Make sure that the keyless entry system properly operates by
operating each transmitter.
n Deleting old transmitter codes
The control unit of the keyless entry system has four memory loca-
tions to store transmitter codes, giving it the ability to operate with up
to four transmitters. When you lose a transmitter, the lost transmitter's
code remains in the memory. For security reasons, lost transmitter
codes should be deleted from the memory.
To delete old transmitter codes, program four transmitter codes into
the system. If you have only one current transmitter, program it four
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