Subaru 2003 Impreza - Manual (Page 104)

IMPREZA(NA) A1850BE-A (ENGLISH)
2
Keys and doors
2-13
– CONTINUED –
2. Make sure that the keyless entry system properly
operates by operating each transmitter.
B Deleting old transmitter codes
The control unit of the keyless entry system has four
memory locations 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 trans-
mitter codes into the system. If you have only one
current transmitter, program it four times. If you have
two current transmitters, program each one twice. If
you have three current transmitters, program two of
them once and the third one twice. This process will
leave only current transmitter codes in the system’s
memory.
NOTE
Make sure no one else is operating their keyless
entry system within range of your vehicle when
programming transmitters. If someone else were
to operate their remote transmitter while you are
programming your transmitters, it is possible
that their transmitter code will be programmed
into your system, allowing them unauthorized
access to your vehicle.