Subaru 2005 Impreza - Manual (Page 106)

2-3
Keys and doors
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The valet key fits only the ignition switch and driver’s
door lock. You can keep the trunk and glove box
locked when you leave your vehicle and valet key at a
parking facility.
Do not attach a large key holder or key case to
either key. If it banged against your knees while
you were driving, it could turn the ignition
switch from the ON position to the ACC or OFF
position, thereby stopping the engine.
„ Key number
The key number is stamped on the metal plate at-
tached to the key set. Write down the key number and
keep it in another safe place, not in the vehicle. This
number is needed to make a replacement key if you
lose your key or lock it inside the vehicle.
Immobilizer (WRX-STi)
The immobilizer system is designed to prevent an un-
authorized person from starting the engine. Only keys
registered with your vehicle’s immobilizer system can
be used to operate your vehicle. Even if an unregis-
tered key fits into the ignition switch and can be turned
to the “START” position, the engine will automatically
stop after several seconds.
Each immobilizer key contains a transponder in which
the key’s ID code is stored. When a key is inserted into
the ignition switch and turned to the “ON” position, the
transponder transmits the key’s ID code to the immo-
bilizer system’s receiver. If the transmitted ID code
matches the ID code registered in the immobilizer sys-
tem, the system allows the engine to be started. Since
the ID code is transmitted and acted upon almost in-
stantly, the immobilizer system does not impede nor-
mal starting of the engine.
If the engine fails to start, pull out the key once before
trying again. (Refer to the “Ignition switch” section
[chapter 3].)
NOTE
To protect your vehicle from theft, please pay
close attention to the following security precau-
tions: