Toyota Lexusc, Owner'S Handbook Manual

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KEYS AND DOORS
12
KEYS
Vehicles with power back door system
Vehicles without power back door system
1 Master keys (black) — These keys work in every lock.
For your Lexus dealer to make a new key with a
built-in transponder chip, your dealer will need one
of them.
2 Sub key (gray) — This key will not open the glove box.
3 Key number plate — Keep the plate in a safe place
such as your wallet, not in the vehicle.
A transponder chip for the engine immobilizer system has been
placed in the head of the master and sub keys. These chips
are required for the system to function correctly, so be careful
not to lose these keys. If you make your own duplicate key, you
will not be able to cancel the system or start the engine.
To protect items locked in the glove box when using valet
parking, leave the sub key with the attendant.
Since the side doors and back door can be locked without a
key, you should always carry a spare master key in case you
accidentally lock your keys inside the vehicle.
If you should lose your keys or if you need additional keys,
duplicates can be made by a Lexus dealer using the key
number.
We recommend writing down the key number and storing it in
a safe place.