Lexus - Forum

1- all doors closed and locked except drivers door (open and unlocked)
2- place key in ignition turn it to on and off
3- cycle the manual door lock from unlock to lock 5 times
4- closed the driver side door and open the driver side door
5- perform step 3.
6- place key in ignition and turn it on to off (one time to add a key) on and off two times ( rewrite ) pull key out of ignition, the door lock should response by going to lock and unlock( one time to add key) lock and unlock two times for rewrite mode.
7- push lock and unlock bottom on key together for 1 sesond and push unlock one time.

if procedure is performed correctly the door lock will lock then unlockand alarm beper will sound.

immobilizer.

1- start car and stop car. remove key from ignition cylinder.
2- place registered master key in ignition do not turn on.
3- push gas pedal 5 times
4- push brake pedal 6 times
5- take out registered master key from ignition.
6- place new key in ignition. do not turn on
7- push gas pedal one time.
8- wait 60 seconds, the factory security indicator should go off then the key is programmed.

the immobilizer section will only work if you have a registered "Master key" if you only have a valet then it will not work unless the valet was registered to be a master key.