Here is the complete how to on getting duplicate Lexus keys on the
cheap.

1. Visit www.ebay.com
2. Search for lexus remote keys or click here instead -
http://search.ebay.com/search/search.dll?from=R40&_trksid=m37&satitle=lexus+remo
te+keys&category0=.
Cost me 55$ for a remote key and 20$ for a flat key.
3. Choose the appropriate key for your year and make. Win the bid
4. Once you receive the keys visit a good locksmith and get the keys
cut. Cost me 10$.

PROGRAMMING
TRANSPONDER KEY
You MUST have an already programmed master key in order to program in
more keys.

Key program ONE
1. Insert an already programmed master key into the ignition. Do not
turn.
2. Press and release the gas pedal 5 times.
3. Press and release the brake pedal 6 times.
4. Remove the key from the ignition.
5. Insert the new key you want to program into the ignition.
6. Press and release the gas pedal one time.
7. Wait 1 minute. The security light will be blinking for this one
minute. When it stops blinking your key is programmed. To end
programming step on brake one time.

Key Program TWO
1. Close all doors.
2. Insert an already programmed master key into the ignition.
3. Turn the key from the OFF to On (without starting the engine) and
back OFF FIVE (5) times.
4. Open and close the drivers door SIX (6) times.
5. Remove the key from the ignition.
6. Insert the new key you want to program into the ignition.
7. Wait 1 minute. The security light will be blinking for this one
minute. When it stops blinking your key is programmed. To end
programming step on brake one time.

REMOTE PROGRAMMING
PROCEDURE ONE
1. Close and lock all doors. Unlock and open drivers door. Leave the
door open.
2. Put key into ignition and remove. Do not turn it on.
3. Using the electric lock switch (on drivers door) . Lock and unlock
5 times.
4. Close and open drivers door. Leave the door open.
5. Using the electric lock switch. Lock and unlock 5 times.
6. Put key into ignition. Turn to "ON"  (without starting the engine),
turn off and remove.
7. You will see the door locks cycle by themselves.
8. On the remote, press and hold the LOCK and the UNLOCK button at the
same time for 2 seconds.
9. On the remote, press the LOCK button for 1 second.
AT THIS POINT, the locks should cycle by themselves ONE time. This
means the procedure was accepted. IF the locks cycle twice it has
failed. IF this happens you must start over. Hold the remotes higher
up for better reception.

10.Close and open door to end programming procedure.

REMOTE PROGRAMMING
PROCEDURE TWO
1. Close and lock all doors. Unlock and open drivers door. Leave the
door open.
2. Put key into ignition and remove TWO TIMES.
3. Close and open the drivers door TWO TIMES.
4. Put key into the ignition and remove.
5. Close and open the drivers door two times. Leave the door open.
6. Put key into the ignition. Close the drivers door.
7. Turn ignition ON (without starting the engine) then OFF ONE TIME-
this will put the car in ADD mode for your remote. (Turning the
ignition ON then OFF TWO TIMES will ADD the remote but will erase all
existing remotes.)
8. Remove the key from the ignition. The door locks will cycle one
time (or two if you are erasing) . On the REMOTE press and hold the
LOCK and the UNLOCK button for 2 seconds. On the REMOTE press the LOCK
button for one second.

AT THIS POINT, the locks should cycle by themselves ONE time. This
means the procedure was accepted. IF the locks cycle twice it has
failed. IF this happens you must start over. Hold the remotes higher
up for better reception

10. Open and close the drivers door. Put key in ignition and pull out.
This will end programming.