I have some instructions on how to program a new remote for any lexus. I've tried it, and it works (i have a 97 es 300). I'll give you the instructions so you can try. If it works for you, please let me know.
Set-up: Key out of ignition and driver's door open & unlocked & passenger's door closed and locked.
Procedure:
1. Insert key in ignition and remove.
2. Press the driver's MANUAL door lock switch, LOCK to UNLOCK, 5 times.
3. Close and open the driver's door.
4. Press the driver's MANUAL door lock switch, LOCK to UNLOCK, 5 times.
5. Insert key in ignition and turn ignition ON and OFF...
Once to add a new code.
Twice to rewrite over ALL previously stored codes.
Three times to confrim how many codes are stored in the ECU.
6. Remove teh key from ignition.
The car will now respond back the selected mode by automatically locking and unlocking the doors...
once to add a new code.
twice to rewrite over all previously stored codes.
one to four times (slowly) to show how many codes have been stored.
If the confirm mode was selected the process is complete. Otherewise:
7. Press the transmitter switch on the key for 1 second.
After the signal is received, the car will respond by automatically locking and unlocking the doors once.
8. Close & Open driver door
9. Press transmitter switch on the remote for more than 1 second
Make sure your keyless remote FCC code # is the same in your Lexus manual
good luck :D
