GRAND_LS 4

iTrader: (2)

I was wondering if anyone had programming instructions for the LS smart key? I programmed the one for my GS with no issues… and even tried the same instructions for my LS with no luck. Thanks.

Nelson

Well...yes and no...
After extensive searching I found the two sets of instructions below.
Supposedly the first one would work for a 2004 LS which is what I have also.

Neither worked even after a number of tries. I went to the dealer and they said a user could not do the programming and they did it for me. I'm not 100% convinced that is true, but that's what they said.
I hope someone has a more absolute answer.
--Nelson

Lexus - Add Duplicate Master Key

For 2002+ Toyota, Lexus
Requires one working Toyota/Lexus Master Key.
1. Make sure all doors and windows are closed.
2. Insert Master key into the ignition cylinder.
3. Cycle the ignition cylinder from On to OFF five times.
4. Open and close the driver side door 6 times.
5. Remove the Master Key and insert the new duplicates key.
6. TURN THE IGNITION CYLINDER ON.
7. The new key will be registered after 60 seconds. The THEFT light on the dashboard will go out, indicating that programming has been completed.

-or-

1. Enter the car with a working pre-programmed key and close all doors. Simultaneously depress and release both the brake and the accelerator pedals.
2. Within 5 seconds, insert the working pre-programmed key into the ignition. Do not turn the key.
3. Within 15 seconds of inserting the ignition key, depress and release the accelerator pedal 5 times.
4. Within 20 seconds, depress and release the brake pedal 6 times.
5. Within 10 seconds, remove the working pre-programmed key from the ignition.
6. Within 10 seconds, insert the newly cut transponder key into the ignition.
7. Depress and release the accelerator pedal one time. The security light should now begin flashing to indicate that the computer is reading the new key and programming the system.
8. Leave the new key in the ignition for at least 60 seconds. When the security light stops flashing, the programming process should be complete.
9. Start the vehicle using the new key to verify that programming was successful.