I think it's me, not you. I completely missed that part of your original question.

For 97-01 LS400, the vehicle does not need to be present to just clone a currently working key. This is the same case with any Lexus that requires ECU work in all keys lost situations (late 1990s to early 2000s models).

 

I programmed them as masters, so you can add more if you'd like. I'll bet that your light bulb is burnt out, that's fairly common given the vehicle's age. Sometimes they're also inoperable for other reasons (faulty wiring, etc.). The lack of a functioning security light will make it difficult to add keys yourself because the light is used as an indicator for which step you are in during the programming process. As long as you don't erase, I can make you more since I have the memory from your immobilizer on file. But if you erase and then add, I'll have no idea which key you erased and kept.

 

I have 4 keys for my car. Three of which are identical (as in the one you carry all the time) and one other that does not have button on it. I'm not sure why.

If I lose all these...shame on me. Good luck OP.

 

is it possible to delete the immobilizer from my car? is it separate from the ecu?

 

What year is your LS?

 

Early 1997, arrived to first dealer 12/96

 

The immobilizer is separate from the ECU on the 1997. I know of no good way to delete the immobilizer on that one.

 

I still have valet key blade would you able to cut the key.
Thank you,
Skippy