Hi,
i found some steps to programe new LS430 keylesse ntery but I need to have the old working master which I dot have.
I have 2 keys .1st one is master key can start the car and they keyless function work with it and I lost this key. The 2nd one can start the car and do all functions but not programed for keyless entery. Is there is anyway to do it without going to the dealer and pay $$$.

 

Your available solutions depend on whether or not your non-remote key is programmed as a master key or valet. Watching the security light, insert the key into the ignition. The light will immediately go out with a programmed master key. A programmed Valet key will cause the light to go solid for a few seconds and then extinguish.