varcity64

iTrader: (2)

i tried doing a search, but really didnt come up w/much. i have a 2000 GS300. i only had 1 master key and 1 valet key. soooo, i ordered a new cut master key. i was able to program the key to start the car, but the buttons (unlock, trunk, and panic) DONT WORK the ONLY reason i spent so much money on another key was so i could have 2 master keys w/working buttons. PLEASE HELP...

squarehat

Try these instructions (for an RX, should have the same 3-button key). I'm pretty sure these are for the keyless entry transmitter (not the immobilizer transponder), because they don't involve the brake pedal pushing like the transponder.

https://www.clublexus.com/forums/sho...rogramming+key

Edit, try this thread for (explains a 99 LS in a little bit simpler detail). Instructions are from VVT-i, a moderator here and Lexus technician, so they should be accurate. https://www.clublexus.com/forums/sho...ey+transmitter

SeattleGS400

iTrader: (1)

This PDF is for a '98 GS400--it uses the same key, so give it a shot!

SeattleGS400

iTrader: (1)

Here's more info in this PDF for reprogramming