I apologize if this has been covered, but I could not find the steps to take after the ECM immobilzer has been reflashed. I purchased a 99 LC100 with only a valet key. I ordered in 2 new keys with the buttons and have had them cut to fit ignition. I sent off the ECM to have the immobilizer flashed and will receive it soon. I would like to have instructions to program the keys to start and to program the keys to use the buttons on the master keys I purchased. Thanks for the input.