BestKeys 1999 Lexus LX470 Replacement Transponder Ignition Car Key We will provide a link to our website with Free Do-It-Yourself programming instructions with your order. Self-programming requires one working, black master key. If no master keys are available then this key must be programmed by an automotive locksmith or dealer. Replacement lexus key Don't waste hundreds at the dealership YOUR KEY SUPPLIER is the only authorized seller of BESTKEYS products. All warranties will be voided if bought from any other sellers.