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Hey all,


Recently acquired a '08 IS250 Sports Luxury. Currently have one key fob and grabbed one from a locksmith for me to program via GTS Techstream.

Current problem presented is that once I begin registration, no beeps or anything to acknowledge the existing key (is registered and working) for me to continue the procedure for programming.

I ran through diag and saw this code (B2784) but uncertain on next steps. Do I replace the entire harness or is it simply a blown fuse?

Any guidance is much appreciated.

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