if you are getting a new LCM, from a dealer, the dealer will code it. if you are gettng a used one, you need to do your homework first, to make sure you are getting a right LCM, and then an Indy will code it.

If you get a used LCM and just stick it in the car, it still will work but you will get a mismatch on the VIN and the number of miles, which will set off the little red dot next to your mileage, indicating tampering with car's miles. and some lights may not work as designed.