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Customer has a car that was in a fire. The back half of the car was roasted pretty bad. They have replaced all wiring with a wrecked donor car. They also had a replacement RFH. I’m using the IM 608. I’ve reprogrammed in his old prox keys.  The car turns on but does not crank. The vin in the replacement RFH is wrong IM608 says it can’t change vin on old part. Will the RFH keep it from starting? I’m guessing yes. Also since his button is kind of toasty I’m assuming that is a plug and play part. I advised him to get a new RFH.  I already tried on the diagnostic side to change vin since it could not change it automatically on the immo side. It is there it could not do it because it was a used module.  Can anyone confirm my assumptions? 

Even on the bench? I've had a lot of them that are dead to the world, but will still read via pin out on the desk

no comm with orig DME.

Can you just clone it over?   Have done that on several 3 series using K-tag and they plug and play

Synced with AVDI. tried to code with ISTA/P and corrupted the flash. I had CAS info from previous key make for customer. corrected CAS and tried again to code. same thing. My question is does anyone have a list of reasons this happens as I believe I am using ISTA/p correctly. the reason I am coding is DME is out of an auto and this one is standard. Thank you.