2016 BMW X3 CAS4+ (N20) Key works at induction but no proximity functions.
The key is 315 mhz.
Problem is solved by Yanhua Mini ACDP.
Read both DME and CAS
This is a cas4+ you can’t do this safely via obd and have to get isn from DME. Also all the slots are comfort access on cas4.
Read ISN from DME N20 on car
with N20 interface board
Read ISN successfully
Read CAS4+ immo data and program all keys lost with ACDP mini.
All keys lost requires ISN code, input ISN code read from above.
http://www.key-programmer.org/2023/07/27/yanhua-acdp-2016-bmw-cas4-proximity-not-working-solution/
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