BMW File Make Dealer Key with BMW multi tool

The following parts will show how to make BMW dealer key with BMW multi tool .


1.Choose CAS or EWS type. It will tips you:
file make key

BMW multi tool tips

2.Load the choose EEPROM file you will get the make dealer key window:
bmw multi tool cas3+-eeprom dump maker

3.Choose key position and press “Make Dealer Key” button. Flow the given tips to prepare dealer key. After succeed you can save the new EEPROM dump file. For EWS1, EWS2, EWS3, EWS4, CAS1, CAS2, CAS3 type the prepared dealer key can start the engine directly. For some CA3+ type you need to write back the new dump file into car.

BMW multi tool

4.  CAS3 encrypt data, only can prepare dealer key with a working key data.