BMW File Make Dealer Key with BMW multi tool
The following parts will show how to make BMW dealer key with BMW multi tool .
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.
4. CAS3 encrypt data, only can prepare dealer key with a working key data.