Question: How to perform mileage correction on bmw (i.e E90) with autohox ii? Getting function under Test. Need the cluster, cas, and key to read correctly. Any advice will be appreciated.
For CAS system
You can do the job with hextag.
You need to do CAS mileage on HexProg software need to do on bench cluster and CAS.
1. Take out CAS and cluster. Set CAS mileage as 0. Write
2. Read cluster EEPROM, put km, write, easy.
if you are getting error on editing eeprom, you can try unplug and connect power to hexprog after edit then only write eeprom back.
For BMW FEM/BDC system:
you need to reset FEM/BDC mileage to 0 on autohex ii unlock option and edit in cluster the desired mileage using hextag.