VOLVO IMMO ISSUE AFTER BATTERY DISCONNECTED

[dd1]

HI everyone, i have a 1999 volvo s80 battery was disconnected and now no start. i have tried to sync the CEM and ecu but no luck. i have used the volvo utility. Every time I sync it i loose the comm with ecu. I put the original file back and i have a comm with the ecu. i am going to post the original ecu eep and CEM flash. thnx in advance. i am using the ELNEC prog and volvo utility. i am using the orignal ecu and eep. not a donor. this happened right after battery replacement.

[MartiLer]

Forget about utilities, they do not correctly consider crc . If you have tango or carprog the original, to make a new Megamos 48 out dumps CEM and ECM.

[dd1]

Thnx, so basically I have to make a key for it?????

[MartiLer]

Yes, but if you read the crypt in the key 12 bytes, then you can leave your native keys.

[dd1]

And what tool does this reading?

[MartiLer]

Any programmer that supports meg reading 48