Thanks bigmotherwhale! Quick dokument view reveals that the BSG is manipulated with implemented engine ECU signals and not with diagnostic tool function like signals. Engine rpm in CAN message with id A8 is likely calculated from alternator speed. Don't know if engine CAN messages checksum like byte...

Hi bigmotherwhale.
What do you mean by Audi test platform?
Is it a log from Audi Belt Starter Generator test platform?

Hello. CAN logs without the starter alternator connected to the car are useless and even CAN logs from car are useless without description what was done at the time logging. With Audi Belt Starter Generator (BSG) I have some experience. Audi BSG sends out some data like rpm, temp, voltage and that's...

Hello My setup for reading 48v starter-alternator CAN BUS messages without the car looks like this: 48V STARTER ALTERNATOR.jpg 48V Power supply is not needed if you only want to read CAN BUS signals coming from starter alternator. GND connection from terminal 31 to 41 or alternator body is needed. A...

Hello
I have two 48v hybrid audi a8 can-bus google sheet dokuments where
filter is active, you can select different IDs. Top left(1A) is filter sign.
IDs are in HEX and rest is in DEC
Seems like can message from engine ECU with ID 152 is the main starter-alternator driver.