Quote:
Originally Posted by JulianHicks
Battery History info is sorely lacking but there are two useful aids:
1) VCDS supply a [to be honest, poorly implemented] tool to look at and analyse logs as part of VCDS. Tool name is VCDSSCAN and it's in the VCDS folder.
2) The Audi SelfStudyProgram SSP364 for the Q7 describes the logs in detail as the revised Battery Manager was implemented in the Q7 and then the A8. Look for the PDF online - pages 17-22 describe the logs that the Battery Manager ECU stores.
Note: I see from your VCDS scans you have a 'bad' level of Battery Manager firmware.
Component: ENERGIEMANAGER H12 0480
There's some sort of 'bug' in firmware versions between 270 and 490 as described in the attached Audi bulletin.
[I had a bad one and it was flashed by the dealer four years ago; nowadays that flash is so old it may be better to buy an ebay BEM ECU at the right level [510+] second hand.]
Julian
PS For extra info. I include the following that I found out doing research on the BEM. [I did the A8 beta testing for Ross Tech BEM history code and I swapped my BEMs around for them to see the log differences].
There are three 'versions' of the A8 BEM:
1) FW levels up to 240. This is a simple BEM with minimal [pre Q7] logs. See attached sample log.
2) FW levels 340 to 480. These are the updated 'full log - as per Q7 info.' ECUs but are flawed as per technical note attached.
3) FW 510 to 550. These are the updated 'full log' ECUs that work properly.
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Julian,
I have made some enquiries with some second hand part dealers that are selling battery ECU's but they are unable to tell me what the software version is. In fact it is very obvious that they don't have the same depth of knowledge on the subject as yourself. I'll keep my eye on the small ads but for the time being I will likely have to live with the version I have.
Dave