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Something like this:
UB: Battery Voltage
IB: Current in Amps
TB: Battery temp.
BN: a few things depending on the number displayed, 50-90 - the charge state in % of the battery, 0 - auto stop/start disabled due to current charge state, 100 - sufficient charge for auto stop/start, 110 - battery sufficiently charged to not be charged further by the alternator
Very interesting ... this is part of the puzzle for replacing the main battery. Technically, one is supposed to have the dealer go in and tell the computer that you've put in a new battery so it charges the right amount.
Sounds as if the BN info in engineering mode gives you some clues about how the new battery is operating. If the display shows 110, then the charging function probably has some 'learning' capability to keep it fully charged.
Makes sense because my auxiliary battery is 'malfunctioning'.
I got a new aux battery today and will put it in tomorrow, then I'll see what this screen says.
THank you Hawk!
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