Thread: E90s suck.
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Old 10-08-2017, 08:13 PM   #4
Josh (PA)
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Join Date: Mar 2004
Carmudgeonly Ride: '03 325xiT, '11 135i C, '13 X5 n55
Location: Downingtown, PA
Posts: 3,086
@JST, it over charges the battery causing it to fail early. Basically, it adjusts the charging cycle based on the learned performance of the battery.

@JV, I think it may be an AWD issue more than an E90 issue. I still haven't done the oil pan gasket on the e46 because the entire front drive system has to be removed.
Josh (PA) -
'11 135i convertible
'13 X5 n55
'03 325 wagon
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