Quote:
Originally Posted by ctuna
First thing is to put a long slow full charge on it.
Measure the resting battery voltage and see how much it drops
overnight after putting a full slow charge on it.
Average life expectancy on a battery in these is 6 years.
The first time it required you to boost it you should have done this.
The IBS system in these cars begins turning stuff off that it
deems unnecessary to keep the car running one of which is the stereo.
Also you can get all kinds of false alarms and diagnostic
error's with a low battery.
I have talked to BMW techs and one the first things they do when
a car comes in is put it on charger.
Jumping only starts the car it does not fill the battery .
Also if you have added aftermarket stuff that exceeds the capacity of the
electrical system or prevents the car from going to sleep that could be
part of the problem.
|
My car does start and drives fine but the battery doesn't hold much of a charge. I haven't hooked up the stereo (Zapco amps, etc) yet so there hasn't been any additional draw on the battery. Just kinda weird that the CCC doesn't turn on or come to life.
Even with normal driving around, the CCC is dead.