SOURCE: a battery sign appears in my car gage for BMW
Check & clean all battery connections first, see if that helps, then if not, Have your battery & charging system checked, such as alternator. It's trying to tell you somethings not right.
SOURCE: BMW 320i year2002 e46
I don't think your trouble is on the ignition side of it but I am sure that you must have a look at the idle speed control(stepper motor).
If with temperatuer your "misfire"changes to better, it means that it's probably running too lean at cold, normally the stepper motor or ISC does this job.
Let us know how you get on.
Cheers.
SOURCE: I have a Semi-Automatic 2005
The problem you are having sounds suspiciously like the torque converter is not disengaging to allow your engine to spin freely until you are ready to accelerate.If when decelerating or coming to a stop you feel a jerking sensation similar to driving a vehicle with a manual transmission and bringing the vehicle to a stop without depressing the clutch, then the problem you are having is faulty Torque Converter Control Solenoid or a bad Torque Converter itself. If you have any other questions please contact me here. Good luck.
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