Quote:
Originally Posted by BavarianFanatic
When you lock the car everything shuts off without coding.
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Not quite. There are background programs that are always running, the alarm for instance. That's why the battery will slowly discharge when the car isn't driven for a while. If you don't drive regularly, and/or when you do it's only short trips, use a battery maintainer so that it powers the background programs, not the battery.