You park your bike and shut it down. In the morning you discover a dead battery, even though you are sure the key was off. Well, possible problems include a malfunctioning charging system or an old battery. However, another possibility is parasitic draw. It happens, for example, when an aftermarket radio, GPS, alarm system or other device doesn't actually shut down when the bike is off. Or, when a bike ECU or CANBUS computer doesn't go into "sleep" mode as it should. This video will show you how to hook up a multimeter and test for parasitic draw. Since the BMW bikes do not have fuses, there are some tricks you need to know to get a good test and avoid false positives.
Be sure and see my previous video, too, about testing your battery:
• Testing Your Motorcycl...
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