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It can be very frustrating doing the resting current draw test on the newer MB's, and the 140's were especially problematic. Need to lower a window and lock the car, pop the trunk, simulate closing the trunk, then hook up the ammeter and wait about 5-10 minutes. Some of the newer cars you have to wait longer than that. These will have a bit higher resting draw than other cars, 30-40 ma not unusual. Whats the age of the battery?
Gilly
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