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Originally Posted by Aleko
Doesn't the Owner's Manual say to use the black plastic key every so often to keep the battery charged and the chip working? I'm pretty sure that's where I read it (either X5's or the 3 Series) because I used to do it every 6 months or so on both cars.
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No I think those are just the regular keys - and thats to charge the battery that is used when you remotely unlock/lock the car. Since the plastic key you have to turn in the door there should be no need for a battery.
The plastic one I believe just has a chip, which is most likely rom - which means electricity or not it keeps its data. Plus the plastic key has no metal contacts, so how would it charge?
05-08-2006, 08:19 PM
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