Quote:
Originally Posted by jHamshaw
Your rechargeable key battery is probably shot then! They need using once in a while to keep them charged from the car!!
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On the E46, older 5 Series, etc., the battery charged everytime you used it. There was no battery to replace.
If you read the manual for the E70, it uses a regualr battery, like other car makers use for remote lock/unlock. I'm not 100% sure, but pretty sure the E70 key fob does not charge itself.