How to replace keyless entry battery?
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My Ride: 545i sport
Model Year: 2004
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In the end, it may not make in difference as the charging circuit (in the key) may be faulty. Either way, I look at a failed key remote as an opportunity to gain a spare key after purchasing a new key from BMW. The key charging circuit may not have enough umph to risk a fire or other serious damage to the non-rechargable battery, but you never know....better safe than sorry.
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