Question about 2002 BMW 3 Series

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Key not working

I just installed a new aftermarket radio on my 2002 325i bmw and my factory alarm key won't work as if the battery ran out. i was told that the original radio that i took off charges the key it self by some frequency from the radio. is this true........

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That is FALSE. The radio has nothing to do with charging the keys battery. Some key batterys can be replace others get recharge through the key holder. Your Im pretty sure it can be replace, if not then more than likely you need a new battery or a new key. They are common to fail after several years.

Posted on May 08, 2009

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