Question about 1999 BMW 323 Series

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I changed the battery on my key and now the car wont start its like the car went into a security lockdown mode

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When you change the battery it has to be reprogrammed. You must do this through a dealer. Most of the times you have to order a new key.

Posted on Sep 17, 2010


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To clear it you have to reconnect the battery and leave it sit. It's supposed to be a 60min cycle, but it seemed like it took longer for me. I plugged it in before leaving for work (in my wife's vehicle) and she tried starting it several hours later when she needed to run an errand and it started right up.

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