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2000 BMW 740iL

Question: Problems wit computer system after disconnecting the battery

Question

rodneye7, Cincinnati, OH, August 02, 2010, 15:03
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 Rookie

Someone told me that disconnecting your battery will cause a problem with your computer system. He said that there was a special way of changing the battery. Is this true?

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  • Answer #1

    Chow August 04, 2010, 03:15
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     Master

    No

    After battery replacement, set time and date and worst case if warnings prompt on dash, turn the steering wheel lock to lock and go for a drive afterwards

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    Visitor, September 06, 2010, 20:15

    I had battery replaced on 2001 740iL and immediately after nav computer was nonfunctional. I read that you must not disconnect battery until nav computer has timed out (power LED goes off). Appaently the nav computer stays powered up for a bit after exiting car. Anyway, in my case, replacing battery caused me to have to buy new nav computer. All is fine now. Dave

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