Question about 2004 BMW 5 Series

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My 2004 530i won't start.

I came home after work to pick up something and when I went back out to start my car. It would not start. When I tried to turn the key and all I heard was a clicking sound and a mechanical hum. All the dash lights and the interior lights work fine and the battery has a green dot indicating a good battery. How can I fix this problem?

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  • 3 more comments 
  • pperez66173 Oct 22, 2008

    Thanks for the advice. The problem was built up corosion on the battery terminals and on the battery posts. Once I cleaned them the car started right up and runs great.

  • Andra757 Nov 04, 2008

    I am certain my starter is bad. How do I go about changing it out? When I turn the ignition, it clicks and all the lights come on.

  • josemg70 Jan 18, 2009

    My car is a 2003, but it shows the same symptom. I've checked the battery, I replaced the ignition switch as a preventive maintenance. I replaced 2 starters and after a month, it has the same problem. Clicks when you turn the key, but the starter doesn't spin. That's for sure the starter. I recommend you to buy a new (no remanufactured) starter and go from there.

  • Anonymous Mar 27, 2014

    Just got the transfer box fixed as it fell apart when driving it the lights were on I.e. up hill thing an the tn what ever they are, I turned the car off when turning it back on the light went green then I heard a bang an the lights were back on (freelancer 1979) i think it's a 79

  • Anonymous Mar 27, 2014

    Drove home from work fine no problems. When I got back in after being home and put key in to start heard a slight pop sound and it didnt start. What happened?

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If you hear a mechanical hum then its either something with the starter or the battery. Charge your battery and see if its just a little too weak to turn the engine over. If that doesnt fix it, then you might have to replace the starter. Unless there is a serious mechanical issue, your engine shouldnt be the reason the starter can't get it to turn over.

Posted on Oct 19, 2008

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