Question about 1995 BMW 5 Series

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Dischargeing battery when not in use

I Have a BMW525TD 1995 have replaced the alternator and replaced battery both are new starts goes no probs charges battery no probs but is dischargeing battery over night when left with no keys or anything on , have discovered that the fuel pump is running without the keys in the ignition so thinking this might be the problem took the fuse out but alas still runs battery down am at a loss as to what might be the problem at present i disconnect the battery when am not useing the car

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  • c_mathieson Jan 04, 2009

    Nay nothing as silly as that wish it was, best of it is all warning lights etc are working perfectly when engine is working its when you switch off the engine you can hear the diesel pump running then if you take the fuse out it stops but some thing is causeing this to happen as it should not be running when ignition is switched off and key taken out of ignition barrel ,its possible to be one of the relays but which one as their is several i unfortunatly dont have a wireing diagram fot it .

    Any thoughts . cheers Chas



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Hi,there have to be something runing at all times,check if the brake light is not staying on or the trunk or hood light,radio ,amp ,ect....

Posted on Jan 04, 2009


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