Question about 2001 BMW 5 Series

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My 2001 525i BMW cranks over OK but will not start after being off the road for several weeks, battery has been removed fully charged and replaced ?

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  • Glyn Beaumont Apr 06, 2011

    I am not at home and have limited tools,if you could give me details of what could be causing the problem I may be able to work from there, does this model have some sort of fuel or electrical cut off that requires enabling, I tried spraying "Easy start" in the air manifold simply to establish if there was any spark, if there was I'm sure it would have fired momentarily but there was nothing, where could I find a point to open the fuel line to check supply pressure etc ? Thanks Bazza

  • Glyn Beaumont Apr 23, 2011

    I need to know where the fuse boxes are : 2001 525i, BMW. E39.
    Fuses Number 1 to 45 are in the roof of the glove box.
    Fuses 46 to 62 are supposed to be in the right side in the trunk above the battery but they are NOT there only 3 fuses and 2 relays, there is a list of fuses 45 to 62 stuck on the back of the pull down side panel but there are no other fuses in this area ..... please advise me where these fuses are. thanx Bazza 41

  • Glyn Beaumont Apr 25, 2011

    Excuse my ignorance ... Raise which carpet and where ? Thanks Bazza

  • Glyn Beaumont Apr 27, 2011

    Hi, Problem solved !
    I still have not found fuses 46 to 62.
    I have removed, cleaned & replaced the "Knock sensor".
    Engine started and running OK.
    Thanxs for assistance but I explained my limited resources and needed answers to specific questions which were not addressed.
    Regards Bazza 41



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Next things to check are spark and fuel pressure. Making sure you have both of those are the firs steps.

Posted on Apr 06, 2011

  • 2 more comments 
  • Lee A.
    Lee A. Apr 06, 2011

    there is a tool to check fuel pressure usually you can rent them for free at autozone with a small deposit. As for spark, there is also a tool you can get to test the spark as well that is relatively cheap.

  • Lee A.
    Lee A. Apr 23, 2011

    Should be on the right side, raise the carpet, and remove the panel.
    Thank you,

  • Lee A.
    Lee A. Apr 25, 2011

    In the trunk on the right/passenger side.

  • Lee A.
    Lee A. Apr 27, 2011

    I gave as detailed responses as should be needed. You can also look in your owners manual for the same info. I did not receive any response back to my last comment so I assumed you found it. Glad you got it working.
    Thanks again,



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