Question about 2004 BMW 5 Series

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The lights will come on an the battery is indicating a full charge but my 2004 535i BMW will not start. It will not make any sounds when I turn the key to the start position. The other day it was slow about starting as if the battery was going down. What could be the problem?

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  • Dave  C
    Dave C May 11, 2010

    I would clean and check all the connections at the battery and starter especially.



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Try giving this vehicle a boost first to make sure that its getting enough power. if it still doesn't start then it could be a few things First if its an automatic car make sure it fully in park, with ignition on and foot on the brakes move shift from park all the way down and put back in park, if that doesn'r work put in neutral and try to start. (If its a stick shift make sure clutch is full engaged before starting). Ok if this doesn't work then check for power at starer when key is turned you will need a test light or a (test probe for this) The wire going to the starter solenoid should have power when you are in the crank position, if it does and the starter doesn't work then you need a new starter. If it doesn't have power you may have a bad ignition switch or a bad neutral safety switch. (this is on the transmission its a safety switch that prevents the vehicle from starting in D-R- 1-2-3, it will only start in park or neutral. Last but noty least if this vehcile has a after market alarm system make sur ethat is turning off if NOT sure turn ignition to the ON position and flip valet switch to turn system OFF. (led light in car should saty on steady, not flashing when in valet mode)Good luck and contact if you need more help. Thanks for using FIX YA

Posted on May 12, 2009

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Have the battery load tested. it dosen't take much power to operate lights and under load, the battery may have enough volts but not enough amps to turn the starter. If battery checks good with load test, check the starter for excessive draw and check all connections at battery, starter and block ground.

Posted on May 12, 2009


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