2002 E46 330ci facelift, cluster display / electrical issue.

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  1. 2002 E46 330ci facelift, cluster display / electrical issue. 
    #1
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    Right then , following on from my caught in the rain roof won`t go up problem from yesterday here is an explanation of the offending fault;

    Dashboard cluster goes haywire, namely

    no indicator display / clicking from cluster.
    no check control system display
    no front/rear fog light display
    no dash illumination
    no high beam light

    Please note that all the above systems work perfectly on the outside of the
    car .

    I have eliminated the gmv module & also the cluster itself .

    The roof works perfect until this fault appears so whatever system it is thats failing is indirectly affecting the roof operation .

    Any suggestions would be greatly received
     
     

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    Power supply problem ie. battery nackered, bad earth etc

    Dunk
     
     

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    [QUOTE=bratty;744712]Power supply problem ie. battery nackered, bad earth etc

    New battery & alternator output checked . Earth problem ? Could be , although I would tend to think the problem would be a lot more regular than it is , also if I disconnect the battery and leave it for a few hours the problem will rectify itself for a very short time which tends to make me think it`s not a bad / loose earth .
     
     

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    Was your new battery changed before (or your problems started to manifest themselves? I would not discount the fact that the battery is either damaged or inefficient (ie a duff one) just because its new (as I assume its the correct spec for the car and a recognised manufacturer and not a supermarket special)

    The current draw in putting up the roof is quite high?

    It could be a multitude of other things but with fault finding its always best to eliminate the easiest things first.

    Good Luck (summers coming!)

    Dunk
     
     

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    Quote Originally Posted by bratty View Post
    Was your new battery changed before (or your problems started to manifest themselves? I would not discount the fact that the battery is either damaged or inefficient (ie a duff one) just because its new (as I assume its the correct spec for the car and a recognised manufacturer and not a supermarket special)

    The current draw in putting up the roof is quite high?

    It could be a multitude of other things but with fault finding its always best to eliminate the easiest things first.

    Good Luck (summers coming!)

    Dunk
    No , battery fine . I put a OE spec varta on and to be fair was pretty much this time last year I think . So I have eliminated that but here`s a good one , the car is fitted with an all singing all dancing aftermarket alarm system . Remote roof / windows / start bla bla bla . I`m clutching at straws now but could this have anything to do with it ???
     
     

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    Could be? Alarm is a constant draw on the sleeping battery and are notorious for embarressing people at inopertune moments (ie.returning from holiday to find your car will not start etc.)

    How are you checking the battery is OK? (Voltage? or capacity discharge tester?) Varta is a good make and as you state its only one year old so it should be fine!!?!! .

    Hopefully someone can advise you on the car alarm side of things as I have not got a clue on that aspect.

    Dunk
     
     

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    Quote Originally Posted by bratty View Post
    Could be? Alarm is a constant draw on the sleeping battery and are notorious for embarressing people at inopertune moments (ie.returning from holiday to find your car will not start etc.)

    How are you checking the battery is OK? (Voltage? or capacity discharge tester?) Varta is a good make and as you state its only one year old so it should be fine!!?!! .

    Hopefully someone can advise you on the car alarm side of things as I have not got a clue on that aspect.

    Dunk
    Had the battery tested with one of those proper testers that you effectively short the connections and it registers the power draw . Everything checks out . Still thinking maybe it`s the alarm system but the fault has disappeared which obviously makes trying to resolve the issue even harder
     
     

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    The basics for fault diagnosis is always get rid of the most likely cause (or easiest), And You have now eliminated a likely problem source.

    As I said I Know "FA" about alarms but if its an aftermarket one then you could be on the right track.

    I also no nothing about the OBD system (like REALLY), so I do not know if a electrical diagnostic check might help?

    Good Luck

    Dunk
     
     

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