2005 E46 320 - Relay burned out

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  1. 2005 E46 320 - Relay burned out 
    #1
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    monkeysthatdrink's Car Details
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    2005
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    Folks

    I had a strange problem with my 05 (E90) 320D yesterday. The windscreen wipers just stopped working. Nothing would restart them. I pulled over, turned off the engine, and then tried again. Nothing.

    The entire journey was stop start as I couldn't drive in the rain. I managed to get home (4 hour drive) and took the car to the local BMW dealer this morning.

    After 90 minutes, the Service guy tells me the main relay has burnt out and they need to get the parts in from England (I'm in Ireland) and that they can do it Tuesday. He then told me the entire electrical circuitry is going to be shot as a result...

    Ok, how much? Expensive...

    So... I collect my car from the service area, start off on my way back to work. Try the wipers...

    VOILA!

    All working fine!?!

    My question to your good selves is whether you think it could be the relay or is the guy talking out of his hat? Also, I have an after unit stereo - could it be that causing the funkiness? I can't see how it could be the relay if the wipers are now working normally... very odd.... the service guy made a point of asking me to bring in the original stereo too...

    The plot thickens!

    Thanks in advance!

    monkey
    Right pedal go, left pedal STOP!
     
     

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    #2
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    Ok, so a few hours googling and it appears that this is in fact a common problem and it could well be the relay.

    Can someone tell me what part number I'd need for a new relay and is it easy to change myself? I suspect it might be the blue relay looking part in the fuse box in the glove box on the left hand side. Would that be correct? If so, how much would one of these cost?

    The way the dealer was talking today, I had expected it to be hundreds and a massive job: "need to reset your computer, upload new firmware blah blah...". Looking on t'internet, it appears like I can get a wiper relay for less than €30 and I just unplug the old and slap in the new...

    Does anyone have any advise?

    Thanks a mill

    monkey
    Right pedal go, left pedal STOP!
     
     

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    RicePipe's Car Details
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    E46 or E90?
    Mr Ricepipe - 2011 520d M-sport
    Mrs Ricepipe - 2009 IS220d Sport

    Yes, BMW do own the outside lane, please move aside.
     
     

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    It's an E90!
    Right pedal go, left pedal STOP!
     
     

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    So, would anyone know what part number i need and whether I'm correct in thinking the relay for the wipers on the E90 is in the glove box, on the left hand side (as you look at it) of the fuse box?

    Thanks in advance!

    el monkey
    Right pedal go, left pedal STOP!
     
     

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    #6
    Dr of BMW gildersol's Avatar
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    As far as I can find from the diagrams, there are 2 relays (stage 1 and stage 2) and if my info is correct, they are in the main electronics junction box up under the footwell (passenger side I think)
     
     

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    monkeysthatdrink (24-06-2009)

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    #7
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    That sounds a bit trickier than I'd thought it might be so unless I'm wrong, it could well be a trip back to the dealer.

    Any idea on what amount of work is involved for them?
    Right pedal go, left pedal STOP!
     
     

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    #8
    Dr of BMW gildersol's Avatar
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    Hoping that the info I have is accurate, these relays are described as 'external, on the junction box, while there are relays which are 'internal, so they may possibly be plug in type. Maybe someone else can confirm this.
     
     

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