E23 SI Board Battery Replacement

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  1. E23 SI Board Battery Replacement 
    #1
    Bimmer Fan
    Car Details
    belugablack's Car Details
    Model of Car:
    728i A SE E23
    Year of Manufacture:
    1986
    Transmission Type:
    Automatic
    Car Body Type:
    Saloon

    Join Date
    Jun 2010
    Location
    Worcestershire
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    I've just bought my 3rd E23, a 1986 728i A SE which will be used as a daily driver. My only gripe is at present only the speedo and odometer work. I have no service indicator lights on so from researching today am thinking my first port of call should be replacing the SI Board batteries as these can put the gauges out too apparantly. Could duff SI batteries indeed cause my rev-counter, fuel gauge, temp gauge and econometer all to pack up?

    There seems to be conflicting opinions as to which batteries to use, AA or 3V, NiCad or NiMh and a US rebuild company uses lithium batteries etc, some say source Varta brand items as they'll last longer and not leak like cheaper brands... can anyone suggest where to source the best batteries from, and preferably online - I understand they must be rechargeable?

    Secondly, if it transpires my SI board is ruined from leaking batteries, does anyone know of a UK-based company that can rebuild SI boards please? I know of Program Inc in the US, but this will involve high shipping costs and delay.

    Just out of interest I will call my BMW main dealer for a price on a new SI board, if indeed they're still available as sometimes they pleasantly surprise you!

    Daniel
     
     

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  3.  
    #2
    BMW Guru
    Car Details
    mark@vorny.co.uk's Car Details
    Model of Car:
    911 C2S
    Year of Manufacture:
    2009
    Transmission Type:
    Automatic
    Car Body Type:
    Coupe
    mark@vorny.co.uk's Avatar
    Join Date
    Sep 2008
    Location
    Appleby Magna, Derbyshire
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    Can anybody offer the OP any advice ?
    2013, Porsche 911 Carrera 4S, PDK, Sports Exhaust, Chrono, etc, etc

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