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Air Con control unit lock up

Discussion in 'A4/S4 forum(B5 Chassis)' started by tubtub, Nov 19, 2005.

  1. tubtub

    tubtub Member

    Jul 29, 2005
    Likes Received:
    The A/C control unit in my 2000 A4 TDI locks when I press the button to switch on the heated rear screen - no matter which button or switch I then try, nothing works. The only way to 'unlock' it is to disconnect the battery.

    I'm told I need a complete new control unit/display, part no. 8D0 820 043M B98 (I'm not sure what the B98 means).

    There's a control unit on ebay right now but without the B98 suffix; is it the right one?

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