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  1. #1
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    Having concers for my 98'7 series??

    My brakes were locking up and stay on, so I pulled out the computer and i have these errors. # 88 pre charging pump, #81 pressure switch circuit and #105 Brake light switch? Is this the ABS unit going? Master cylinder? Thanks


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    Jearry
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    Re: Having concers for my 98'7 series??

    Sounds like the annual full flushes of the brake system has probably not been done. Sticky valves, gummy passages. You are probably looking at a refurb ABS unit. Try several serious full flushes, reset the codes and repeat until you either fix it or the same codes keep coming back.

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    Re: Having concers for my 98'7 series??

    It's locked up real good now. I'm thinking that it's the pressure sensor? BMW said: the master cylinder, is this right? Somethings telling me pressure sensor, the error from the computer. MC and pressure switch?

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