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AWD DISABLED - DEM-P188914 followup XC90

posted by  us50931 on  Sat Oct 1 03:13 CST 2011
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last visit: Wed Jan 30 03:56 CST 2013
[RELATED]

this is a follow up post to my previous one regarding random warning messages for the AWD Disabled. The car was not throwing ODB2 codes but the dealer pulled the above code with VIDA. Apparently the differential electronic module is saying my AWD pump malfunctioning. In hindsight, I suspect this was caused by the fact I added one new tire to the rear after having a blowout. The car had new tires (less than 10K miles) and the tire dealer said I would be fine. Dealer is quoting $850 to repair AWD issue.

Has anyone had this repair before and is it possible just the DEM is bad versus needing to replace the entire AWD pump? Also, I am considering just replacing the tires for now and seeing if the warning message returns--the theory being that the current poor tire set up is causing the DEM to flash codes, but the pump is still working properly. Might just new tires resolve the issue?

Many thanks to this resourceful group.








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    AWD DISABLED - DEM-P188914 followup XC90

    posted by  us50931 on  Sun Nov 13 03:50 CST 2011
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    last visit: Wed Jan 30 03:56 CST 2013
    [RELATED]

    I ended up putting on a new set of four tires and ran them for 1,000 miles. The AWD pump issue persisted, so that was proof to me (even though the dealer had told me it would) that the error message was just not a diagnostic red flag based on poor tire wear. I had the dealer replace the awp pump/seal for $630.







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