Our ML ran out of washer fluid the other day and the dash sensor did not come on. Odd that it came on several weeks ago. I would not be concerned except all of this is on the same can bus and may be a sign of other things.

Am I barking up a tree or should I just ignore it for now. Any resistance tests I can do on the sensor?

thanks!

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John
2001 ML 320
1988 560 SL
2009 Toyota Tundra TRD
1992 400 E (sold '07) (bought back, '13)
2008 ML 350