Q7 MK 1 Discussion Discussion forum for the Audi Q7 SUV built from 2005 to 2015

Low Oil Pressure Warning

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Old 03-04-2017, 10:50 AM
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Default Low Oil Pressure Warning

I got the red low oil pressure warning today in my Q7.. I figured I would start with the oil pressure switch, which I removed. Was covered in oil, also the side where the electrical connector goes was full of oil. I am hoping this is a sign of a faulty switch? I would like to test the pressure manually while I have the switch off, is this an acceptable place connect an oil pressure guage? I am guessing yes, just want to verify. Thanks, Joe
Old 03-04-2017, 08:11 PM
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Default I agree with you...

...on my old 356 b convert I used to check the oil pressure at the pressure sensor when I wanted to know actual values. If yours was oily and leaking I would bet that was the culprit!
Old 03-05-2017, 07:48 AM
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Oil pressure is not design to leak, a bad oil pressure switch will be leaking from the switch.
Old 12-10-2019, 12:31 PM
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Oil pressure warning might mean one of five things:
Bad oil pressure sensor/switch, low oil level, clogged oil filter, clogged oil passages in the engine or engine wear.
This video might be helpful:
Old 12-12-2019, 04:30 AM
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oil pressure "switch" is notorious on the 3.0 TDI.
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