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I have A4 avant 1.8 when I turn ignition on the oil light comes on in the test display then goes out..before I start . If I disconnect the oil pessure switch when engine is running ,nothing happens untill engine revs exceed 1500 rpm then the alert comes on after a few seconds .and goes out at idle after a few seconds . I have bought the manual on disc and it is pointing to the instrument cluster combination processor called j218 ..any Ideas welcome Bill
 

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does anyone Know if the oil light should be on prestart . after the initial cluster light check. thanks :liebe011:
 

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Oil light in the center display doesnt self check...it only comes on if you hit the self check button yourself. It only comes on if you have a sender issues, or low oil pressure. You also have a oil Level sender on the bottom of the pan...that is not for pressure, the pressure switch is located on the oil filter housing itself, a one pin connector. So you have two different oil lights.
 
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