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Old 01-07-2013, 09:33 PM   #5
Parts Hoarding Specialist
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Join Date: Apr 2006
Location: Milton
Posts: 2,332
The thing is, the sensor wires can wiggle around a little bit, dirt and moisture can find their way into the chassis harness plugs. Corrosion can make the plug contacts weak and the circuit can open up, causing the light to go on. Check to make sure the connections are clean and tight. The light will only come on when the sensor wears through the wire, creating an open circuit. unless you're completely through a wire, your plug connections are weak.

1986 E30 325e (killed)
1986 E30 325es (died)
1988 E30 325i (rotted)
1992 E34 525i (sold)
1992 E30 318i (cabrio, Dad's)
1989 E30 325i (Mom's)
1991 E30 318i (cabrio, summer car)
1991 E30 318is (Winter car)
1992 Euro M5 (driveway decoration)
1994 E36 325is (driveway junk)
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