I just started seeing this same situation on my 603 in the last few weeks, although, its not yet to the point where it annoys me.

If replacing the sensor won't fix the problem, I remember seeing the sensor wire on my 560 grounded out to keep the light off, so I guess thats the most simple fix...

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1980 500SE/AMG Euro
1981 500SEL Euro
1982 380SEL
1983 300TD
1983 500SEC/AMG Euro
1984 500SEC
1984 300TD Euro
1986 190E 2.3-16
1986 190E 2.3
1987 300D
1997 C36 AMG
2003 C320T 4matic

past: 1969 280SE 4.5 | 1978 240D | 1978 300D | 1981 300SD | 1981 300SD | 1982 300CD | 1983 300CD | 1983 300SD | 1983 380SEC | 1984 300D | 1984 300D | 1984 300TD | 1984 500SEL | 1984 300SD | 1985 300D | 1986 300E | 1986 560SEL | 1986 560SEL/Carat | 1987 560SEC | 1991 300D 2.5 | 2006 R350

John, please advise if a new sensor does the trick. Also, how low do you typically have the level?

I wouldn't want to lose the capability of the light. It could be a life saver if an oil cooler line lets go. I sure would like to get it to stay out with the oil level at the 1/4 point.

My oil light flickers on and off with left turns. PO replaced the sender-no change. Have read in old posts that the only fix is a new instrument cluster-to replace the defective 20 second delay gizmo. Seemed pretty radical, would like to know what part of the instrument cluster is defective and replace it.

I had the same problem with the oil light, bought a “T” fitting for the oil switch and the tubing for the mechanical gauge with a 1 inch diameter dial and it’s hiding at the side of the steering column and also keep the idiot light, the reading is still at 3 bars on the mechanical gauge.
Hope this helps.

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2000 430 ML
2005 S500
87 300 D
61 300 restoring