Been noticing during the week that the oil pressure light is taking a little longer than I'd like, to go out when starting first time in the morning. Today, after two days of not starting her up, I got the "chime" and warning message. Right about then the light went off and all's well (light-wise).
Any ideas? I changed oil about three weeks ago with my usual 20W-50. Temps have not been particularly cold (50's) and the car's in the garage all night. The only thing that I can note is that the oil level is a tad over the high mark (happened when I changed the oil).
Doesn't seem like a bad sensor because on restarting after shutting down for a bit, the light goes out instantaneously. Car is a '91 535 (M30).