CLK500K3K4

What can be done if while driving you get an alert to Reduce Oil Level? The error is cleared when engine is restarted. I then checked the oil level using the instrumentation and it reported the oil level is fine. So what does this mean and what do I need to do?

AMG_55

that happened to me like 10 times, thats the only thing u can do.
the check the "real" oil level w/ their instruments. i had a faulty sensor

CLK500K3K4

Has the problem come back since the sensor was replaced?

Stiggs

This happened to me a few months ago when I had my oil changed at the dealership. everything was fine at first then five minutes down the road I get this red alert message and beep saying to reduce oil level. So now I'm like what the hell? I have to turn around and drive back to the dealership. Service manager said that he had to take some oil out. He also said he couldn't figure out why it did that since they put the correct amount of oil in the car. his theory was that the oil expanded as the engine got hotter and it caused the reduce oil warning. Sounds like crap to me. Wouldn't Mercedes already correct for the heat effects on the oil level?

Either way, after they removed some oil it has been fine ever since....no warnings.

AMG_55

no its ok now, y couldnt they just put a dipstick is beyond me

MarcusF

A dealer overfilled the sump??? Sounds like you got the apprentice wrench. A 911 holds "about" 11 quarts. If you change the oil in one and dump 11 quarts in, you'll probably have problems. The CLK probably has the same "issue". After draining the oil I was taught to fill it minus one quart. Oil expands when it gets hot, so I always take my cars for a short drive. I come back home after the oil is hot and then top it off. Any factory trained mechanic should know this.

M1M2M3

It has happened to me in my ML and CLK55. I think it only happens on a hot day when you are driving aggressively, especially through corners.