Registered 2012 SLK55 AMG w/P30
My garbage scow has been sporadically flashing a message on the MFD to add 1.5 quarts at next fillup. Of course, according to the dipstick (and the dipstick pulling the dipstick-myself), the monster is full up. I cannot force the message, but anecdotally, it appears to happen after I have brought the vehicle up to operating temperature and take some curves where the oil goes back and forth, you all know the type, “S“ curves. I have a warranty that will replace the sensor if I can prove that the sensor itself is the problem. The stealership is of course, no use. what I would like to know, if anybody out there has an AMG 55 R172 and STAR/DAS, is there a way to get a numeric reading from the oil level sensor and what should it be? I am making a major assumption that the oil level sensor is not a fail/pass type unit, and it actually generates a numeric value indicating level. The more numbers you can get the better (hot, cold, full – etc.) I have a suspicion that the calibration is off on the unit, so that when it gets to a level that’s a little bit less then completely full it’s reading low. Obviously, I can’t re-calibrate the sensor but if I can show that the full level is not where it should be even though it’s full, it’s a bad sensor. I would like to have this information before I talk to the (ahem) ”individuals” at the dealership. Shot in the dark here, but it’s worth a try, if you don’t ask you don’t know.