i checked the oil level again, it's lower than before. It could be the level too low and when the car was driving at high speed, insufficient oil level triggered the warning lamp...
Further, I also found this "switch" cracked and leaks oil.
Can anyone advise me what this "switch" is??
I think I better replace it ASAP, but need some help naming this part.
'74 W114 230.6
'87 W201 190E 2.3-16
'97 W210 E320 Avantgarde