Oil maintenance required

[Ray.Balmain]

Hi guys.

I bought an is220d 2007 4 weeks ago. The week after the OIL MAINTENANCE REQUIRED light came up. So I changed the oil and filter and RESET the light. Fast forward to today and the light came back on. Does this light mean anything else or has this happened to anyone else. 

Cheers

[Mihanicos]

Assuming that there is no major oil leak  check the oil level. If no oil has been consumed, you may have a faulty oil pressure sensor. If your oil level is via a sensor and not a dipstick, then this sensor may be faulty.

If indeed the sensors are ok, you may have faulty inlet valve seals or worn piston rings. A diesel engine with worn piston rings has a low compression and it will not start. Worn inlet  valve seals would not burn so much oil in such a very short time.

Chris.

[Ray.Balmain]

Thank you. I will start with the oil pressure sensor as I do not have an oil leak and I the oil level hasn't gone down on the dip stick. 

The strange thing is that I cleared the warning light AGAIN this morning, then drove the car around lunchtime and again at 5o'clock and (touch wood) it hasn't come back on at all.

[Mihanicos]

Most likely is the oil pressure sensor. It is usually on the cylinder head. The symptoms you describe usually point to bad contacts of the oil pressure sensor.

Chris.