Gilly, it looks like the oil level sensor is leaking oil. I have found a picture of the o-ring for this sensor. Can the 0-ring be replaced WITHOUT removing the oil pan?
Thanks for you reply.

In a word, No. Been there and done that.

__________________
1973 280SE 4.5 (Sold)
1984 LWB 280GE (Sold)
2000 G500 NMLE - "Deep Throat"
2007 ML320 CDI (Sold)
2010 Porsche Cayenne S Transsyberia TipTronic (Sold)
2010 Audi Q7 3.0 TDI (Sold and Sorely Missed)
2014 ML350 BTC
2015 Audi Q7 3.0 TDI (On Order)

Forget the "O" ring replacement and just put a whole new sensor in the part is about $135 and carries the same labor charge as the ring. My dealer tried the ring replacement and it leaked even worse so in went the new sensor.

-Kevin

I did the o-ring by itself; and it hasn't leaked since. Obviously, different situations.

__________________
1973 280SE 4.5 (Sold)
1984 LWB 280GE (Sold)
2000 G500 NMLE - "Deep Throat"
2007 ML320 CDI (Sold)
2010 Porsche Cayenne S Transsyberia TipTronic (Sold)
2010 Audi Q7 3.0 TDI (Sold and Sorely Missed)
2014 ML350 BTC
2015 Audi Q7 3.0 TDI (On Order)

Probably the same situation but poor craftsmanship on my dealer's end with first "O" replacement, so I wasn't about to go the the ring replacement scenario again and just had them put in a new sensor since they were going down that same path again. Two things could of happen they screwed up putting in the new ring or the new ring would not seat properly with the old part.....who knows..... but it doesn't leak now plus I got a free oil change because it was their screw up.

-Kevin

I did the job myself. Perhaps that why the workmanship was better.

__________________
1973 280SE 4.5 (Sold)
1984 LWB 280GE (Sold)
2000 G500 NMLE - "Deep Throat"
2007 ML320 CDI (Sold)
2010 Porsche Cayenne S Transsyberia TipTronic (Sold)
2010 Audi Q7 3.0 TDI (Sold and Sorely Missed)
2014 ML350 BTC
2015 Audi Q7 3.0 TDI (On Order)