Transmission Leak
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MBWorld Fanatic!
Joined: Jan 2007
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ML550
Transmission Leak
Yesterday while the car was up on the lift as I was replacing both engine belts (supercharger belt - piece of cake; accessory drive belt - not as easy) I noticed the bottom of the rear engine cover plate had a thin coating of what appear to be an oily substance. I removed the cover and noted the bottom of the transmission oil pan was pretty well slimed, with a couple of drips waiting to drop off the pan. At first I thought the pan gasket might be the problem, but tracing the fluid to it's source led to what I think is the plug adaptor on the tranmission case. It's number 130 on the drawing:
After doing some reading up on this issue, it's apparently a fairly common problem and the part itself is on its third supercession. Anyway, since the car is under factory warranty, I'm going to take it in and let them replace it for me.
My question, though, is if anyone has experienced this leak, and whether the dealer stepped up to the plate and did a full tranny fluid and filter replacement as part of the repair? That's what I'm going to ask them to do since they will have to drain some fluid to make the repair.
After doing some reading up on this issue, it's apparently a fairly common problem and the part itself is on its third supercession. Anyway, since the car is under factory warranty, I'm going to take it in and let them replace it for me.
My question, though, is if anyone has experienced this leak, and whether the dealer stepped up to the plate and did a full tranny fluid and filter replacement as part of the repair? That's what I'm going to ask them to do since they will have to drain some fluid to make the repair.
Thread Starter
MBWorld Fanatic!
Joined: Jan 2007
Posts: 1,359
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ML550
A quick follow-up.
Had the car at the dealer today to check out the source of the leak. They confirmed it was plug adapter that I suspected (part no. 203-540-02-53). The part was replaced under warranty, so all is good. The transmission fluid and filter replacement will be a DIY project for me in the near future.
Since most '05's and '06's are likely still under the original factory warranty, I would encourage owners to get their car up on a lift, remove the rear engine compartment panel, and inspect the plug adapter on the tranmission case for leakage. The part is located at the front passenger side of the case. According to my service writer, it's a fairly common issue, and one that has the potential to create other problems if the leak becomes too severe.
Had the car at the dealer today to check out the source of the leak. They confirmed it was plug adapter that I suspected (part no. 203-540-02-53). The part was replaced under warranty, so all is good. The transmission fluid and filter replacement will be a DIY project for me in the near future.
Since most '05's and '06's are likely still under the original factory warranty, I would encourage owners to get their car up on a lift, remove the rear engine compartment panel, and inspect the plug adapter on the tranmission case for leakage. The part is located at the front passenger side of the case. According to my service writer, it's a fairly common issue, and one that has the potential to create other problems if the leak becomes too severe.
Out Of Control!!
Joined: Jul 2003
Posts: 15,901
Likes: 4,630
From: North Scottsdale, AZ
'71 Pinto
MBUSA released service campaigns entitling free repair even out of warranty. Have dealer pull VMI to see if VIN is included.
2004-05 models 163/170/199/203/209/211/215/220/230/463 – Service Campaign 2006020008
2005-07 203/209/211/219/230/463 – SC 2008120008
722.6 transmission, if not included in either SC and still under warranty reference DTB P-B-27.00/47f.
2004-05 models 163/170/199/203/209/211/215/220/230/463 – Service Campaign 2006020008
2005-07 203/209/211/219/230/463 – SC 2008120008
722.6 transmission, if not included in either SC and still under warranty reference DTB P-B-27.00/47f.
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MBWorld Fanatic!
Joined: Jul 2010
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From: Colorado
07' SL65, 04' E55, 03' Evo8, 08' GSXR, DSM's...
/\ I am having this plug replaced now as we speak since it was just starting to slightly drip oil. Unfortunately Mercedes said my VIN is not included in the service campaign.
Aaron
Aaron
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Joined: May 2014
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E320 v6 w21e320 2004 w2111 2004
i got this leak on my e320 2003 and i have cleaned it with petrol all over to get oil out of the way and the cover was full of sand and oil celaned it also to know where exactly it comes from, and turned out after a week the leakage comes from between the engine and the transmission not sure from where but it that part, any help on this please?
