I changed the trans fluid and filter and the adapter plug about a month ago. The other day when I was pulling the car out I noticed some trans fluid. I put the car up on the lift and noticed the area were the adapter plug is is wet with fluid. I looked around and did not see any fluid around the gasket area. I re-torqued the pan bolts. I removed the adapter plug and fluid came out which I caught in a pan. The gaskets look good and it seemed it was seated right. I cleaned the area up and put the adapter in and button everything up. Add fluid back into the trans and took the car for a run to get the fluid up to temp and rechecked the fluid level. everything was fine. I did not see any fluid leaking. The next day I came out and there was fluid.

I have ordered another adapter plug. Does anyone have any idea of what I have done wrong? Or have something I have over looked? There are no old gaskets, as when I took out the old one they were on the adapter plug.

Thanks

 

Those transmission connectors are super super annoying. That happens to me every time I have had transmission service done if the connector was replaced. You will have to replace the connector again, it is best to buy one from a local Mercedes dealership since the list price is about 16.50. In the future it might be best to leave the previous connector alone if it is not leaking when doing transmission service.

 

I would have but it did have the old clear gaskets. I have ordered from two different supplier I will see what happens.

thanks

 

I will be doing the transmission flush next week and will heed your advice about the connector and leave well enough alone.

 

Make sure its Mercedes brand. I've tried different brands they always leak,

 

I use FCP Euro for crossfire parts. Put in 2004 mercedes slk 320 / or AMG depending on NA or SRT. Mercedes dealers never have the part here in San Diego or do not realize most xfire parts the same as an slk 320.

 

Check out the TSB: SB_21_002_05_Transmission_Leak

 

Just did the transmission fluid, filter, adapter plug and the conductor plat I have 82,000 miles i had to get a dipstick first time to look ay it and it was low and real dark almost black so it was time got my kit from FCP Euro all German parts so far no leaks yet. Quite a job when on jack stands you tube helps a lot. Xfire good for a long time now I hope.