SL/R230: Not sure what to do about transmission.
Thread Starter
Junior Member
Joined: Sep 2019
Posts: 43
Likes: 5
2006 SL55 2007 ML320
Not sure what to do about transmission.
So these are pictures from inside me trans from this June. The car was dropping out of drive while driving and trans hot. I had the same issue the summer before. I dropped the pan and looked similar. I had changed the conductor plate both times and it would drive normal again. These pictures are one year later (this June) and only about 500 miles. I have no idea where the metal is coming from. Do you think I should pull the trans out (I'm confident dropping the trans) and bring into a shop, or get another one to put in. The car has 102,000 miles. 2006. We live in Wisconsin and only drive it in the summer, on weekends.
Thank you for helping me decide.
MBWorld Fanatic!
Joined: Sep 2007
Posts: 1,481
Likes: 310
95 SL600
That’s a difficult one for the 722.9 which you have. The conductor plate is part of the drive authorization theft deterrent. If you get a used one, that conductor plate needs to be changed with the old one, or you need to get a new conductor plate programmed to your vin. These transmissions have some issues, and conductor plates are one large one. I would see how much a rebuild is and start from there
Thread Starter
Junior Member
Joined: Sep 2019
Posts: 43
Likes: 5
2006 SL55 2007 ML320
That’s a difficult one for the 722.9 which you have. The conductor plate is part of the drive authorization theft deterrent. If you get a used one, that conductor plate needs to be changed with the old one, or you need to get a new conductor plate programmed to your vin. These transmissions have some issues, and conductor plates are one large one. I would see how much a rebuild is and start from there
MBWorld Fanatic!
Joined: Dec 2005
Posts: 4,057
Likes: 341
From: NJ
2009 SL63 AMG
Sorry, that much wear material after 500 miles is scary.
Rebuild or replacement, unfortunately.
If you have a local shop experienced with these transmissions, great.
Might be worth checking these guys out as well: https://southernhotrod.com/
He has a 722.6 in there (SL55).
Rebuild or replacement, unfortunately.
If you have a local shop experienced with these transmissions, great.
Might be worth checking these guys out as well: https://southernhotrod.com/
That’s a difficult one for the 722.9 which you have. The conductor plate is part of the drive authorization theft deterrent. If you get a used one, that conductor plate needs to be changed with the old one, or you need to get a new conductor plate programmed to your vin. These transmissions have some issues, and conductor plates are one large one. I would see how much a rebuild is and start from there
