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Basically the car shifts hard between 1-3 and back 3-1.
Also if I am in a traffic jam driving in 1st gear and slowly braking, it feels like I am on the edge of turning the engine off the whole time because of low rpms.
(I know that's normal but the car shakes a bit too much and too often when driving in that condition).
Should I get the transmission valve body and the conductor plate replaced? Or is it something else?
Also I am not sure if it's a 722.6 or a 722.9 transmission.
I would highly advise to first read all possible transmission codes. If no codes I would drop the valve body and take all the shift spools out (8) and inspect the O-rings and clean all the screen filters on them also.. brake cleaner or just soaking them and clean the screens. I can give you the sizes and where to order or just search my recent post and you will see the info . MB only sells the shift spools with the Orings at something like $75-100 per. Orings with shipping will be around $25-30 for all 8 sets.
I rebuilt my 2008 with new Orings after some Limp mode issues and cleared it up and also helped the shifting . The Orings get cracked and allow pressure to get by them or Orings fall off completely . In the picture with the blue Oring broken was on one of the brake controls and the error was “trying to put two gears in at once”.
Also my experience with 7 speeds..2006,08,09,11 the worse by far was the 2006 in a ML500. We had to send the board off and get a few sensors replaced.. We constantly had errors popping up. There is a source in Jersey with a great turn around time.. I can get that info from my son he sent the board.
Ok good luck and let me know if I can help???
Last edited by vesiadog; May 15, 2024 at 11:39 PM.
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Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.
