2004 Coupe - 35,000 miles

My car has developed a shudder vibration, when it downshifts into the lower gears. If I push on the gas when this symptom occurs, it acts as if it is limp mode, but it always kicks out of it once I let off the gas and the car slows a bit. There is no whining sound and it shifts fine at highway speeds. I wanted to check the fluid level this weekend, but couldn't find the dipstick for the tranny, I also read in another post that the TCM could be an issue.

Anyone have any other thoughts as to what I may check, I wouldn't think the fluid would need changed with on 35K on the car.

 

Keep us posted, i have the same problem, I changed the conductor plate, no luck

 

There is no dipstick, Mercedes says this is a "lifetime" transmission requiring no maintenance !
There is a sealed tube at the rear of the engine for adding fluid, you can get a dipstick and resealable parts from eBay.
Automatic Transmission Fluid Level Dipstick Tool for Mercedes Benz | eBay

 

Have you had it checked for possible fault codes? The light does not necessarily come on sometimes.

 

Here's my current list of possible solutions, ranked in no particular order
1) TCM, $100, used

2) Valve body:
New sleeve kit, $66,

Sonnax 68942 05K Overlap Control Valve Sleeve Kit Fits 722 6 Mercedes Benz Trans | eBay

Master Overlap Valve Sleeve Kit - 68942-05K - Sonnax

Rebuilt valve body. $399

722.6 OEM Valve Body

3) Modify valve body , negligible cost, seems to be very successful Sprinter modification for RSN, Rumble strip noise, which I'd describe my transmission problem as

https://dieselrepairblog.wordpress.c...on-rsn-repair/

My friend that sold me the car said the problem started out very slowly and then got worse, so I suspect the valve body has leaks, that have continued to allow more and more fluid to bypass, also this seems to be a very well documented problem with the 722.6...


Please keep the forum posted if any of these repairs are tested

 

I spoke with the previous owner of my car, he said the transmission problems came on very slowly, so that leads me to think it is the Valve Body. Has anyone had any had to change it?