I have mbusa repair dvd and dealer estimate indicates the exact part#that has to be replaced. The ecu and valve body are one unit on this one. P#220-270-27-06 is updated part# is named "electrohydraulic control unit". THey really are one combined part. I also spoke to folks at below and gave them my vin that this is correct part of many versions of ecu for my vehicle.
My read of diag part of manual concurs with dealer diagnosis. But there is risk if i do the job that if they were wrong that i am wasting my time and money.
I would post instructions but it is copy righted material and i want to honor copyright. Just me but, I like to use these forums to get sense of what goes wrong and other fun stuff not to exchange copyrighted stuff.
It is very easy job. unbolt pan, remove filter, unbolt ecu/valve body, reverse. I would leave overflow in place and tip back method to drain and remove pan. Manual indicates size of stream outflow after pumping in 6 quarts that is full. I would probably use small hand pump with slightly smaller outside diameter tube inserted into overflow tube to refill.
Manual indicates that afterwards the transmission needs to be adapted, not programed or coded. I would therefore be taking a bit of risk that car would not run. I have a feeling it will be fine, and i simply need to do gas pedal press down thingy to reset.
Since I am currently still finalizing dialogue with dealer on who will pay I will firm up the charge for "adapting". The way i look at is that I will have $1k in for parts. Even if i have to tow to dealer and pay $100 for coding I am saving $1300. After I paid $700 for them to replace front sam to make my washers spray, mbusa and dealer said they would work with me on the next repair. So If I can nego them to between $1000 and $1200 I would let them do the job so i have 1 yr warranty and their risk that it is right job to do.
The other dilemma is that since I removed, cleaned and reinserted the 5 pin connector 2 days ago it has not acted up. So you never know it could have been that. I know doubtful. But i had random misfires on both 2001ml320 and 2000ml350 and all it was on both was needing to reseat plug wires to coils.
Keeping this vehicle means some continued worry about balance shaft failure. But the boss (wife) says fix it this one last time and any other big repair and it gets dumped. I don't think she understands the nuance that since the problem is intermittant i could trade now and save the grand. But then again maybe she does and she is right and i should keep.
cmitch, pm me if you want your # and I can call you back if you want to chat more...It is a dilemma as I as looking at 4 door infiniti before i bought this one. But my family snowboards and I don't want roof rack on for the long minn winters.