I purchased a 1997 e320 recently with the transmission stuck in limp mode.1st gear and reverse only.So I changed the conductor plate on top of the valve body and the associated plug.Installed a new filter and new oil.I purchased the measuring tool to accurately measure the fluid level.Okay.So I go for a test drive and it up shifted one time and went back to limp mode.there are no codes with my autotap 3.1 scan tool,but on the driver information center it reads "Lamp Defective" and when that came back on is when the transmission went into limp mode.So my question is should I change the transmission control module next,and does that unit have to be programmed or is it just a straight swap.I noticed that the right turn signal doesnt work,so I changed the bulb.It Still dont work.So the defective lamp isn't that. I was also thinking ECM ...What do you guys think? My alldatadiy service manual sucks so I got a refund.I'm also looking for factory service manual for this vehicle,any reccommendations? Thanks much!