juan ortiz

Hi I have a 2000 s430 while driving it stays in first gear when I pull over and shut it off it won't start until it's reseted with the scanner plz help

PhazonPhobe

Unfortunately, it sounds like a major transmission problem and maybe the car is preventing further damage by disabling the car =\

tusabes

Is your tcu full of oil ?
Is yiur conductor plate bad ?

juan ortiz

The computer said it was the tcu I'm going to pull it out today fingers crossed that that's the problem

tusabes

Common issue , especially if fluid gets into it from the leaky electrical plug

If there's fluid in it clean it off with electrical cleaner , change the plug and try it
You might not need to buy a new tcu unless some of the resistors have burned out

Here's how to change the electrical plug that results in fluid entering the tcu
https://mbworld.org/forums/s-class-w...ir-videos.html