I have the Mercedes dealer tool Star diagnostic. It's not the throttle body, and the pedal is fine. The voltages for the two potentiometers in the TB are not at the right value coming from the ecu, with the correct proms for the car. When I put the parts car proms back in I get the correct voltage but obviously no start.
I guess it's obvious, just trying to understand why the throttle body would be tied into the immobilizer when it already doesn't allow it to crank if there is an issue.