Originally Posted by JustinX

Correct, the car will not start or turn over because of the block form indicator.
RCM was out.
Key was turned on, thus deploying rear wing and traction control lights.
Installed repaired RCM, did not fix.
Took apart console to find release button for trans.
Wrong button was pushed on upper pass side shift assembly (ignition lock out) now key won’t come out.
Towed to dealer (they said could fix) could not communicate with vehicle. They towed to their flagship dealer. Could not communicate either.
Neither dealership had the integrated software package that is supplied by Mercedes.
Having it towed to a dealership south of Chicago that has this software package. So, by this Monday I’ll have $600.00 in towing bills. Hopefully I’ll be able to drive it home from this dealer. Plus side, car was only $9.00 to add it on to insurance every 6 months.