engine ecu

hello, sorry if there is already a thread about this but i could not find it . right i have a clk 230k w208 1999 and its just started to go a bit weird in the morning it starts fine and runs fine . once it warms up it will not restart if turned off it just cranks over . if i let it cool...

Ive got a S600 (HELL!) 1996 model. One of the ECU units has a fault and causes the engine to misfire. there are 2 ecu units one controling each side of the engine. currently the right ecu unit is faulty. if i replace the right ecu with the working left ecu the right side of the engine works...