I have a 2005 ML350 and just yesterday it started to idle rough and the check engine light came on!! I turned the car off and restarted it again in about 5 min. and it ran fine. This morning it did it again!! Is there a way to check the codes on this car without bringing it into Mercedes??

 

OK, I got the codes, P0304 (Cylinder 4 misfire Detected) and P0354 (Ignition coil D primary/secondary circuit) Now what, anyone know or recognize this situation??

 

Seeing those codes , i think the problem comes from spark numeber 4 , or/and the coil.