That's how it satrted on my 2010 CX9 GT. Engine light (solid) would come on andfor some reason will disappear everytime i bring it to the dealership for checking. Twice, thy've told me that since there was no engine check light.. they could not diagnose anything. My reader, so as Auto zone's says its the ECM. I had the reset it, thinking it might be just a glitch, but this past two weeks, it gotten bad. Rough start up, engine would die after starting, 2 or 3 times i have to re-start it. Worst is, engine would turn off while driving!!! Scared the s*** out me! Still, dealership said they couldn't find anything, until one of their guys was getting it from their parking lot( after they checked it...again) engine died while she's backing up. They replaced the PCM...as ive said, reader says ECM, honestly dont know the difference between the two. To make long story short, now driving my CX9 again for 1 week now since they replaced the PCM, oonly issue i noticed, which only happened one time, is its changing gears, it feels like theres a delay and the engine is going to die again feeling. I just hope they really fix the real problem.