Louczar

I had been searching coast to coast for 2 months for my RC350 before I found it.  Autotrader was my first search point every day.

I can tell you that you that most of the cars that have the ML stereo are not specified as a category.  I would have to look at the pictures of the interior to check for the "ML" stereo.  I would have liked finding a car with ML.  But, I wanted other options more.

Even though I have a RC 350 (not a RX 350), I have had a similar experience.  For me, it was when traction control kicked in.  The motor loses some power and acts like a hesitation in acceleration.  I started paying attention to the dashboard when in those scenarios that would exhibit the issue.  That is when I saw the traction control light come on.  I would say it was more of a 1-2 second delay before accelerating hard again.  

Have you taken a look at the dash during the time the issue occurs?  Have you tried to turn off traction control and see if the problems occurs?  Hope this helps...