I think i might be to late now. i wish i knew this before i bought the car cause i really wanted to ml system. n i would of special ordered the car. i'm gonna go back to dealer n see what they can do if anything at this point.
Lexus should def. look into what is causing your sub to blow. itz kind of hard to believe u got to bad subwoofers. their might be a bad connection where your sub is gettin to much power.
DO u guys have 06 IS. Cause i just bought mine a few weeks ago n they told me they dont put ML systems in the IS. They did for special orders last year but not no more.