loessl4

Well, it is now 2014 and I am still trying to work with Lexus to solve my ML problem. Corporate said the system operates as designed and until their was a bulletin nothing could be done. After waiting awhile for a bulletin about the problem, I had the dealer duplicate the problem with the subwoofer being unable to handle deep bass at a somewhat loud level. They contacted corporate and voila they were aware of the problem and the fix would be a new amplifier. Now the bass doesn't bottom out because there is now a very limited bass capability. The amplifier has redirected various frequencies away from the subwoofer and to other mostly front speakers. I can play the music loud but without bass. When I switch the controls to all back speakers and pump the bass up to the highest setting, very little bass sound, if any is heard! Practically no sound is coming out of the subwoofer at all. Corporate Lexus now says that the system works as designed and nothing more can be done. That is the same line I was given with the original system until I got my dealer to request a fix. If the first one worked as designed why did they try to fix it? I traded one problem for another. My dealer has worked with me well, however corporate has stonewalled me the whole way and continue to do so. Does anyone have an idea of what my next option could be? Thanks

I am also having a problem with my ML stereo, the subwoofer is bottoming out or separating on my new 2013 ES300H...depends on the song, but it seems to happen more often on xm radio, or pandora at level 43 and above. Lexus service is looking into the problem, I am waiting to hear back. It could be either amplifier settings, or the subwoofer is too shallow to handle the sound If you look at other lexus forums, there is a ongoing issue with ML system with many customers complaining. Anybody else out there with the same issue?