I finally got around to installing my Kenwood DMX905S into my 4R Limted. Pleasant surprise after fiddling with the settings... it now unlocks all doors with the smart key just by grabbing the handle. Not a big deal overall but it bugged me there was no setting to allow me to change that.
Overall the audio quality is meh. I hate this JBL system. So much so that I may be doing an audio system sooner than later.