In the six speaker 2011 (like mine), the vibrating exciter headliner vibrator crummy thingies are on the rear channel and apparently the rear pillar wires are not connected. See the thread here:The doors, front speakers, and transducers in the roof are hooked to the front two channels. The subwoofer and rear pillar speakers are hooked to the back.
Have you considered changing the factory speakers? I looked at the "premium" JBL system at the dealer yesterday, and the speakers just made me sad. Here is my current setup in my 2011:well darn i was hoping that was the reason for the horrible quality of the jensen
To be fair, if I remember correctly for 2011 the base head unit is a Pioneer while the upgrade is JBL.Gee, did Toyota REALLY build and install a head end unit that uses loudness compensation all the way up to clipping?