[mmarine1976]

I have the 08 Limited w/Nav and there appears to be a speaker in the rear lift gate. I however cannot find out how to turn it on. I have adjusted the sound setting to go as far as possible to the rear, but still no luck. Is there a setting or button that I am missing? Thanks for the help.
Mike

 

[CBJ Nut]

That is the subwoofer. Turn up the bass and you'll hear it.