Got in my wife's TL the other day and there was hardly any bass coming out of the stereo. Checked the settings and the subwoofer was off. I don't now how it was turned off and now I can't figure out how to get it back on. Please Help.

 

Check to make sure that your center and rear channels are "on". When one (or both?) of these gets turned off, it automatically turns off the sub. I just ran into this recently myself.

See if that works...