So I got this 2009 Highlander Limited and I just bought it as a used car. It says in the manual it has auto-dimming rear-view mirror with a compass. But when I press the ON button, nothing happens. I also don't see the compass. When I press the power button, the light just turns green but nothing happens. Even if I try to put something to block the sensor in the back of the mirror, nothing happens. Any thoughts?:help: