See also:

Rear Compartment Fuse Block (CTS Wagon)
This fuse block is on the right side of the vehicle, behind the trim panel in the rear compartment. The vehicle may not be equipped with all of the fuses, relays, and features shown. ...

Climate and Air Quality
Select the Climate and Air Quality menu and the following will be displayed: - Auto Fan Speed - Air Quality Sensor - Remote Start Auto Seat Cool - Remote Start Auto Heated Seats - Auto Defog - ...

Heated Mirrors
(Rear Window Defogger): Press to heat the mirrors. See “Rear Window Defogger” under Dual Automatic Climate Control System for more information. ...