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. ...

Horn
Pressaon the steering wheel pad to sound the horn. ...

Auto Fan Speed
This will allow you to select the automatic fan speed. This feature sets the climate control fan speed to maintain the interior temperature. Press the MENU/SELECT knob when Auto Fan Speed is highl ...