Horn
Pressaon 
the steering wheel pad
to sound the horn.
See also:
Driving Characteristics and Towing Tips
WARNING
The driver can lose control when pulling a trailer if the correct equipment is
not used or the vehicle is not driven properly.
For example, if the trailer is too heavy, the brakes may not ...
On-Route
Select the On Route screen button to display all events ahead on the current
active route. If no traffic events have been reported on route, No Traffic Events
Reported On route displays.
Name
...
Auxiliary Devices (Radio with CD/DVD and MEM)
The optional AUX input allows portable devices to be connected using the
3.5mm (1/8 in) input jack or the USB port.
Portable devices are controlled by using the menu system described in
Operation ...