
- 7 -
PARTS OF THE R4
Audio
Jack
Power
Jack
POWER
VOL +
MENU
VOL −
USB
Eagle
Eye
Latch
Slot
MUTE/DIM
MARK
Latch
Release
Aux
Jack
KEY
PRESS TO...
PRESS AND HOLD TO ...
POWER
Turn R4 on and off.
NA
VOL +
Turn volume up (9 levels: 0 - 8; Default = 4).
In Menus, go to next item.
Quickly turn volume up or
down.
VOL –
Turn volume down (9 levels: 0 - 8; Default
= 4).
In Menus, go to previous item.
MENU
Access the Menu system.
In Menus, press to cycle through options
for the current menu item.
When in Menu mode, exit
the Menu system.
When NOT in Menu mode,
changes modes between
Highway, City, Auto, and
Advanced.