Using the GPSMAP 378/478 Keypad
.
IN Key/OUT Key
• Press to adjust map scale to show a larger area with
less detail (zoom out) or a smaller area with more
detail (zoom in).
PAGE/MODE Key
• Press to cycle through main pages in sequence and
exit a submenu page.
• Press and hold to switch between Marine and
Automotive Modes.
QUIT Key
• Press to cycle through main pages in reverse
sequence, revert to the previous value in a data
entry field, or cancel an unintended function.
ENTER/MARK Key
• Press to select a highlighted option.
• Press and hold to mark your current location as a
waypoint.
NAV/MOB Key
• Press to show the Navigate Menu.
• In Marine Mode, press and hold to start the MOB
function.
In Automotive Mode, press and hold to show the
Next Turn page and announce the next turn when
using the external speaker.
MENU/Wx Key
• Press to open the options menu for the current page.
• Press twice to show the Main Menu.
• Press and hold to toggle XM WX weather on or off
on the Map Page.
POWER Key
• Press and hold to turn the unit on or off.
• Press and release to adjust the backlighting and
external speaker volume.
ROCKER
• Press up, down, left, or right to highlight options
and to enter data, or use to pan the arrow on the
Map Page.
FIND Key
• Press to quickly search for and access user
waypoints, cities, and other items used for
navigation.
GPSMAP 378/478 Owner’s Manual
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