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Garmin®, the Garmin logo, ANT+®, Auto Lap®, AutoLocate®, GPSMAP®, inReach®, TracBack®, VIRB®, and Xero® are trademarks of Garmin Ltd. or its subsidiaries, registered in the USA and other
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See the Important Safety and Product Information guide in the
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information.
Device Overview
Internal Iridium® and GNSS antenna
Power button
SOS button
Buttons
Micro-USB port (under weather cap)
Flashlight
microSD® card slot (under weather cap)
Mounting spine
Status LED
The status LED indicates the device status.
Sending inReach® messages
Unread inReach messages
Buttons
FINDSelect to open the search menu.
MARKSelect to save your current location as a waypoint.
QUITSelect to cancel or return to the previous menu or page.
Select to scroll through the main pages.
ENTERSelect to choose options and acknowledge messages.
Select to control the current activity recording (from the Map,
Compass, Altimeter, and Trip Computer pages).
MENUSelect to open the options menu for the page that is
PAGESelect to scroll through the main pages.
Select , , , or to select menu options and move the
Turning On the Device
Locking the Keys
You can lock the keys to prevent inadvertent key presses.
Turning On the Backlight
Adjusting the Backlight
1
2
currently open.
Select twice to open the main menu (from any page).
map cursor.
Select to zoom in on the map.
Select to zoom out on the map.
Hold .
Select > Lock Keys.
Select any key to turn on the backlight.
The backlight turns on automatically when alerts and
messages are displayed.
Select to open the status page.
Use and to adjust the brightness.
TIP: You can select NV to reduce the backlight intensity for
compatibility with night vision goggles.
Charging the Device
NOTICE
To prevent corrosion, thoroughly dry the USB port, the weather
LED ActivityStatus
Double flashing greenYou have an unread message.
Flashing greenThe device is in expedition mode.
Flashing redThe device does not have a clear view of the
sky.
The device is below 10% battery power.
Alternating red and green The device is in SOS mode.
Status Icons
ANT+® technology status
GPS signal strength
Charging battery
Charging complete
Bluetooth® technology status
Wi-fi status
Getting Started1
cap, and the surrounding area before charging or connecting to
a computer.
NOTE: The device does not charge when it is outside the
approved temperature range (Specifications, page 18).
Lift the weather cap .
1
Plug the small end of the power cable into the charging port
2
on the device.
Plug the other end of the power cable into a compatible AC
3
power adapter.
Plug the AC power adapter into a standard wall outlet.
4
Charge the device completely.
5
Saving Energy While Charging the Device
Connect your device to an external power source.
1
Hold the power button until the screen turns off.
2
The device goes into a low power, battery charging mode,
and the battery gauge appears.
Charge the device completely.
3
Activating the Device
Before you can use the inReach features of your GPSMAP 66i
device, you must activate it.
Create an account, and select a satellite subscription at
1
explore.garmin.com.
Turn on the device.
2
NOTE: You must enter the device IMEI number and AUTH
code to complete the online portion of activation before
heading outdoors.
Follow the on-screen instructions.
3
From the main menu, select Activate, and go outdoors to an
4
open area with a clear view of the sky.
Wait while the device communicates with the Iridium satellite
5
network.
NOTE: It may take up to 20 minutes to activate your device.
The device must send and receive several messages, which
takes longer than sending a single message during regular
use.
Iridium Satellite Network
Your device requires a clear view of the sky to transmit
messages and track points over the Iridium satellite network.
Without a clear view of the sky, your device attempts to send the
information until it acquires satellite signals.
TIP: For the best connection with satellites, hold the device with
the antenna pointed toward the sky.
inReach Features
WARNING
Messaging, tracking, and SOS functions require an active
satellite subscription. Always test your device before you use it
outdoors.
Ensure you have a clear view of the sky when using the
messaging, tracking, and SOS functions, because these
features require satellite access to operate properly.
To get the most out of your GPSMAP 66i device, you should
activate it. Activating the device allows you to use inReach
features, including messaging, SOS, tracking, and inReach
Weather.
Messages
Your GPSMAP 66i device sends and receives text messages
using the Iridium satellite network. You can send messages to
an SMS phone number, an email address, or another device
that uses inReach technology. Each message you send includes
your location details where allowed.
Sending a Preset Message
Preset messages are messages that you created at
explore.garmin.com. Preset messages have predefined text and
recipients.
From the Messages page, select Send Preset.
1
Choose a preset message, and press ENTER.
2
Press ENTER to send the message.
3
Sending a Text Message
From the Messages page, select New Message.
1
Select an option:
2
• To start with a pre-written message, select Send Quick
Text.
NOTE: You can add and edit quick text messages on the
Garmin Explore™ website.
• To write a custom message, select Type Message.
Choose recipients from your contacts list, or enter a
3
recipient's contact information.
After you have finished your message, select Send
4
Message.
Using Keyboard Shortcuts
• To select the first autocomplete option, select FIND.
• To cycle through keyboards, select MARK.
• To change character case, select PAGE once, and to turn on
caps lock, select PAGE twice.
• To insert a backspace, select .
• To insert a space, select .
Replying to a Message
From the Messages page, select a conversation.
1
Select Reply.
2
Select an option:
3
• To write a custom message, select Type Message.
• To start with a pre-written message, select Send Quick
Text and select a message.
When you have finished your message, select Send
4
Message.
Checking for Messages
When you send a message, your device listens for replies for 10
minutes. The device also checks for new messages every hour.
When you are using the inReach tracking feature, your device
automatically checks for messages at your tracking interval.
NOTE: Your device must be in view of a satellite at the time of
the listen to receive messages.
You can force a check for messages by manually checking for
messages, sending a message, or sending a track point. During
a check, your device connects to satellites and receives
messages waiting to be sent to your device.
From the main menu, select inReach Utilities > Mail Check
> Check Mailbox.
Viewing Message Details
Select Messages.
1
Select a conversation.
2
Select a message.
3
Select the information tab.
4
Navigating to a Message Location
When you receive a message from another device with inReach
technology, the message may include location information. For
these messages, you can navigate to the location from which
the message was sent.
Select Messages.
1
Select a conversation with location information.
2
Select the map tab.
3
Select Go.
4
2inReach Features
Including Location Coordinates in a Message
If you are sending a message to a recipient who may not have
internet access, you can include your location coordinates in the
message. For example, if your recipient has an older model cell
phone that does not support viewing maps or is outside of a
mobile data coverage area and cannot view a web page.
From the Messages page, select New Message > Send
1
Location.
Enter one or more recipients.
2
If necessary, enter a message.
3
Select Send Message.
4
Deleting Messages
From the Messages page, select a conversation.
1
Select MENU > Delete Thread.
2
Messages Settings
Select Setup > Messages.
Ring Until Read: Sets the device to ring until you read a new
message. This feature is helpful if you are in a noisy
environment.
Notifications: Alerts you to incoming inReach messages.
Tracking
You can use the tracking feature to record track points and
transmit them over the Iridium satellite network at the specified
send interval. Track points appear on the Garmin Explore
website and the MapShare™ tracking page.
Starting Tracking
From the main menu, select Tracking > Start Tracking.
NOTE: Starting the Tracking feature also starts the recording
controls.
Stopping Tracking
From the Tracking page, select Stop Tracking.
Sharing Your MapShare Web Page
You can share a link to your MapShare web page with other
people. The system automatically adds text, including link
information, to the end of your message.
From the Tracking page, select Send MapShare > Share.
1
Choose recipients from your contacts list, or enter a
Select Setup > Tracking.
Auto Track: Sets the device to start tracking when you turn on
the device.
Moving Interval: Sets the frequency at which the device
records a track point and transmits it over the satellite
network when you are moving. If you are a professional
customer, you can specify the interval when you are
stationary.
SOS
During an emergency, you can use your GPSMAP 66i device to
contact the Garmin® International Emergency Response
Coordination Center (IERCC) to request help. Pressing the SOS
button sends a message to the Garmin IERCC, and they notify
the appropriate emergency responders of your situation. You
can communicate with the Garmin IERCC during your
emergency while you wait for help to arrive. You should only use
the SOS function in a real emergency situation.
Initiating an SOS Rescue
NOTE: While in SOS mode, the device cannot be turned off.
Lift the protective cap from the SOS button .
1
Hold the SOS button.
2
Wait for the SOS countdown.
3
The device sends a default message to the emergency
response service with details about your location.
Reply to the confirmation message from the emergency
4
response service.
Your reply lets the emergency response service know that
you are capable of interacting with them during the rescue. If
you do not reply, the emergency response service will still
initiate a rescue.
For the first 10 minutes of your rescue, an updated location is
sent to the emergency response service every minute. To
conserve battery power after the first 10 minutes, an updated
location is sent every 10 minutes when moving, and every 30
minutes when stationary.
Sending a Custom SOS Message
After pressing the SOS button to initiate an SOS rescue, you
can reply with a custom message using the SOS page.
From the main menu, select SOS > Reply.
1
Select Type Message to compose a custom SOS message.
2
Select Send Message.
3
Your reply lets the emergency response service know that you
are capable of interacting with them during the rescue.
Canceling an SOS Rescue
If you no longer need assistance, you can cancel an SOS
rescue after it is sent to the emergency response service.
Lift the protective cap, and hold the SOS button.
1
Select Cancel SOS.
2
When prompted to confirm your cancellation request, select
3
Cancel SOS.
Your device transmits the cancellation request. When you
receive a confirmation message from the emergency
response service, the device returns to normal operation.
Testing the Device
You should test the device outdoors before using it on a trip to
ensure your satellite subscription is active.
From the main menu, select inReach Utilities >
Subscription Test > Test.
Wait while the device sends a test message. When you
receive a confirmation message, your device is ready to use.
Syncing inReach Data
You can sync data from your Garmin Explore account to your
device using the Garmin Explore app. After you make edits to
your data, such as contacts, preset messages, or quick text
messages, you must sync them to your device using the mobile
app.
Testing the Device3
Open the Garmin Explore app.
Changes made to data such as collections, waypoints,
routes, and tracks update automatically.
You can now sync your data to your GPSMAP 66i device.
Contacts
You can add, delete, and edit contacts on the GPSMAP 66i
device.
Adding a Contact
Select Setup > Contacts > New Contact.
1
Select an item to edit.
2
Enter the new information.
3
Editing a Contact
Select Setup > Contacts.
1
Select a contact.
2
Select an item to edit.
3
Enter the new information.
4
Deleting a Contact
Select Setup > Contacts.
1
Select a contact.
2
Select MENU > Delete Contact.
3
Using the Main Pages
The information needed to operate this device is found on the
main menu, map, compass, and trip computer pages.
Select PAGE.
1
Select the active main page.
2
Opening the Main Menu
The main menu gives you access to tools and setup screens for
waypoints, activities, routes, and more (Main Menu Tools,
page 10, Setup Menu, page 14).
From any page, select MENU twice.
Map
represents your location on the map. As you travel, moves
and displays your path. Depending on your zoom level, waypoint
names and symbols may appear on the map. You can zoom in
on the map to see more detail. When you are navigating to a
destination, your route is marked with a colored line on the map.
Changing the Map Orientation
From the map, select MENU.
1
Select Map Setup > Orientation.
2
Select an option:
3
• Select North Up to show north at the top of the page.
• Select Track Up to show your current direction of travel at
the top of the page.
• Select Automotive Mode to show an automotive
perspective with the direction of travel at the top.
Measuring Distance on the Map
You can measure the distance between multiple locations.
From the map, move the cursor to a location.
1
Select MENU > Measure Distance.
2
Select additional locations on the map.
3
Map Page Settings
From the map, select MENU.
Stop Navigation: Stops navigating the current route.
Map Setup: Enables you to open additional map settings (Map
Settings, page 4).
Measure Distance: Allows you to measure the distance
between multiple locations (Measuring Distance on the Map,
page 4).
Restore Defaults: Restores the map to factory default settings.
Map Settings
From the map, select MENU, and select Map Setup.
Configure Maps: Enables or disables the maps currently
loaded on the device.
Orientation: Adjusts how the map is shown on the page
(Changing the Map Orientation, page 4).
Dashboard: Sets a dashboard to display on the map. Each
dashboard shows different information about your route or
your location.
Guidance Text: Sets when the guidance text is shown on the
map.
Advanced Setup: Enables you to open advanced map settings
(Advanced Map Settings, page 4).
Advanced Map Settings
From the map, select MENU, and select Map Setup >
Advanced Setup.
Auto Zoom: Automatically selects the appropriate zoom level
for optimal use on your map. When Off is selected, you must
zoom in or out manually.
Detail: Selects the amount of detail shown on the map. Showing
more detail may cause the map to redraw more slowly.
Shaded Relief: Shows detail relief on the map (if available) or
turns off shading.
Vehicle: Sets the position icon, which represents your position
on the map. The default icon is a small blue triangle.
Zoom Levels: Adjusts the zoom level at which map items
appear. The map items do not appear when the map zoom
level is higher than the selected level.
Text Size: Selects the text size for map items.
Compass
When navigating, points to your destination, regardless of the
direction you are moving. When points toward the top of the
electronic compass, you are traveling directly toward your
destination. If points any other direction, turn until it points
toward the top of the compass.
Using the Compass
You can use the compass to navigate an active route.
Hold the device level.
1
Follow to your destination.
2
Course Pointer
The course pointer is most useful when you are navigating on
water or where there are no major obstacles in your path. It can
also help you avoid hazards near the course, such as shoals or
submerged rocks.
To enable the course pointer, from the compass, select MENU >
Heading Setup > Go To Line (Pointer) > Course (CDI).
4Contacts
The course pointer indicates your relationship to the course
line leading to the destination. The course deviation indicator
(CDI) provides the indication of drift (right or left) from the
course. The scale refers to the distance between dots on
the course deviation indicator, which tell you how far off course
you are.
Navigating with Sight 'N Go
You can point the device at an object in the distance, lock in the
direction, and navigate to the object.
Select Sight 'N Go.
1
Point the device at an object.
2
Select Lock Direction > Set Course.
3
Navigate using the compass.
4
Compass Settings
From the compass, select MENU.
Sight 'N Go: Allows you to point the device at an object in the
distance, and navigate using the object as a reference point
(Navigating with Sight 'N Go, page 5).
Stop Navigation: Stops navigating the current route.
Change Dashboard: Changes the theme and information
displayed on the dashboard.
Set Scale: Sets the scale for the distance between the dots on
the course deviation indicator.
Calibrate Compass: Allows you to calibrate the compass if you
experience irregular compass behavior, for example, after
moving long distances or after extreme temperature changes
(Calibrating the Compass, page 5).
Heading Setup: Allows you to customize the compass heading
settings (Heading Settings, page 5).
Change Data Fields: Customizes the compass data fields.
Restore Defaults: Restores the compass to factory default
settings.
Calibrating the Compass
Before you can calibrate the electronic compass, you must be
outdoors, away from objects that influence magnetic fields, such
as cars, buildings, or overhead power lines.
The device has a 3-axis electronic compass. You should
calibrate the compass after moving long distances or
experiencing temperature changes.
From the compass, select MENU.
1
Select Calibrate Compass > Start.
2
Follow the on-screen instructions.
3
Heading Settings
From the compass, select MENU, and select Heading Setup.
Display: Sets the type of directional heading shown on the
compass.
North Reference: Sets the north reference used on the
compass.
Go To Line (Pointer): Sets the behavior of the pointer that
appears on the map. Bearing points in the direction of your
destination. Course shows your relationship to the course line
leading to the destination.
Compass: Automatically switches from an electronic compass
to a GPS compass when you are traveling at a higher rate of
speed for a period of time.
Calibrate Compass: Allows you to calibrate the compass if you
experience irregular compass behavior, for example, after
moving long distances or after extreme temperature changes
(Calibrating the Compass, page 5).
Trip Computer
The trip computer displays your current speed, average speed,
trip odometer, and other helpful statistics. You can customize
the trip computer layout, dashboard, and data fields.
Trip Computer Settings
From the trip computer, select MENU.
Reset: Resets all the trip computer values to zero. For accurate
information, reset the trip information before beginning a trip.
Change Data Fields: Customizes the trip computer data fields.
Change Dashboard: Changes the theme and information
displayed on the dashboard.
NOTE: Your customized settings are remembered by the
dashboard. Your settings are not lost when you change
profiles (Profiles, page 16).
Insert Page: Inserts an additional page of customizable data
fields.
TIP: You can use the arrow keys to scroll through the pages.
Remove Page: Removes an additional page of customizable
data fields.
More Data: Adds additional data fields to the trip computer.
Less Data: Removes data fields from the trip computer.
Restore Defaults: Restores the trip computer to factory default
settings.
Altimeter
By default, the altimeter displays the elevation over the distance
traveled. You can customize altimeter settings (Altimeter
Settings, page 5). You can select any point on the plot to view
details about that point.
Altimeter Plot Settings
From the altimeter, select MENU.
Reset: Resets the altimeter data, including waypoint, track, and
Adjust Zoom Ranges: Adjusts the zoom ranges shown on the
altimeter page.
Change Data Fields: Allows you to customize the altimeter data
fields.
Restore Defaults: Restores the altimeter to factory default
settings.
Altimeter Settings
From the altimeter, select MENU > Altimeter Setup.
Auto Calibration: Once allows the altimeter to automatically
calibrate one time when you start an activity. Continuous
allows the altimeter to calibrate throughout the duration of
your activity.
Barometer Mode: Variable Elevation allows the barometer to
measure changes in elevation while you are moving. Fixed
Elevation assumes the device is stationary at a fixed
elevation, so the barometric pressure should only change
due to weather.
Pressure Trending: Sets how the device records pressure
data. Save Always records all pressure data, which can be
helpful when you are watching for pressure fronts.
Using the Main Pages5
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