3
Wait 30 seconds.
4
Insert the new battery with the positive side facing up.
NOTE:
Do not damage or lose the O-ring gasket.
5
Replace the back cover and the four screws.
NOTE:
Do not overtighten.
After you replace the heart rate monitor battery, you may need
to pair it with the device again.
Replacing the Speed Sensor or Cadence Sensor
Battery
The LED flashes red to indicate a low battery level after two
revolutions.
1
Locate the circular battery cover
À
on the back of the sensor.
2
Twist the cover counter-clockwise until the marker points to
unlocked and the cover is loose enough to remove.
3
Remove the cover and the battery
Á
.
TIP:
You can use a piece of tape
Â
or a magnet to remove
the battery from the cover.
4
Wait 30 seconds.
5
Insert the new battery into the cover, observing polarity.
NOTE:
Do not damage or lose the O-ring gasket.
6
Twist the cover clockwise until the marker points to locked.
NOTE:
The LED flashes red and green for a few seconds
after battery replacement. When the LED flashes green and
then stops flashing, the device is active and ready to send
data.
Troubleshooting
Resetting the Device
If the device stops responding, you may need to reset it. This
does not erase any of your data or settings.
Hold for 10 seconds.
The device resets and turns on.
Clearing User Data
You can restore all of the device settings to the factory default
values.
NOTE:
This deletes all user-entered information, but it does not
delete your history.
Select
Menu
>
Settings
>
System
>
Device Reset
>
Factory Reset
>
OK
.
Maximizing Battery Life
• Decrease the backlight brightness or shorten the backlight
timeout (
).
• Select the
Smart
recording interval (
).
• Turn on the
Auto Sleep
feature (
).
• Turn off the
Bluetooth
wireless feature (
).
• Select the
GPS
setting (
Changing the Satellite Setting
).
Improving GPS Satellite Reception
• Pair your device with a Bluetooth enabled smartphone.
Satellite information is sent to your device, allowing it to
quickly locate satellite signals.
• Take your device outside to an open area away from tall
buildings and trees.
• Remain stationary for several minutes.
Temperature Readings
The device may display temperature readings that are higher
than the actual air temperature if the device is placed in direct
sunlight, held in your hand, or is charging with an external
battery pack. Also, the device will take some time to adjust to
significant changes in temperature.
Replacement O-rings
Replacement bands (O-rings) are available for the standard
mount in two sizes:
• 1.3 × 1.5 × 0.9 in. AS568-125
• 1.7 × 1.9 × 0.9 in. AS568-131
NOTE:
Use Ethylene Propylene Diene Monomer (EPDM)
your Garmin dealer.
Viewing Device Information
You can view the unit ID, software version, and license
agreement.
Select
Menu
>
Settings
>
System
>
About
.
Updating the Software
Before you can update your device software, you must have a
Garmin Connect account, and you must download the Garmin
Express
™
application.
1
Connect the device to your computer using the USB cable.
When new software is available, Garmin Express sends it to
your device.
2
Follow the on-screen instructions.
3
Do not disconnect your device from the computer during the
update process.
Support and Updates
Garmin Express provides easy access to these services for
Garmin devices.
• Product registration
• Product manuals
• Software updates
• Data uploads to Garmin Connect
16
Troubleshooting
