Garmin GPSMAP 8500 Series - User Manual

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GPSMAP® 8000/8500 SERIES

Owner’s Manual

Table of Contents

Questions and Answers

J
Jessica MartinezAug 11, 2025
What to do if my Garmin GPSMAP 8500 won't turn on or keeps turning off?
- L
  Lisa RogersAug 11, 2025
  If your Garmin GPS device won't turn on or keeps turning off, first, ensure the power source is working by checking if other devices connected to it are functioning. Then, inspect the fuse in the power cable (within the red wire's holder) and test it with a multimeter; a working fuse reads 0 ohms. Also, measure the DC voltage between the female sockets 8 (power) and 2 (ground) of the power cable; it should be at least 10 volts for the device to power on.
K
Kelly PerezAug 22, 2025
How to fix Garmin GPSMAP 8500 not acquiring signals?
- A
  Ann HuntAug 22, 2025
  If your Garmin GPS device isn't acquiring GPS signals, and it has moved a significant distance since its last satellite acquisition or has been off for weeks or months, ensure that your device is running the latest software by updating it. If the device uses an internal GPS antenna, ensure it has a clear view of the sky, ideally near a window if inside a cabin. If a clear view is impossible, consider using an external GPS antenna. If using an external antenna, check its connection to the chartplotter or NMEA network. If your device has multiple GPS antenna sources, try selecting a different one.
B
brett13Aug 30, 2025
Why is my Garmin GPSMAP 8500 GPS creating waypoints in the wrong location?
- Z
  Zachary GilbertAug 30, 2025
  If your Garmin GPS device is creating waypoints in the wrong location, it might be because the map datum and position format on your device don't match those used when the waypoint was originally marked. To fix this, first, determine the original map datum and position format used. Then, on your chartplotter, go to Settings > Preferences > Units and adjust the settings to match the original waypoint's map datum and position format. Finally, recreate the waypoint.

Garmin GPSMAP 8500 Series Specifications

General

Water Rating	IPX7
Networking	NMEA 2000, Wi-Fi
Sonar Support	Yes
Radar Support	Yes
Video Input	Yes
Display Size	12 inches

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