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Finding the Unit ID or System ID on a Garmin Aviation Device

The serial number is printed or engraved on every unit and is necessary for registration and warranty purposes.

The Unit ID and System ID are internal numbers which are required for database updates and downloads. Each aviation database update is downloaded with the specific System ID or Unit ID for each GPS, therefore if the System ID or Unit ID is incorrect on fly.garmin.com, your aviation databases will not update correctly.

Use the steps below to determine the Unit ID or System ID of your device.

Portable Garmin Aviation Devices

Including the aera® series of aviation portables, GPSMAP® series of handheld navigators, and the D2™ aviator watches.


  • The aera 5xx series Unit ID will be found by following these instructions.
    1. Go to the MAIN MENU.
    2. Tap on TOOLS.
    3. Tap on DATABASE INFORMATION.
    4. The UNIT ID will be found near the bottom of the list.

  • The aera 660 Unit ID will be found by following these Instructions.
    1. Go to the MAIN MENU.
    2. Tap on TOOLS.
    3. Tap on DATABASE INFORMATION.
    4. The UNIT ID will be found near the bottom of the list.
  • The aera 760 Unit ID will be found by following these Instructions. 
    1. Go to the MAIN MENU.
    2. Tap on TOOLS.
    3. Tap on SYSTEM INFO
    4. The UNIT ID will be found near the top of the list. 
  • The aera 795/796 Unit ID will be found by following these Instructions.
    1.  Go to the MAIN MENU.
    2. Tap on TOOLS.
    3. Tap on DATABASE.
    4. The UNIT ID will be found near the top of the list.
  • The D2 Air/D2 Air X10 Unit ID will be found by following these instructions.
    1. Hold the MENU button.
    2. Select SETTINGS.
    3. Select SYSTEM.
    4. Select ABOUT.
  • The D2 Bravo/D2 Bravo Titanium Unit ID will be found following these instructions.
    1. Hold the MENU button.
    2. Select SETTINGS.
    3. Select SYSTEM.
    4. Select ABOUT.
  • The D2 Delta/D2 Delta S/ D2 Delta PX Unit ID will be found following these instructions.
    1. Hold the MENU Button.
    2. Select SETTINGS.
    3. Select SYSTEM.
    4. Select ABOUT.
  • The D2 Mach 1/D2 Mach 1 Pro Unit ID will be found following these instructions.
    1. Hold the MENU button.
    2. Select SETTINGS.
    3. Select SYSTEM.
    4. Select ABOUT.
  • The D2 Pilot Watch Unit ID will be found following these instruction.
    1. Select the ACTION KEY.
    2. Select SETUP.
    3. Select ABOUT.
  • The GPSMAP 96/96C Unit ID will be found following these instruction.
    1. Press the PAGE button.
    2. Press the MENU button twice.
    3. Scroll down to the SETUP tab.
    4. Scroll over to SYSTEM tab.
    5. Press the MENU button.
    6. Select SOFTWARE VERSION.
    7. Press ENTER.
  • The GPSMAP 195/196/295/296/396/495/496 Unit ID will be found following these instructions.
    1. Press the PAGE button.
    2. Press the MENU button twice.
    3. Scroll down to the SETUP tab.
    4. Scroll over to the SYSTEM tab.
    5. Press the MENU button.
    6. Select SYSTEM INFORMATION.
    7. Press ENTER.
  • The GPSMAP 696 Unit ID will be found following these instructions.
    1. Press the MENU button twice.
    2. Select DATABASE INFORMATION.
    3. Press ENTER.
    4. The UNIT ID will be found near the bottom of the list.

Panel Mount Garmin Aviation Devices

Including Garmin Integrated Flight Decks, the G3X Touch™  glass cockpit suite, G500/G600, G500/G600 TXI, GI 275, GNC® radios, GTR™ COM transceivers, GPS 175, GNX™ 375 IFR navigator, and GTN™ touchscreen avionics. 


  • The G1000®/G1000® NXI flight deck SYSTEM ID will be found following these steps.
    1. Go to the AUX page group on the MFD.
    2. Go to the SYSTEM STATUS page.
    3. The SYSTEM ID will be located at the top of this page.
  • The G2000®/G3000®/G5000® flight deck SYSTEM ID will be found following these steps.
    1. Tap on UTILITIES on a MFD GTC.
    2. Tap on SETUP.
    3. Tap on AVIONICS STATUS.
    4. Tap on AIRFRAME STATUS.
    5. The SYSTEM ID will be located on this page.
  • The G3X Touch SYSTEM ID will be found following these steps.
    1. Press the MENU button twice.
    2. Tap on TOOLS.
    3. Tap on DATABASE INFORMATION.
    4. The SYSTEM ID will be located on this page.
  • The G500/G600 SYSTEM ID will be found following these steps.
    1. Go to the AUX page group on the MFD.
    2. Go to the SYSTEM STATUS page.
    3. The SYSTEM ID will be located at the very bottom of this page.
  • The G500/G600 TXI SYSTEM ID will be found following these steps.
    1. Go to HOME.
    2. Tap on SYSTEM.
    3. Tap on SYSTEM STATUS.
    4. The SYSTEM ID will be located on this page.
  • The GI 275 SYSTEM ID will be found following these steps.
    1. Go to MENU.
    2. Tap on SYSTEM.
    3. Tap on INFO.
    4. The SYSTEM ID will be located on this page.
  • The GNC 215/GTR 205 SYSTEM ID will be found following these steps.
    1. Go to MENU.
    2. Tap on SYSTEM.
    3. Tap on SYSTEM INFO.
    4. The SYSTEM ID will be found on this page.
  • The GNC 255/GTR 225 SYSTEM ID will be found following these steps.
    1. Press the FUNC key.
    2. Go to SYS CONFIGURATION.
    3. Go to SERIAL NUMBER.
    4. Press the ENT key.
    5. The SYSTEM ID will be found on this page.
  • The GPS 175/GNX 375/GNC 355/ GTN/ GTN XI System ID will be found following these steps.
    1. Go to HOME.
    2. Press on SYSTEM.
    3. Press on SYSTEM STATUS.
    4. The SYSTEM ID will be found on this page. The GTN 650/650 XI will require you to to go to SYSTEM INFO for the SYSTEM ID.

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