A Lowrance GPS not working issue can affect navigation, chart display, location tracking, waypoint accuracy, and route planning. Lowrance GPS devices are widely used for marine navigation, fish finders, and chartplotter systems, but problems such as weak GPS signals, incorrect location, frozen screens, software errors, or connection failures can occur.

If your Lowrance GPS is not working, the issue may be related to satellite reception, antenna connection, software updates, chart settings, power supply, or device configuration.

This guide explains the common causes of Lowrance GPS problems and provides step-by-step solutions to restore your navigation system.

Common Lowrance GPS Problems

Users may experience issues such as:

• Lowrance GPS not finding satellites
• GPS location not updating
• Incorrect boat position
• GPS signal lost
• GPS antenna not detected
• Navigation screen freezing
• Maps not loading
• Waypoints missing
• Device not turning on
• GPS accuracy problems

Why Is My Lowrance GPS Not Working?

Several reasons can cause Lowrance GPS problems:

• Weak satellite visibility
• Incorrect GPS settings
• Loose antenna connection
• Damaged GPS antenna
• Outdated software
• Corrupted chart data
• Power supply issues
• Faulty SD card
• Incorrect network settings
• Temporary device errors

Identifying the cause helps you apply the correct fix.

How to Fix Lowrance GPS Not Working

Follow these troubleshooting methods to restore GPS functionality.

1. Check Power Supply

A stable power connection is required for your Lowrance GPS to operate correctly.

Check:

• Battery voltage
• Power cable connection
• Fuse condition
• Wiring connections

Solution:

1. Turn off the Lowrance device.
2. Check all power connections.
3. Secure loose cables.
4. Restart the unit.

A weak power supply can cause GPS failures and unexpected shutdowns.

2. Check GPS Antenna Connection

If your Lowrance GPS cannot find your location, the antenna connection may be the cause.

Check:

• GPS antenna cable connection
• Antenna mounting position
• Cable damage

Solution:

1. Turn off the device.
2. Disconnect and reconnect the antenna cable.
3. Restart the GPS unit.
4. Check satellite status.

3. Move to an Open Area

GPS requires a clear view of the sky.

Signal problems may happen when the device is used:

• Under covered docks
• Near large structures
• Inside storage areas
• Near obstacles blocking satellite visibility

Solution:

Move your boat or vehicle to an open area and allow the GPS time to reconnect.

4. Check Satellite Signal Status

Lowrance devices provide satellite information through system settings.

Steps:

1. Open the GPS settings menu.
2. View satellite status.
3. Check signal strength.
4. Wait for satellite acquisition.

If no satellites appear, check antenna and installation.

5. Restart Your Lowrance GPS

A simple restart can fix temporary software problems.

Steps:

1. Turn off the Lowrance unit.
2. Disconnect power if needed.
3. Wait for a few minutes.
4. Turn the device back on.
5. Check GPS performance.

6. Update Lowrance Software

Outdated software can cause GPS performance problems.

Updating software may fix:

• GPS connection errors
• System bugs
• Compatibility problems
• Performance issues

Steps:

1. Check your Lowrance model.
2. Download the latest compatible software update.
3. Transfer the update to a microSD card.
4. Insert the card into your device.
5. Follow update instructions.

7. Check Chart and Map Settings

Sometimes GPS works correctly, but the chart display is incorrect.

Check:

• Correct chart source selected
• Map layer visibility
• Chart settings
• Position display options

Try switching chart views and refreshing the display.

8. Remove and Check the microSD Card

A damaged or corrupted SD card can affect device performance.

Steps:

1. Turn off your Lowrance GPS.
2. Remove the microSD card.
3. Restart the device.
4. Check GPS operation.

If the GPS works normally, the SD card may need replacement or reformatting.

9. Reset Lowrance GPS Settings

Incorrect settings may prevent proper GPS operation.

A reset can restore default configurations.

Before resetting:

• Backup waypoints
• Save routes
• Export important data

Then:

1. Open system settings.
2. Select reset options.
3. Restore default settings.
4. Restart the device.

10. Check GPS Source Settings

Some Lowrance systems support multiple GPS sources.

Verify:

• Correct GPS antenna selected
• Internal GPS enabled
• External antenna recognized

Incorrect source selection may prevent location updates.

11. Check Network Connections

For networked Lowrance systems, check connections between:

• GPS unit
• NMEA network
• External antennas
• Connected devices

Loose network connections can interrupt GPS communication.

Fix Lowrance GPS Not Finding Satellites

If your Lowrance GPS cannot find satellites:

Try:

• Moving outdoors.
• Checking antenna connection.
• Restarting the device.
• Updating software.
• Waiting several minutes for satellite acquisition.

A first satellite connection may take longer after a reset or long period without use.

Fix Lowrance GPS Signal Lost Error

If GPS signal keeps dropping:

Check:

• Antenna placement
• Cable condition
• Satellite visibility
• Power stability

Avoid mounting the antenna near sources of interference.

Fix Lowrance GPS Location Not Accurate

Incorrect location may be caused by:

• Poor satellite reception
• Incorrect GPS source
• Old software
• Antenna issues

Solutions:

• Update software.
• Check antenna installation.
• Allow time for satellite lock.
• Reset GPS settings if needed.

Fix Lowrance GPS Screen Freezing

If your device freezes:

Try:

1. Restart the GPS unit.
2. Remove unnecessary SD cards.
3. Update device software.
4. Reset settings if required.

Fix Lowrance GPS Not Working After Update

If problems started after an update:

Try:

• Restarting the device.
• Checking update compatibility.
• Removing and reinserting the SD card.
• Restoring previous settings.
• Reinstalling the update.

Prevent Lowrance GPS Problems

Follow these maintenance tips:

• Keep software updated.
• Protect cables and connectors.
• Check antenna installation regularly.
• Backup navigation data.
• Use reliable SD cards.
• Update charts before trips.
• Keep the device clean and dry.

Frequently Asked Questions

Why is my Lowrance GPS not showing my location?

This can happen because of weak satellite signals, antenna issues, incorrect settings, or software problems.

How long does Lowrance GPS take to find satellites?

The time depends on location, satellite visibility, antenna condition, and whether the device has recently been used.

Can a software update fix Lowrance GPS problems?

Yes. Software updates can resolve bugs and improve GPS performance.

Why does my Lowrance GPS keep losing signal?

Common causes include poor antenna placement, weak satellite visibility, damaged cables, or power problems.

Should I reset my Lowrance GPS?

A reset can help fix configuration problems, but always back up waypoints and routes first.

Conclusion

If your Lowrance GPS is not working, start by checking power connections, antenna installation, satellite visibility, software updates, and system settings. Most GPS issues can be resolved with simple troubleshooting steps such as restarting the device, reconnecting cables, updating software, or resetting settings.

Regular maintenance, updated charts, and proper antenna placement will help your Lowrance GPS provide accurate and dependable navigation performance.