A Simrad GPS not working problem can affect navigation accuracy, location tracking, route planning, and marine safety. When your Simrad GPS fails to show your position, loses satellite connection, freezes, or displays incorrect information, the issue may be caused by GPS signal problems, antenna faults, outdated software, incorrect settings, or power issues.

Simrad navigation systems rely on GPS satellites, antennas, software, charts, and stable power connections to provide accurate positioning. This guide explains the common reasons why your Simrad GPS is not working and provides step-by-step solutions to restore normal operation.

Common Simrad GPS Problems

You may experience issues such as:

• Simrad GPS not showing location
• GPS signal lost
• Unable to find satellites
• Incorrect position display
• GPS not updating location
• Navigation routes not working
• Maps not loading
• Device freezing
• Slow system response
• GPS antenna not detected

Why Is My Simrad GPS Not Working?

Several factors can cause Simrad GPS problems.

1. Weak GPS Signal

Your GPS may fail when:

• Antenna view is blocked
• Device is indoors
• Tall structures interfere with signals
• Satellite visibility is poor

2. GPS Antenna Problems

A damaged or loose antenna can cause:

• No location information
• Satellite connection failure
• Incorrect GPS readings

3. Outdated Software

Older software versions may cause:

• GPS errors
• System instability
• Navigation problems
• Compatibility issues

4. Power Supply Problems

Unstable power can result in:

• GPS shutdowns
• Signal loss
• Device restarting

5. Incorrect GPS Settings

Wrong configuration settings may prevent the system from receiving GPS data correctly.

How to Fix Simrad GPS Not Working

Follow these troubleshooting steps to restore your Simrad GPS.

1. Restart Your Simrad GPS

Restarting can fix temporary software errors.

Steps:

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

A restart refreshes system functions and reconnects GPS services.

2. Check GPS Satellite Signal

A clear satellite connection is required for accurate location tracking.

Steps:

1. Open the GPS settings menu.
2. Check satellite information.
3. Review signal strength.
4. Move to an open area.
5. Wait for satellite acquisition.

Avoid testing the device under covers or near large obstacles.

3. Inspect GPS Antenna Connection

Check the GPS antenna carefully.

Look for:

• Loose cable connections
• Damaged connectors
• Cable wear
• Incorrect antenna placement

Solution:

1. Turn off the Simrad device.
2. Disconnect the antenna cable.
3. Reconnect it firmly.
4. Restart the GPS.

4. Verify GPS Source Settings

Some Simrad systems can use different GPS sources.

Check:

• Internal GPS receiver
• External GPS antenna
• Network GPS source

Select the correct GPS source in settings and restart the device.

5. Check Power Connections

A stable power supply is necessary for GPS operation.

Inspect:

• Battery condition
• Power cables
• Fuse connections
• Wiring

Make sure all connections are secure.

6. Update Simrad Software

Outdated software can cause GPS performance problems.

Updating may improve:

• Satellite detection
• GPS communication
• System stability
• Navigation performance

Update steps:

1. Check your Simrad model.
2. Download the latest software update.
3. Install through Wi-Fi or microSD card.
4. Restart the device.

7. Check Simrad Maps and Charts

If navigation is not working but GPS position is available, the issue may be related to charts.

Check:

• Chart card installation
• Map source selection
• Chart compatibility
• Chart update status

8. Remove and Test microSD Card

A damaged memory card can sometimes affect system operation.

Try:

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

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

9. Reset Simrad GPS Settings

Incorrect settings can cause GPS problems.

Before resetting:

• Backup waypoints.
• Save routes.
• Export navigation data.

Then:

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

10. Allow Time for Satellite Lock

If your Simrad GPS has recently been:

• Updated
• Reset
• Unused for a long time

it may take additional time to reconnect with satellites.

Keep the device powered on in an open area until the signal returns.

Fix Simrad GPS Not Working After Update

If the GPS stopped working after an update:

Try:

• Restarting the device.
• Checking GPS settings.
• Reconnecting the antenna.
• Reinstalling the software update.
• Resetting navigation settings.

Fix Simrad GPS Not Showing Location

If your Simrad GPS does not display your position:

Check:

• Satellite signal strength
• GPS antenna connection
• GPS source selection
• Software version

Then restart the device and test again.

Fix Simrad GPS Signal Lost Problem

If your GPS keeps losing signal:

Try:

• Moving to an open area.
• Checking antenna placement.
• Inspecting cables.
• Updating software.
• Checking power stability.

Fix Simrad GPS Unable to Find Satellites

If satellites are not detected:

Follow these steps:

1. Move away from obstacles.
2. Check antenna connection.
3. Restart the device.
4. Verify GPS settings.
5. Update software.

Prevent Simrad GPS Problems

Follow these maintenance tips:

• Keep software updated.
• Update charts regularly.
• Protect antenna cables.
• Maintain stable power connections.
• Test GPS before trips.
• Keep memory cards in good condition.
• Backup navigation data regularly.

Frequently Asked Questions

Why is my Simrad GPS not working?

Common causes include weak satellite signals, antenna issues, outdated software, incorrect settings, and power problems.

How do I reset my Simrad GPS?

You can reset your Simrad GPS through system settings by selecting restore defaults or reset options. Backup important data first.

Why is my Simrad GPS not finding satellites?

Possible causes include blocked satellite visibility, antenna problems, software issues, or incorrect GPS settings.

Does updating Simrad software fix GPS problems?

Software updates can resolve bugs and improve GPS performance and system compatibility.

Why does my Simrad GPS keep losing location?

Frequent location loss may be caused by poor antenna placement, weak signals, unstable power, or outdated software.

Conclusion

If your Simrad GPS is not working, start by checking the GPS signal, antenna connection, power supply, and system settings. Restarting the device, updating software, checking charts, and resetting configurations can resolve many common problems.

Regular maintenance, updated software, and proper antenna installation will help keep your Simrad GPS accurate and reliable for marine navigation.