Product Support - GPS Accuracy Troubleshooting

Here are some solutions that have helped many of our customers.

Mapping
Lowrance obtains its mapping data from government agencies. Mapping is not an exact science. A unit's GPS position (Latitude/Longitude) can be extremely accurate, but the location of a cartographic item, such as a street or store, may be slightly inaccurate. We encourage the reporting of inaccuracies or omissions so that we can consider them for future revisions.

Expectations
The GPS and WAAS technologies are aids to navigation.  Typically, GPS accuracy without WAAS will be around 10-20 meters (30-60ft) or less. With the addition of WAAS, accuracy can be as high as 5 meters (15ft) or less. There are still variables that will effect accuracy such as atmospheric interference.

Adjust the Zoom Range
The accuracy of your position could look different at various zoom ranges. Try different ranges until you find one that is comfortable for you.

Verify the GPS Accuracy
Have your unit lock onto GPS position in a known location; like your driveway. Save that location in the unit as a waypoint. Now travel away from the known location. Stop and recall the saved waypoint in the unit. Select GO TO to start the unit navigating back to that location. Observe the Distance To Go data as you travel back to that location. When you arrive at your waypoint, the Distance To Go should be close to 0.

Update the Software
Make sure your unit has the latest software version. Go to the Software Updates page to download the update for free.

Reset the Unit
Sometimes resetting your unit can solve unusual issues. Here s a list of Reset Procedures for Lowrance products. Locate the one that applies to the model you own. Try a Soft Reset first, this will return your settings to factory defaults.

If you decide to try a Hard Reset, save any important stored data to an MMC or SD card or write the information down. The data will be deleted during this process.

If you have reviewed the troubleshooting information above and still believe that you need additional assistance, please choose one of the following options:

If you need to speak with a Customer Service agent, please call our toll-free Customer Service line at 1-800-324-1356. Technicians and representatives are available to help you Monday through Friday from 8 a.m. to 5 p.m. CST, except holidays.