What should I do if I get an LST_ERR05 error when updating my SYNC 3 Navigation map?

An LST_ERR05 error occurs when the navigation map update license file is not detected within the SyncMyRide folder. If you receive an LST_ERR05 error message while attempting to install your SYNC^®* 3 Navigation map update, you may need to add a missing license file or rename the file.

Before you start, find your SYNC 3 software version.

1. Tap Settings on your vehicle's SYNC screen.
2. Select General.
3. Tap About or About SYNC.
   • If your vehicle has SYNC 3 v3.0, there should be 8 files in the SyncMyRide folder. If the license file (JR3T-14G424-CL.TAR.GZ) is missing or has been renamed, you will see the LST_ERR05 error when attempting to install the map update.
   • If your vehicle has SYNC 3 v3.4, there should be 15 files in the SyncMyRide folder. If the license file (4U5T-14G424-CJ.TAR.GZ) is missing or has been renamed, you will see an LST_ERR05 error when attempting to install the map update.

Adding the Missing License File

If you find your SyncMyRide folder is missing the license file:

1. Find the map license key ZIP file, which is Download #3 in the download instructions you received after purchasing the SYNC map update.
2. Drag and drop the ZIP file into the SyncMyRide folder. The file must remain zipped.
3. Try to install the update again.

If the above steps do not resolve the issue, contact the Ford Customer Relationship Center using our Live Chat option or by calling 1-800-392-3673.

Renaming the License File

If the file is not missing but appears with a number in parentheses, such as JR3T-14G424-CL.TAR.GZ or 4U5T-14G424-CJ.TAR.GZ, rename the file by removing the space, parentheses, and number.

The file name should now be:

• SYNC 3 v3.0: JR3T-14G424-CL.TAR.GZ
• SYNC 3 v3.4: 4U5T-14G424-CJ.TAR.GZ

Additional Information

How do I install SYNC map updates?How do I identify my SYNC version?

^*Don’t drive while distracted or while using handheld devices. Use voice-operated systems when possible. Some features may be locked out while the vehicle is in gear. Not all features are compatible with all phones.