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

An "LST_ERR05" error occurs when the navigation maps update license file is not detected within the "SyncMyRide" folder on your USB. Use the following steps while attempting to install your SYNC^®* 3 Navigation map update.

Refer to the table below for the files' requirements on your USB when downloading the Navigation map update.

Notes: 

• If you need assistance finding your SYNC 3 software version, refer to the article What SYNC version do I have in my Lincoln vehicle?
• To verify your USB meets the requirements, refer to Installing SYNC Updates Over Wi-Fi or with a USB.

Adding a Missing Map License Key File

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

1. Drag and drop the map license key file #3 Download License File link into the "SyncMyRide" folder. The link will be available in the download instructions you received after purchasing the SYNC map update. 
   
   Note: The file must remain zipped.
    

   
2. Install the update again.

If the above steps do not resolve the issue, contact your Lincoln Retailer for assistance. If a retailer is not available in your area, contact your preferred Ford Dealer.

Additional Information

How do I get the latest Navigation map updates for my SYNC system?
How do I install SYNC updates over Wi-Fi or with a USB?
How do I check for SYNC updates?

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

Wi-Fi is a registered trademark of Wi-Fi Alliance^®.