I ran an update on my 2018 Sync 3 over wifi. Do the Nav maps update when i do this?

 

No. Maps update separately, once a year.

 

How? During a general update?

 

Maps update separately. You can check and see if you are up to date here: https://www.ford.com/support/sync-maps-updates/

If you're registered with the Ford owner support site, they'll send you an email when there is a Sync or map update that applies to your truck. When the truck was sold new it came with 2 free map updates, after that you have get a subscription.