The navigation systems in my 2011 SL and 2015 SL were trouble-free for the entire time I owned each car. The system in my 2019 SL Plus has been replaced once and is failing again so I recommend against purchasing one to try in an S model. Also, I doubt that it would work correctly without some upgrades to other modules. The dash clearly communicates with the navigation system for charge and climate timers as well as the clock. As someone already mentioned, you would need a GPS antenna.
Silver LEAF 2011 SL rear ended (totaled) by in-attentive driver 1/4/2015 at 50,422 miles
Silver LEAF 2015 SL purchased 2/7/2015; traded 8/10/2019 at 82,436 miles
White LEAF 2019 SL Plus purchased 8/10/2019