Me thinks it's for Parking Lamps = "ON".
https://www.fordservicecontent.com/Ford_Content/vdirsnet/OwnerManual/Home/Content?variantid=9218&languageCode=en&countryCode=USA&Uid=G2207712&ProcUid=G2160672&userMarket=USA&div=f&vFilteringEnabled=False&buildtype=web
I'm sure-I hope-Ford has Quality Assurance inspectors through the production process, or can you imagine how much worse their problems would be? However, Ford's 6 Sigma program isn't as good as Toyota's.
The hybrid would save you money on gas in town, but on the highway there's virtually no difference from the EB. Also, a downside might be the hybrid is "only" FWD whereas the EB is AWD. These are the reasons why I chose an EB over the hybrid.