Check your owners manual, that Chinese fire drill method to reset the toms is in there. I know, crazy that its in the manual, but.. They had to, since dealers do service work.
I have a 2014 e350 as well. About half the times it went I for service and they touched the tires, they managed to forget to reset that system, meaning I either had to do it or east time taking it back.
Both my dealer and myself are glad my warranty just ran out. I've complained to the owner and ford corporate sooo many times due to that worthless dealer and their non-mechanics.