Just got a notice from Ford about a recall regarding the reductant heater and sensor assembly (Recall notice 21M01). It basically states that "although the Diesel exhaust fluid system is likely functioning fine" the check engine light may come on indicating a problem with the reductant tank heating system and extended the warranty to 11 years or 120,000 miles. Well, about two months ago the check engine light came on on my 2015 F350 with 15,000 miles. The code indicated a problem with the reductant tank heater. Brought it to the dealer and they told me that the heater was part of the tank assembly and the whole assembly needed to be replaced to the tune of $1,019.00. I thought it really sucked that I would have to replace a major component on a truck with only 15,000 miles on it, but agreed to the repair. Now, after receiving this recall notice, I feel like I got screwed and paid for an unnecessary repair. Anybody else encountered this? I plan on visiting the dealer tomorrow with the recall notice and my repair invoice to see if I can get a refund. I am guessing that they will tell me to contact Ford Customer Service which will be an endless exercise in frustration.