UPDATE: Since I found that the wiring harness to my power/heated (only) outer mirrors actually had lots of extra wires going into the mirror connector, I took a chance on buying an aftermarket set of Power/Heated/TURN SIGNALS/PUDDLE LAMP mirrors from Car Parts Wholesale, fully thinking that I would also have to get into FORScan and do some programming changes to enable these extra features.
I was pleasantly surprised to find that once I simply plugged them in, I now also suddenly had
working exterior-mirror Turn Signals, and also
working Puddle Lamps!... No additional programming was needed! So, it seems like it IS possible to add these upgraded mirror features to your more basic XLT side view mirrors, in a simple plug-and-play manner.
For those of you who may also be interested in trying these mirrors on your own XLT, here is the ordering information:
Car Parts Wholesale (online/eBay)
LH Mirror (Power/Heated/Turn Signals/Puddle Lamps/Manual Fold) - Their P/N GB5Z-17683BDPTM ($125.45 with Free Shipping)
RH Mirror (Power/Heated/Turn Signals/Puddle Lamps/Manual Fold) - Their P/N GB5Z-17682BCPTM ($125.45 with Free Shipping)
According to their fitment chart, these mirrors will supposedly work on 2016-2019 Ford Explorer models.
The 1st photo shows the mirror as it came out of the box, with the gloss-black cap on it. Because I prefer the matte-black look of the caps that came on my original OEM mirrors, and because these caps were identical in their mountings and easily replaceable, I simply transferred those caps onto the new aftermarket mirrors, to get the look that I preferred.
Check out the photos...