2020 Ford Explorer Mirror Turn Signals
I can confirm the DDM and PDM module codes to enable and disable the exterior mirror turn signals:
Driver Door Module (DDM):
740-02-09 --- 0001-0000-5AAD (disabled)
740-02-09 --- 0101-0000-5AAE (enabled)
Passenger Door Module (PDM):
741-02-09 --- 0001-0000-5AAE (disabled)
741-02-09 --- 0101-0000-5AAF (enabled)
I'll post a how-to when I get the chance, but quickly:
- I bought the 2020 factory gloss black caps and factory turn signal modules. The caps and turn signal modules snap together and replace the non-signal caps using the same snap-in attachment points, and they lock in place solidly when the four TX screws under the mirror carrier are re-tightened. Pretty clever design, actually.
- I bought two Molex 14-56-7032 3-pin connectors for the turn signal modules (
https://www.mouser.com/ProductDetail/538-14-56-7032). These are the same connectors Ford uses, they come with pins, and they lock solidly into the turn signal module. Only two of the three pins are used.
- I bought two male TE Connectivity pins for the mirror connectors (
https://www.digikey.com/en/products/detail/te-connectivity-amp-connectors/1438299-2/2301035). These are also the same pins Ford uses.
- Run one wire from the TE pin, plugged into Pin 3 on the mirror connector, to one of the turn signal module pins (I'll document which one later). Run the other wire from two-wire ground splice to the other turn signal module pin. I actually soldered the pins and splice and unwrapped and rewrapped the harness so it's just like a factory harness.
It's about $220 in parts, and it takes about two hours to remove the door panel and remove/modify/reminstall the mirror and door panel on each side. The DDM/PDM wiring for the signals is already on the door side of the mirror connector, so once the physical mods were done, I only needed to use FORSCAN to modify the DDM/PDM settings. There's nothing band-aid about this, it's all factory, and you don't even need to unsnap the mirror carrier from the mirror motor. Blind-spot monitor LED, puddle lamps, heat, and power mirror movements still work the same, as do all of the other DDM and PDM functions such as power windows. Nothing seems to be adversely affected, and now I have the signal/BLISS/heated/power mirrors Ford's order guide *said* I would have on an XLT, plus the factory gloss black caps look much better against the gloss-black A-pillars.