OK guys/girls, I picked up a 2015 MKC a few months ago for my wife, replacing a 2002 Durango. I drive my cars until the wheels fall off, then put em back on and drive some more. Needless to say we both love the MKC but are starting to see some issues.
1. No crank, battery is good. Disconnected the battery for 20 seconds, reconnect, started right up. Has not happened again but now I carry a 10mm wrench with me.
2. Rear Lift Gate making the triple clicking noise.
3. Battery going dead in 24 hours.
Got the full PDF service manual online for around $25, 14,000 pages so be prepared to read, no I will not share/send it to you. I'll see if I can find the link if anyone is interested.
Using Forscan and the OBDLink EX adapter (amazon), first thing I noticed that in the BCM, the battery charge was set to 85%, maybe this is to increase the incredibly short MKC battery life, NOT WORKING FORD!. I set mine to 100%, did not solve the battery drain issue. More on this later under a different header.
Rear Lift Gate noise was driving me nuts, and I figured contributed to the dead battery. Using Forscan, ran the RGTM test did not find a problem. Took the rear latch out of vehicle, checked all 5 switches in the latch, they seemed to be working OK. Put latch back in vehicle. The clicking, or dun-dun-dun noise is the latch going through its motions, when you close the lift gate, the latch senses the first latch position, then the cinch motor will pull the gate closed all the way, then the motor will reverse back to a neutral position. In a working vehicle, when you initiate a gate open, the cinch motor moves the other direction and released the latch, then the lift arm motor turns on and opens the gate. Checked the power/ground going to the RGTM, all ok.
I am an electronics guy so I had to tear into the RGTM itself looking for open solder joints or other problems. Did not find any apparent issues, but I did notice the rear lights do not work without the module installed. This is because when the gate is opened, Ford disables the rear lights, not sure why, maybe the engineers at Ford did not want to blind birds or something. Nice Design Guys, really stupid way to do this. Anyways, in the process of poking around in the RGTM, I must have pushed it over the edge. When I reinstalled it, it would not talk to Forscan anymore, but hay, by tail lights were working again. By the way, I left the interior panels off the vehicle to have access to the RGTM and latch, after I completely killed the module, the rear release button did not work anymore. I ordered a new module and installed it.
The latch cinch-neutral noise is now gone, I can open the lift gate using the rear button and Forscan can find the module. I am getting a RGTM Error of U201A:55-8A, RGTM not configured. I do not see any options in Forscan to do the initial PMI (Programmable Module Insertion) or reprogramming. For me, replacing the RGTM module solved part of my issue, I am sure if I can reprogram the RGTM the rest of the lift gate system would work. Sorry for writing a book, lets get this RGTM issue figured out!