Adding a Physical Interior Liftgate Power Switch

OP
OP
markboris

markboris

Well-Known Member
First Name
Mark
Joined
Nov 13, 2019
Threads
43
Messages
5,733
Reaction score
16,373
Location
Sonora, CA
Vehicles
Currently: '20 Shelby GT500 FPB '24 Mach-E GTP GGM
Occupation
Retired
Country flag
I think Mark "tapped" the BCM wire (brown) on one end of the customer supplied wire, and then on the other end of that same customer supplied wire, connected to the Park Assist Switch by cutting the Green/Brown wire and joining.
You are correct.
Sponsored

 

HuntingPudel

Well-Known Member
First Name
Steve
Joined
Mar 23, 2021
Threads
88
Messages
12,927
Reaction score
17,370
Location
Bay Area, CA
Vehicles
2024 MME GT with Performance Upgrade, 1979 Fire-Am, 1972 K/5 Blazer
Occupation
Engineering
Country flag
OP
OP
markboris

markboris

Well-Known Member
First Name
Mark
Joined
Nov 13, 2019
Threads
43
Messages
5,733
Reaction score
16,373
Location
Sonora, CA
Vehicles
Currently: '20 Shelby GT500 FPB '24 Mach-E GTP GGM
Occupation
Retired
Country flag

MyLittlePony2022

Well-Known Member
First Name
William
Joined
Jul 17, 2021
Threads
37
Messages
798
Reaction score
808
Location
SF Bay Area, California
Vehicles
2022 "Mach-E Auto" GTPE, Cyber Orange
Country flag
@markboris Did you do anything to change the logo on park assist button or did you just leave it as it was from FoMoCo.

Anyone else change the logo on the parking assist button when they converted it over to a hard button to open the lift gate?
 
OP
OP
markboris

markboris

Well-Known Member
First Name
Mark
Joined
Nov 13, 2019
Threads
43
Messages
5,733
Reaction score
16,373
Location
Sonora, CA
Vehicles
Currently: '20 Shelby GT500 FPB '24 Mach-E GTP GGM
Occupation
Retired
Country flag
@markboris Did you do anything to change the logo on park assist button or did you just leave it as it was from FoMoCo.

Anyone else change the logo on the parking assist button when they converted it over to a hard button to open the lift gate?
Hi William, I didn't change the logo on the button. I like the fact it's an illuminated button and if I were to put a sticker over the top, it wouldn't be lit anymore. While I would like to have something other than "P" I'm ok with it, at least for now. ?
 


mkhuffman

Well-Known Member
First Name
Mike
Joined
Nov 19, 2020
Threads
29
Messages
6,875
Reaction score
9,507
Location
Virginia
Vehicles
2025 Rivian R1T Tri-Max, Jeep GC-L, VW Jetta
Country flag
Hi William, I didn't change the logo on the button. I like the fact it's an illuminated button and if I were to put a sticker over the top, it wouldn't be lit anymore. While I would like to have something other than "P" I'm ok with it, at least for now. ?
Maybe you can somehow turn the "P" into an "H".
 
OP
OP
markboris

markboris

Well-Known Member
First Name
Mark
Joined
Nov 13, 2019
Threads
43
Messages
5,733
Reaction score
16,373
Location
Sonora, CA
Vehicles
Currently: '20 Shelby GT500 FPB '24 Mach-E GTP GGM
Occupation
Retired
Country flag
Maybe you can somehow turn the "P" into an "H".
Mike, I've thought about several ways to change the look of that button but none would look OEM. My favorite idea was to eliminate the "P" all together and just have the two lines on either side but I can't even figure out how to do that without it looking weird. The best thing would be to do what we have all done prior and replace the MAX defrost switch on the headlamp control with an actual Liftgate switch. I probably will do that at some point but running a wire from the BCM to the Parking assist switch was so fast and easy. I'm getting lazy in my old age. ?
 

mkhuffman

Well-Known Member
First Name
Mike
Joined
Nov 19, 2020
Threads
29
Messages
6,875
Reaction score
9,507
Location
Virginia
Vehicles
2025 Rivian R1T Tri-Max, Jeep GC-L, VW Jetta
Country flag
Mike, I've thought about several ways to change the look of that button but none would look OEM. My favorite idea was to eliminate the "P" all together and just have the two lines on either side but I can't even figure out how to do that without it looking weird. The best thing would be to do what we have all done prior and replace the MAX defrost switch on the headlamp control with an actual Liftgate switch. I probably will do that at some point but running a wire from the BCM to the Parking assist switch was so fast and easy. I'm getting lazy in my old age. ?
You seem like a young man to me!
 

DanoiZ

Well-Known Member
First Name
Dan
Joined
Jan 23, 2023
Threads
3
Messages
107
Reaction score
114
Location
SLC, UT
Vehicles
2022 Ford Mustang Mach-E GT
Occupation
IT
Country flag
The external momentary switch for the rear hatch I installed in my Premium worked great but for my GT I decided to go the route that Pat (i8iridium) went a few posts above. Beings the GT has a slightly different headlamp switch assembly (has a traction control switch), I had to make a slight modification.

I bought the Bronco headlamp switch assembly (M1PZ-11654-AA). I removed the headlamp switch assembly out of my car and took it and the Bronco switches both apart. I replaced the Max Defrost sub switch on mine with the Hatch opening/closing sub switch of the Bronco's. They just snap in and out of the main switch assembly. On the connector at the back of the switch assembly, I installed a wire into Pin 12 and ran that to the brown wire at the top connector of the BCM.

This switch will open and close the liftgate when the car is on or off as long as the doors are unlocked and it is in park.

IMG_6528.jpeg
Mark....will just the liftgate switch work? I found this.

Part #: AE9Z74432A38AA - liftgate latch release switch tailgate hatch

https://parts.ford.com/shop/en/us/l...-switch-tailgate-hatch-p-ae9z74432a38aa?gQT=2
 

yubbie2

Member
Joined
Feb 20, 2023
Threads
2
Messages
22
Reaction score
19
Location
Houston
Vehicles
2023 MME Premium RWD
Country flag
Hi William, I didn't change the logo on the button. I like the fact it's an illuminated button and if I were to put a sticker over the top, it wouldn't be lit anymore. While I would like to have something other than "P" I'm ok with it, at least for now. ?
It’s easy to remember once you realize that P is for pTrunk, like pterodactyl or pteropoda. Obviously.
 
OP
OP
markboris

markboris

Well-Known Member
First Name
Mark
Joined
Nov 13, 2019
Threads
43
Messages
5,733
Reaction score
16,373
Location
Sonora, CA
Vehicles
Currently: '20 Shelby GT500 FPB '24 Mach-E GTP GGM
Occupation
Retired
Country flag
Mark....will just the liftgate switch work? I found this.

Part #: AE9Z74432A38AA - liftgate latch release switch tailgate hatch

https://parts.ford.com/shop/en/us/l...-switch-tailgate-hatch-p-ae9z74432a38aa?gQT=2
No, as Wes said, that is for the liftgate itself. Either purchase any type of momentary button you like and mount it where you want OR buy a used headlamp switch assembly that has a liftgate switch Part numbers are in this thread) and pull it from that used assembly and replace your Max defrost switch in your headlamp switch assembly OR use the Park assist switch.
 

DanoiZ

Well-Known Member
First Name
Dan
Joined
Jan 23, 2023
Threads
3
Messages
107
Reaction score
114
Location
SLC, UT
Vehicles
2022 Ford Mustang Mach-E GT
Occupation
IT
Country flag
So I take it that GT owners never us the defrost button?
I'm in Northern Utah and I never use that button. If I want Max Defrost I'll do it from the screen.
 

steveg95

Well-Known Member
First Name
Stephen
Joined
Jul 18, 2023
Threads
11
Messages
188
Reaction score
112
Location
Marion, IA
Vehicles
Ford Mustang Mach e
Occupation
Retired
Country flag
I was at a friends this morning who also has a Mach-E and she said the one thing she misses is a simple power button to open and close the liftgate. She doesn't like having to turn the car to accessory and make three selections on the center screen. She just wants to push a button.

I thought it couldn't be that difficult to wire up a switch to do this and I was right. I took a look at the wiring diagram and found that both momentary switches in the liftgate do nothing more than short an incoming wire from the BCM to ground. The BCM is located at the front passenger footwell at the top. Extremely easy to access just remove the panel that hides it and you can get to the wiring. The wire that is needed to tap into is solid brown and located at the large top plug connection. I tapped into it and ran the wire to the center console where I installed a small momentary switch just below my subwoofer volume control. For the ground I used the black/blue wire going to the parking brake switch in the console. All the black/blue wires throughout the car are grounds. I had this momentary switch laying around but I am going to change it out with one that is much flatter.

I now have a working power button that will open and close the liftgate from inside the car without having your key fob, or phone. The car can be on or off but the doors have to be unlocked and in Park. It works just like the one in my 2014 Escape did. I could have mounted the switch is several easy to see locations but like to conceal my work (like I did the subwoofer volume control) so nothing looks "added on". Just drop your hand down in front of the console and they are both easy to use. Besides if I ever needed to remove it, all I'd have to do is put a little flat plug in the hole and no one would know any different.

It took me about an hour to do the entire thing but now that I did it, when I do hers, probably should only take 30 minutes. I took quick photos of where I tapped into the wiring and it was before I permanently attached and taped up the wires.

Edit: After getting my '21 GT when I did this mod, instead of adding a button on the console like I did on the Premium, I replaced the max defrost button on the headlamp switch with a liftgate button from a bronco found in this post #57

Edit again: After getting my '24 GT, I decided to use the useless Park Assit button to activate the liftgate in this post #276

IMG_48081900.jpg


IMG_48121900.jpg


IMG_48191900.jpg
Thanks for the excellent instructions. My buddy had an industrial grade micro switch that we used. Working great.
Ford Mustang Mach-E Adding a Physical Interior Liftgate Power Switch IMG_3994
 

AussieMME

Member
First Name
Alan
Joined
Nov 27, 2024
Threads
1
Messages
10
Reaction score
6
Location
Melbourne AUSTRALIA
Vehicles
MY23 Select MME
Really appreciate this hack Mark - gonna fit it to the Park switch in my MY23 this weekend. Just wanted to ask if you can provide a few tips on how to run the tap wire across from the BCM into the console....
Sponsored

 
 







Top