2022 X3 M40i

29inchrims · 04-17-2023, 11:27 AM

Hello all,

New to the form… 3rd BMW but it has been a long time.

I am installing a Stealth Hitch and before splicing into the wiring, wanted to see if there is a more elegant solution. I’m finding mixed information online about the 2022 X3 M40i having “tow ready” wiring harness. I’m hoping this community may have some insight…

While running wires I noticed this 8pin plug in the rear passenger side access panel (along with tons of other electronics). What is this? (Pic attached).

Thank you!

R BMW · 04-17-2023, 01:14 PM

That's the BMW harness connection for trailer wiring.
You need the OEM harness and control module along with programing to use it.

element56 · 04-18-2023, 08:39 AM

agree on buying the oem harness. I did the hidden hitch on my f25 x3 and the factory harness was the best decision. splicing into wires would have been a lot more work and not worth the effort for lesser capabilities.

29inchrims · 04-18-2023, 12:25 PM

Found this:

https://www.ecstuning.com/b-genuine-...c/61126992412/

But no information on a control module. Local service center doesn't seem that helpful yet... waiting on a call back.

29inchrims · 04-18-2023, 12:32 PM

I think I found the control module:

https://www.ecstuning.com/b-genuine-...t/63116894066/

R BMW · 04-18-2023, 01:15 PM

You got them. Then it needs to be programed either by dealer or someone with Esys (Programing software)

04-17-2023, 11:27 AM	#1
29inchrims Registered 0 Rep 3 Posts Drives: BMW X3M40i Join Date: Apr 2023 Location: California iTrader: (0)	2022 X3 M40i - tow wiring/electrical? Hello all, New to the form… 3rd BMW but it has been a long time. I am installing a Stealth Hitch and before splicing into the wiring, wanted to see if there is a more elegant solution. I’m finding mixed information online about the 2022 X3 M40i having “tow ready” wiring harness. I’m hoping this community may have some insight… While running wires I noticed this 8pin plug in the rear passenger side access panel (along with tons of other electronics). What is this? (Pic attached). Thank you! Attached Images
	Appreciate 0 Tweet Quote

04-17-2023, 01:14 PM	#2
R BMW Second Lieutenant 949 Rep 279 Posts Drives: 2014 328Xi GT, 2020 X3 MC Join Date: Apr 2019 Location: Minnesota iTrader: (1) Garage List 2020 BMW X3 M Comp [0.00] 2014 328Xi GT [10.00]	That's the BMW harness connection for trailer wiring. You need the OEM harness and control module along with programing to use it.
	Appreciate 1 29inchrims0.00 Quote

04-18-2023, 08:39 AM	#3
element56 Lieutenant 1092 Rep 401 Posts Drives: 16 X3 '22 M4XC '23 X3M40i Join Date: Aug 2021 Location: Vancouver, WA iTrader: (0)	agree on buying the oem harness. I did the hidden hitch on my f25 x3 and the factory harness was the best decision. splicing into wires would have been a lot more work and not worth the effort for lesser capabilities.
	Appreciate 1 29inchrims0.00 Quote

04-18-2023, 12:25 PM	#4
29inchrims Registered 0 Rep 3 Posts Drives: BMW X3M40i Join Date: Apr 2023 Location: California iTrader: (0)	Found this: https://www.ecstuning.com/b-genuine-...c/61126992412/ But no information on a control module. Local service center doesn't seem that helpful yet... waiting on a call back.
	Appreciate 0 Quote

04-18-2023, 12:32 PM	#5
29inchrims Registered 0 Rep 3 Posts Drives: BMW X3M40i Join Date: Apr 2023 Location: California iTrader: (0)	I think I found the control module: https://www.ecstuning.com/b-genuine-...t/63116894066/
	Appreciate 0 Quote

04-18-2023, 01:15 PM	#6
R BMW Second Lieutenant 949 Rep 279 Posts Drives: 2014 328Xi GT, 2020 X3 MC Join Date: Apr 2019 Location: Minnesota iTrader: (1) Garage List 2020 BMW X3 M Comp [0.00] 2014 328Xi GT [10.00]	You got them. Then it needs to be programed either by dealer or someone with Esys (Programing software)
	Appreciate 1 29inchrims0.00 Quote