[mrpingu]

Preparations
Tools needed

Drill
30mm Step Drill bit
16mm pipe socket
8mm pipe socket
10mm pipe socket

Check
Check if you have fuse holder Z7*7B see attached images
Check if your BDC has the right Hardware options:
00000F33 HW_Option_Body_LC_WBL_BLSH
00000F36 HW_Option_Body_TC_TERM30FREAR

This can be found out several ways
1. Check with bimmerutility the SVT
2. Check with e-sys if you have the right HWAP versions
3. Calculate a SVT_soll.xml with added S235A code (advanced)
and see if you get HW differences on the BDC or not.

Check which engine cooling fan you have
if your fan is not 600W, BMW says you need to upgrade your fan and therefore your B+ terminal to a 600W version. However as I only use the towing hitch sporadically and I live in country with a cool climate I skipped this part.

Parts needed

Towing Hitch bar & Towing hitch ball (51129464289)
Retrofit Wiring Kit (71602245623)
AAG ECU (71606889590, 71606884356, 71606879427)
Heat insulatio (5148729772)

Depending if already installed or not
Fuse holder Z7*7B (61149270357)

If you don’t have 600W Fan & B+ Terminal and are going to retrofit this aswell
B+ Terminal (61149321023, 61148782850, 61149321024)
Housing with Fan (17427617610, 17429468279 )
Fan Shroud (174276371899)


Instructions
- Remove wheel arch trim partially to reveal bolt of rear bumper panel
51 71 478 Removing and installing_replacing the rear left or right wheel arch trim.pdf
- Remove rear boot liner
51 46 050 Removing and installing_replacing top cover on tail panel.pdf
51 47 101 Removing and installing_replacing luggage compartment floor trim panel.pdf
- Remove rear bumper
51 12 156 Removing and installing rear bumper panel.pdf
- Remove rear wheel arch panel luggage compartment
51 47 161 Removing and installing_replacing right luggage compartment wheel arch panel.pdf
- Remove Glovebox compartment

- Then basically Follow the rest of official instructions
00 - BMW X1 Towing Hitch Retrofit instructions F48_EBA2245619_en.pdf


VO Code the car, the following modules need to be coded
- BDC
- DSC
- ICAM
- HU
- PMA2
- KOMBI
- SAS


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Original post

I could source a detachable towing head + bar from the junkyard for reasonable price.


The problem is I don't know which wiring is attached to it and what parts I do need to source after that.

Can someone provide the retrofit instructions from BMW for F48?

I found one on the the net by for F26 (X4)

[mrpingu]

Got the instructions and followed it. Attached

But have a problem that Terminal 30F will not switch on and thus not powering the trailer module. Anyone did a S235A retrofit before?

I double check all wiring and it is correct.


Only thing I am afraid of is that my BDC doesn't support this but I still don't know how to test this.


Edit: SOLVED, it was that VO coding of BDC was not correct. You have to code the BDC first, that will Switch on the 30F terminal. From there you can code the AAG module

[mrpingu]

Edited: first post and added instructions and pictures

[limsheng]

mrpingu great content as always. Sorry for the off topic : is the exhaust tip removable? Mine’s got the grimes and carbons I hope to remove and give it a good scrub
Also where do you find the manuals for the specific jobs?

[mrpingu]

Originally Posted by limsheng

mrpingu great content as always. Sorry for the off topic : is the exhaust tip removable? Mine’s got the grimes and carbons I hope to remove and give it a good scrub
Also where do you find the manuals for the specific jobs?

Yes it’s loose element:
https://www.realoem.com/bmw/enUS/showparts?id=HT91-EUR-09-2017-F48-BMW-X1_18dX&diagId=18_1184

There is this online independent BMW part shop that sends me the retrofitting instructions after I asked for it. This was my first retrofit but now I know these can also be found in ISTA.

[wcruzeiro]

Hello my friend mrpingu !
Do you have a short video showing how the trailer coupling works?
Is there an activation button?

Do you know if there are any limitations related to the msport bumper?

Thank you

[mrpingu]

Originally Posted by wcruzeiro

Hello my friend mrpingu !
Do you have a short video showing how the trailer coupling works?
Is there an activation button?

Do you know if there are any limitations related to the msport bumper?

Thank you

It’s manual on the X1, so no buttons but when trailer is electrically coupled then it automatically disables rear PDC because OEM

No limitatations with M-sport bumper.