BMW X3 Forum
BMW X3 Forum
Welcome to the ultimate BMW X3 community.
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
Post Reply
 
Thread Tools Search this Thread
      02-02-2015, 01:46 PM   #1
scotta2
Private First Class
United Kingdom
5
Rep
110
Posts

Drives: MY2013 F25 X3 M Sport
Join Date: Nov 2012
Location: Falkirk UK

iTrader: (0)

Towing electrics

I'm looking for the part number of the wiring loom which will supply power to auxiliary power circuits on euro 13 pin towing systems. My MY2012 F25 came with a useless trailer pack that just powers lights, I need auxiliary power for my trailer control system connected to my caravan.

Hoping someone can offer some help.
__________________
MY 2013 X3 M Sport 2.0D Auto, Media Package, Xenons Deep Sea Blue with 19" Alloys.
Appreciate 0
      02-03-2015, 03:41 PM   #2
scotta2
Private First Class
United Kingdom
5
Rep
110
Posts

Drives: MY2013 F25 X3 M Sport
Join Date: Nov 2012
Location: Falkirk UK

iTrader: (0)

Ok, it's looking like none of you have experienced this problem! I think that the issue could be resolved by connecting a 20A fused supply cable directly from the battery to pin 9 (permanent supply) and an earth to pin 11 on a new 13 pin trailer socket. The only problem is this would require battery disconnection and I'm unsure if connecting a cable from the battery would be recognised as a fault error on the computer diagnostic system.
__________________
MY 2013 X3 M Sport 2.0D Auto, Media Package, Xenons Deep Sea Blue with 19" Alloys.
Appreciate 0
      02-04-2015, 02:40 AM   #3
SEPS
New Member
1
Rep
7
Posts

Drives: X3
Join Date: Jun 2014
Location: UK

iTrader: (0)

Had the same problem with my new BMW X3. It has integrated tow bar but with only a subset of pins connected on the 13 pin connector.
Complained and the dealer rectified at no additional charge. Apologies not sure what was added but importantly it does not mess with the on board computer or Canbus system. I have had this problem with self fitted tow bar electrics on previous cars.

The X3 integrated tow bar works very well as does the electrics.
Appreciate 0
      02-04-2015, 05:03 AM   #4
wingless
Private
11
Rep
67
Posts

Drives: 2015 BMW X3 xDrive28i
Join Date: Apr 2008
Location: FL

iTrader: (0)

The main power distribution is adjacent to the trailer hitch and trailer wiring.

On my 2015 there are unused power taps that could be populated and utilized for this power feed.

The access to this area is very easy on my vehicle, by removing two screws and four quick ¼ turn fasteners.
Appreciate 0
      02-05-2015, 04:13 AM   #5
scotta2
Private First Class
United Kingdom
5
Rep
110
Posts

Drives: MY2013 F25 X3 M Sport
Join Date: Nov 2012
Location: Falkirk UK

iTrader: (0)

Thanks for the replies folks, all I can say is if any of you intend towing a modern Caravan and order the factory fit electric towbar using a 13 pin euro socket you better make it absolutely clear that you need power to pins 9 and 10 as well as earths on pins 11 and 13. Dealerships here in Scotland have no idea of what is required and essentially my X3 is not fit for purpose when connected to my caravan. I'm now contacting independant towbar installation specialists to see if they can provide power, I am concerned that this could invalidate the warranty though. The system should conform to ISO 11446, clearly the factory fit option does not.
__________________
MY 2013 X3 M Sport 2.0D Auto, Media Package, Xenons Deep Sea Blue with 19" Alloys.
Appreciate 0
      02-05-2015, 07:19 AM   #6
wingless
Private
11
Rep
67
Posts

Drives: 2015 BMW X3 xDrive28i
Join Date: Apr 2008
Location: FL

iTrader: (0)

Quote:
Originally Posted by scotta2 View Post
The system should conform to ISO 11446, clearly the factory fit option does not.
There are not any ISO 11446 13-pin connectors in the US.

The typical US vehicle connector is the ISO 1724 7-pin connector, as shown here.



Get a wiring diagram for your vehicle and implement proper electrical connections, to not affect existing wiring and to not cause problems from the new wiring.
Appreciate 0
      02-05-2015, 09:08 AM   #7
wingless
Private
11
Rep
67
Posts

Drives: 2015 BMW X3 xDrive28i
Join Date: Apr 2008
Location: FL

iTrader: (0)

Quote:
Originally Posted by scotta2 View Post
... you need power to pins 9 and 10 as well as earths on pins 11 and 13.
On my vehicle the +12V permanent voltage for pin 9 and the +12V switched via ignition for pin 10 are both available from the main power distribution at the battery under the cargo floor covering.

There is also a screw for ground nearby that could be used for pins 11 and 13.
Appreciate 0
      02-06-2015, 10:45 AM   #8
scotta2
Private First Class
United Kingdom
5
Rep
110
Posts

Drives: MY2013 F25 X3 M Sport
Join Date: Nov 2012
Location: Falkirk UK

iTrader: (0)

The US pin looks entirely different from the Euro socket which has round pins, the towing assembly is supplied from Wesfalia.

The dealership have just informed me that they have located the necessary parts and that they can fit them at the discounted price of £375. Letter written to BMW UK highlighting my dissatisfaction, why supply towing equipment which is essentially not fit for purpose? More importantly why are the omitted pins not clearly stated at the point of sale?
__________________
MY 2013 X3 M Sport 2.0D Auto, Media Package, Xenons Deep Sea Blue with 19" Alloys.
Appreciate 0
      02-06-2015, 11:44 AM   #9
wingless
Private
11
Rep
67
Posts

Drives: 2015 BMW X3 xDrive28i
Join Date: Apr 2008
Location: FL

iTrader: (0)

It looks like the required part is the Westfalia 300 025 300 113, as-shown in page 387 of 422 of this Westfalia Towing 2013 Catalogue.

The £375 discounted price seems high, but that includes labor. There are eBay auctions selling just the part for 25 EUR.
Appreciate 0
      02-10-2015, 02:39 AM   #10
SEPS
New Member
1
Rep
7
Posts

Drives: X3
Join Date: Jun 2014
Location: UK

iTrader: (0)

Push the dealer again. Mine was rectified FOC very swiftly. Dealer was Cooper BMW.
Appreciate 0
      02-10-2015, 07:59 AM   #11
wings516
Private
13
Rep
74
Posts

Drives: '11 X3 35ix & Turbo M3
Join Date: Dec 2014
Location: Ohio

iTrader: (0)

Scotta, are you using a brake controller? If so, which one?
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 09:36 AM.




xbimmers
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST