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  #1  
Old 04-24-2019, 11:42 AM
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What type of trailer hitch do I have?

Purchased a 2006 4.8is earlier this month and it has a hitch system in place. I didn't even realize there's an oem version and after market. I didn't get a receiver or ball or Pin for the receiver so on e I know what system I have I will look for a proper receiver.

Also this plug is round and doesn't look like the standard plug I'm used to seeing with normal trailers I use from place like uhaul that usually have a 4 pin connector?

Also where can I can I get that black middle cover/plate for the bumper/diffuser cover in case I want to remove the hitch.

Thanks everyone!







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  #2  
Old 04-24-2019, 12:08 PM
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While heavily corroded (is that rear reinforcement rusted through?), that appears factory. BMW has an adapter harness to go to 4 pin as well as different ball/receiver options I believe. I still have to order a set for mine.
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2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
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Old 04-24-2019, 12:17 PM
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Quote:
Originally Posted by crystalworks View Post
While heavily corroded (is that rear reinforcement rusted through?), that appears factory. BMW has an adapter harness to go to 4 pin as well as different ball/receiver options I believe. I still have to order a set for mine.
it could be. the vehicle spent most of its life in Texas I believe up until 2 years ago when the previous owner had it in Wisconsin for the last 2 years. everything else under the car looks pristine no rust or even surface rust so it is odd that the hitch itself has rust like that.

i will end up taking the rear bumper off and getting the hitch media blasted and repainted black for good measure. since it looks to be OEM then it seems the extra work to save it.

i dont believe anything is corroded through, could be the angle and shadow from what appears to be a bracing tab on the reinforcement bar itself.

will any receiver work with this hitch or is there a BMW specific receiver to get?

How would i know if I have the trailer module as well? I guess i could hook up PASoft and see if it shows on the KBUS as a module to vie and edit.

so i take it it will be pretty much required to get that 4 pin adapter harness since most trailers in the US appear to use the 4 pin connector and not that BMW round connector.


thank you for the info!
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Old 04-24-2019, 12:28 PM
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It's factory. Cleanup the surface rust using a bronze wire brush (harborfreight) on a drill and paint it black using brake caliper paint spray can. It'll look pristine.
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Old 04-24-2019, 12:32 PM
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Here is what the entire OE kit looks like:



You can see the 7 to 4 pin adapter plug thing right above the towing module. Looks like a big key thing. There appear to be plenty of aftermarket harnesses for land rovers, VW, that go from Euro to 4 pin so that's an option if the pinouts are standard on the Euro plugs across marques.

To visually check for the towing module you'd have to go under the spare tire/compressor to look in the electronics tray. I haven't used INPA or other software to query it. Wonder if the NT520 can do that?

As for the receiver/ball setups I don't have an answer. I haven't look into it yet as I have not needed to tow with the truck yet. I'm sure I will frantically search for these things when the need arises rather than being proactive and getting them ahead of time.
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2005 X5 4.4i Build 04/05 Maintenance/Build Log
Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles)


2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles)
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  #6  
Old 04-24-2019, 01:07 PM
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wonderful thank you guys very much appreciated!
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Old 04-24-2019, 03:49 PM
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It is a standard 2" receiver, so any 2" mount should work. Those 7-4 wire adapters are available everywhere - ebay, amazon, walmart, etc. They're universal.

AM.
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Old 04-24-2019, 03:52 PM
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Quote:
Originally Posted by Attacking Mid View Post
It is a standard 2" receiver, so any 2" mount should work. Those 7-4 wire adapters are available everywhere - ebay, amazon, walmart, etc. They're universal.

AM.
thanks a lot! ill look them up online and get them soon.
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  #9  
Old 04-27-2019, 08:14 AM
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The 7 pin is actually the standard that you see on trucks and RVs. It includes 12v power, backup lights and electric trailer brake wiring. The 4 pin is used on small trailers so only ground, turn/brakes and tail/running lights.
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