2003 X5 Tow Hitch Options

[AquilaBMW]

I think I kinda know the answer to this question, but I need to put it out there anyway.

Many moons ... okay, months ago when I acquired my X I started looking into adding a tow hitch to the car. I researched on here and discovered that it was an option and that BMW provides a kit.

I also learned that the car needs a certain Module to use it's tow hitch? Is this correct?

Here is my problem. Month ago when I checked for this kit, BMW had some available. Well, I am guessing some of you here or some other X owners conspired and bought them all up because BMW has zero inventory at the moment. Not a single one in NA.

I checked around and U-Haul claims to have a kit that works on the X5. Has anyone ever used the U-Haul one? Is if safe? Will it work with this car? Are there electrical issues to look out for?

I can DIY the car myself - which would be necessary since U-Haul wants to charge $520 for the installed kit. I don't mind forking out the money, but I need to know it's okay / safe for this car.

Cheers!

[TerminatorX5]

Check the ECS tuning, i thought they had some back in stock... the U-Haul does not have all the parts that the factory authorized kit has and their module will not integrate into the i-bus of the car...

[JCL]

There are two approaches to both hitch and electrical connections, factory and aftermarket.

For the hitch, any receiver is pretty much the same, but the difference with the OE receiver is in how it attaches to the vehicle. Since there isn't a frame (unibody) the attachment point is critical in the opinion of many of us. The OE hitch includes strengtheners that the aftermarket ones don't, they just bolt on to the sheet metal pan in most cases. If you are just towing 1000 lbs, it doesn't matter much, but if you are towing more, or carrying a load carrier or bike rack that puts a twisting moment on the receiver then you need to judge whether it is strong enough.

For the electricals, the OE module is integrated into the vehicle. That means that the vehicle knows when a trailer is connected. The vehicle turns off the rear PDC (which you can always do manually), and has access to a trailer stability control program that senses extreme trailer sway (it is another mode in the standard dynamic stability control program). The lighting is integrated, which can be important due to the use of low voltage data signals that are employed in addition to the power to the bulbs. If you use an aftermarket kit, it essentially taps into the tail light and brake bulb connections and duplicates them for the trailer. The problem some have had is that the vehicle sees that imbalanced load and can throw up error messages. Doesn't always happen, but has happened more than a few times.

ECS listed the electrical module separately back when BMW was out of stock. It would be worth contacting them if the dealers are currently out of stock. These are not regular replacement parts for BMW (like service parts) because the hitch was an accessory, not an originally installed component. BMW has run out of stock before, and each time there has been a delay and then they got them back in. Not sure if they will do so again given the age of the vehicle, but I would expect them to.

Back when I had my 2003 X5, I rented a U Haul many times. One time they asked me about my hitch. They looked at it. They said it was fine (it was OE). I asked why the concern. They advised that due to problems they had had with X5 hitches that they had installed themselves (the U Haul kit available back then), they had a letter from management that they were not allowed to install hitches or electronics on BMW X5s any longer. It has been a few years, so I expect their hitch and wiring kit has changed since then, but I always remember that their shop wouldn't put their own kit on a BMW. That would make me nervous.

So how much weight are you towing?

[davintosh]

Some of the aftermarket kits I've seen attach to both the unibody and the rear subframe, which seems like a Really Bad Idea™. If you buy the UHaul kit, make sure it's not one of those.

[fuz9]

Most BMW forums will state the same, "Go OEM or go home". The E53 X5 has a towing capacity of 6,000lbs with the OEM hitch.

Aftermarket hitches are going to be more available and cheaper than the OEM kit. The aftermarket kits will tell you they have XXXX capacity but that may not be speficically with the X5 (universal kits or whatever).

Check out this Write Up

The guy explains things even better and claims he bought his kit for $415. On my to-do list is to add a hitch to my newly purchased 4.6is, I'm going OEM

$408 for the OEM kit

[JCL]

Originally Posted by davintosh

Some of the aftermarket kits I've seen attach to both the unibody and the rear subframe, which seems like a Really Bad Idea™. If you buy the UHaul kit, make sure it's not one of those.

The BMW kit includes inserts for the longitudinal sections of the rear unibody that replace the collapsible bumper struts, in order to properly transfer the load. The aftermarket kits generally attach just to the sheet metal, and some have twisted off and damaged the vehicle pan. They have no strength to counteract the bending moment, and the receiver ends up pointing downwards if the attachment point fails.

If I had an aftermarket hitch, I would want one with the longitudinal strut that was added in to resist that bending moment. It doesn't look as good (because it hangs down low), but it will prevent damage to the rear pan. It runs forward to the rear subframe. It wouldn't be my first choice for a hitch, but it would be stronger with that strut than without it if it wasn't an OE design. And if there are no OE hitches available, the OP may have no other option.

[AquilaBMW]

Guys - Thanks very much for the responses. I have decided I will NOT be getting the U-Haul unit, it's just not worth the risk and at about the same price as the OEM one - I will just wait.

JCL - Thanks a mill for the detailed information. I am planning to two a car on a trailer. Not yet sure how much weight that equates to. The car is an E38 and I will be using a U-Haul car trailer for it. As far as I know, the X5 can handle this.

I need to two it 500 Miles - From LA to SFO.

fuz9 - I checked on this kit - ECS is out of stock at the moment and the kit is on back order and I am not sure BMWPartSupply has it in stock or whether or not this is a complete kit like the one ECS offered.

[JCL]

That sounds like about 5000 lbs, give or take. I would make sure I had a solid hitch. Also, make sure you have trailer brakes, as the tow limit with no brakes is around 1600 lbs. The U Haul car trailers I have seen have surge brakes, so you won't need a trailer brake controller.

It would be worth calling a number of dealers and seeing if any of them have an OE kit on the shelf.

[AquilaBMW]

Originally Posted by fuz9

$408 for the OEM kit

Quick question - I went on that site and I came up with a totally different Tow Kit.

https://www.partswebsite.com/bmwpart...page=1&rcatid=

[AquilaBMW]

Originally Posted by JCL

That sounds like about 5000 lbs, give or take. I would make sure I had a solid hitch. Also, make sure you have trailer brakes, as the tow limit with no brakes is around 1600 lbs. The U Haul car trailers I have seen have surge brakes, so you won't need a trailer brake controller.

It would be worth calling a number of dealers and seeing if any of them have an OE kit on the shelf.

Yeah.. that sounds about right and yes, the U-Haul trailers have surge brakes. I am not fond of them, but oh well - they do the job.

We checked all over, no dealers close enough have a kit available. They usually don't stock them.