TowBar for the UK

[UKenGB]

I know a fair bit has been written about fitting a towbar, but I thought I'd add some UK specific info.

First of all I established that the BMW OEM kit is made by Westfalia and their towbar kit (part no. 303207) appeared to be the same as that fitted by BMW, so at half the price (i.e. UKP 220) I was prepared to take the chance. BUT I decided to buy the BMW supplied wire harness and special relay because:-

1. I wanted to be sure I had the right/best electrics.
2. It was cheaper than that available from the 'discount' towing suppliers. Also, BMW supply a 13 - 7 pin adapter FREE. Yes, really, FREE.

I ordered the hardware kit from an eBay supplier and when it arrived got the shock of my life - the box was so heavy I could barely lift it. In fact dragging it across the floor was about all I could do.

I followed the various intructions available from here and also the Westfalia info that came with the kit. Some steps were not obvious, but it all came apart without much bother. Except that once the bumper shocks/brackets had been removed it took me some time to to work out that the large plate that runs between those 2 mounts and also to the body at several places along its length also needs to come off.

This was a blatant error in the Westfalia instructions as NO mention was made of this item, nor did they mention that the plastic spacer tubes from inside the original bumper mounts should be removed and re-used in the replacement equivalent. The instruction show that you remove the shocks/brackets and throw them away, so if you do follow this, you will be grovelling in the bin later to get these spacers out.

Following the re-assembly instruction failed to illuminate any more gaffs and it was all quite straightforward. However, I would advise that the 2 long bolts on each side that secure the new bumper mounts to the new towbar are left hand tight until the bumper complete has been refitted. In this way there is some adjustement that can be made to ensure correct alignment of the bumper. I used a small scissor jack each side pushing up on the Torx 55 socket fitted into the big mounting bolts to hold the bumper up while I finally tightened the inner nuts to hold it all in the correct position. Then I did it again twice more when realising I hadn't got it quite right - but you get the drift:-).

The kit includes the bracket for securing the swan-neck/tow hitch alongside the spare wheel and I am quite sure all the parts are the same as in the BMW kit. Did I mention it's only half the price of the latter:-) The final proof is that a BMW supplied towhitch not only looks identical to mine, but is interchangeable in the actual socket, so IMO it IS the same kit.

All in all it probably did take a surprising 6 hours, but undoubtedly half that if I had to do it again. Probably the most irritating aspect of the whole job is that every time I leant against the tailgate, the electic release would click/clack and the Navigation DVD would start whirring. Quite why I ALWAYS seemd to lean on exactly that spot I don't know. Next time I may just disconnect the battery first:-)

[AW8]

I appreciate this thread is getting on a bit but I for one have found it very informative. If nothing else me posting here will bump it and perhaps allow others to benefit from your shared experience.

Have been researching same with to possible future fit of detachable bar and dedicated wiring kit to my 2002 4.4i Sport. Was aware westfalia towbar components were one of the same & understand fitting the correct wiring kit will, (when activated by plugging in the trailer socket), tell the car that a trailer is connected and initiate what some refer to as a "trailer stability programme" ammending the cars DSC settings/parameters when towing. Buying a BMW wiring kit makes sense but would be keen to know if there are replica wiring kits otherwise branded too. I see relays can be bought which merely trick the car iinto thinking it doesn't have a trailer on the back plus allowing trailer electrics to work. Persoanlly a dedicated kit is the only way to go ( considering worst case scenarios when towing). Would be intersted to know what the wiring kit actually does specifically in relation to DSC/Trailer stability and/or other electrical functions, (i.e. dash warnings etc if bulbs blow in trailer).

If you have time I would be interested to know whats involved in the instalation of the BMW wiring kit. It would good to know if wiring instalation is simple or not. I have seen other informative posts by you and it would be fair to say your knowledge of electrics may be superior to mine - just assume you posting info for the village idiot and I should keep up - lol.

Thanks anyway for info to date in any case.

[UKenGB]

I didn't find any third party wiring kits that were cheaper than the BMW one and as I knew that would work perfectly it wasn't a hard decision as to which kit to buy.

As far as fitting the wiring is concerned, piece of cake. No holes need drilling and it simply plugs into the main harness. The instructions give adequate advice on routing.

Overall the fitment was quite straightforward.

[JCL]

Originally Posted by AW8

Would be intersted to know what the wiring kit actually does specifically in relation to DSC/Trailer stability and/or other electrical functions, (i.e. dash warnings etc if bulbs blow in trailer).

If you have time I would be interested to know whats involved in the instalation of the BMW wiring kit. It would be so good if wiring instalation is simple or involved.

The wiring kit consists of a control module that plugs into the BMW vehicle harness, and then a harness from that module to the hitch area.
The module probably doesn't have much inside it, but it is a dedicated BMW part, not something that others will likely ever produce. Recommend you just get the OEM wiring kit.

The module causes the trailer stability program to function (it senses sway). It also de-activates the PDC back-up sensors on the rear when the trailer is connected, otherwise the PDC goes off every time you put it in reverse as it sees the trailer. The module takes a signal from the lighting circuits (stop, turn, tail) and powers up the harness without changing the load on the vehicle circuits, which could cause a sensing fault for a bad bulb. The module does not sense that bulbs are out on the trailer circuit if they do fail.

I installed the wiring module in about 15 minutes, as part of the hitch install. Hardest part was finding where to plug it in, and releasing the snap on the harness plug. It plugs in around the spare tire, runs through a rubber grommet in the rear pan, and to the hitch area. No special tools required.

[AW8]

Thanks Guys - Just the info I was hoping for - appreciated.

[matthew gleeson]

have any of you come accross a towbar from a manufacturer called "oris"
for the e53 model

[trapdoor]

Originally Posted by matthew gleeson

have any of you come accross a towbar from a manufacturer called "oris"
for the e53 model

My factory fitted towbar on my X3 is made by Oris. Had some issues as I was only supplied with one key by the dealer and BMW cannot get replacement keys, even though they are listed in the EPC.

Am quite impressed with the build quality of the Oris kit, and their customer service is excellent. I contacted them and they sent me a pair of keys to fit; MUCH cheaper than the BMW listed price too.

It seems that BMW use various suppliers for Factory/OEM fit, Westfalia, Oris and Bosal (Oris are now part of Bosal I believe).

[matthew gleeson]

i have bought an oris one from germany on ebay i has stated clearly that it is for an x5 e53 although it looks well different from the westafalia , i am only sounding things out before stripping off the bumper etc, i also ordered and took delivery of a wiring kit but they seem to have sent me the full harness and not the trailer socket and plug in control box

[AW8]

Searching on internet showed the name oris as assocaited with bosal http://www.oris-gmbh.de/Oris-Matic/E...rzeuge_EN.html the link does not show bmw x5 compatability. Bosal do make towbars although the bosal ones I have seen compatabble for E53 are swan neck and not detachable like the oris.

I know you're not in the UK but if I fitted one I would probably keep things simple and go for the westfalia detachable.

[AW8]

Best you give the seller a call. There are dedicated wiring kits and plain simple relay kits that just allow trialer electrics to work.

BTW I typed in oris towbars on ebay ireland to get 1 live and 2 completed listings - all Ford compatible items so assuming it was bought a while ago. Only Bosal one for E53 is a swan neck click here to view