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No, at least on a 2021 Shanghai 3 its a separate ECU that plugs directly into the harness under the rear bumper. It has an output plug as well which holds a short tail into which you can plug the trailer plug. At least thats how it works on the Euro/Aus vehicles - I believe we have a different...

The car seems to detect the OEM computer being connected but it shows an orange caravan light which I believe indicates that tow mode is not activated despite a trailer being detected. As for why you'd do it - it greatly simplifies sorting out the lights as no cutting or intercepting is...

This sounds way too low. More like the price for them to install the square hitch into an existing tow bar or something. To get working lights you would also need to buy and install the trailer lights ECU which I'm sure will cost several hundred more. Installation of the ECU is very easy though...

Looks like the 3 can tow things quite a long way! https://thedriven.io/2023/01/20/tesla-model-3-tows-boat-3200km-on-epic-road-trip-costing-half-the-price-of-diesel/

I agree that the pricing is a shocker. If I've got the time to charge slowly I'd want to do it cheaply - not at a rate closer to Fast Charging prices. I think they will reduce it down to 40c within a year, if not sooner. Alternately they may introduce a wholly dynamic pricing structure which...

The general location near the end of the freeway makes a lot of sense even if the specific location at a tennis club doesn't. This will be a bit of an outlier for a while until EV charging becomes endemic and widespread.

Thanks mate. I've found a way to make do with the one I've already cut so can leave it for a more needy recipient. On the plus side, I've also cut the factory ECU tail which had a euro 13-pin connector and wired in the more common flat 7 pin connector used in NSW so I don't have to stuff around...

Could I pick it up please? TBH - I've made a bit of a mess of my first one and would like to start over with a bigger hole. Its too hard to get a spanner into the undersize hole I cut to fit and remove the hitch.

The difficulty is getting your hands on the trailer ECU and wiring tail. I imported mine from a European parts dealer. It all went together very easily though and I haven't had any problems with any of the electricals since installing it. It would be good to be able to turn off the rear sensors...

No soldering iron required if you can source an EU trailer light ECU and trailer plug tail. If you can get those parts then its all plug and play.

If it isn't already built into the design I'm sure suppliers will come to the market with options for the Y. We've used our hitch a couple of times now including one longer trip with bikes. Its interesting to see them hanging out in the much higher airflow behind the 3 than our regular car...

It’s an old meme but another weekend has been ruined.

Good news. The adaptor arrived and other than being very difficult to push the connectors together - the whole system works! I plugged in a light board and there were no errors or unexpected behaviours. In fact there was no indication in the car that anything is different at all. I'm super...

The heating/cooling in our 21 MIC SR+ has faulted too. Tesla did some diagnosis OTA when we booked in a service call but didn't elaborate on the problem. I'll be interested to hear what the problem is as it looks like yours will be done before the date of our service.

I installed the hitch (one from Fredrick Machine Works) over the weekend. Reasonably straightforward. The most anxious stage was putting the cut-out into the lower rear undertray to access the hidden hitch. The electronics were straight plug-in but I haven't tested the lights yet as the output...

Well - approximately two weeks after ordering, my OEM trailer ECU and wiring tail turned up today. I won't be able to fit it for a week or so but at least the online store appears to be genuine and not a scam. I'll let you all know once I've got it all installed and running and just keep my...

I may end up just doing that as well. I'd rather a really neat direct plug connection but the risk of stuffing the wiring and the extra faffing about might lean me towards an adaptor. On the plus side I guess it would facilitate towing european trailers if I ever happen to take the car to the UK...

Great. Did you get the tail from the ECU to the trailer plug as well and did you need to rewire it from 13 pin to 7 pin? I bought (or I hope I bought) both the ECU and a short pigtail to go from the ECU to the trailer plug but all they had was a 13 pin outlet version so I'm expecting to have to...

I don't really know what I might need from Tesla to make it work. I was kind of hoping it would just all plug together and be done. I did read somewhere about a trailer mode being activated but I don't know whether that does anything critical or just nice to have features. I just hope Tesla...

Well - in a couple of weeks I'll be able to let you know one way or the other about the Lithuanian supply. I just went ahead and took the gamble. So far so good with some reasonable correspondence with the online shop. It might end up being a dead loss or it might come through A-OK.

What have you guys fitting tow bars to Model 3's in Australia been doing about trailer lights? Using a generic trailer light wiring kit or using factory parts? If I've understood correctly there is a factory trailer light ECU which can be fitted which is just plug and play but it doesn't seem to...