Reprogramming the tails on your UMC
HTML-код
- Опубликовано: 12 сен 2024
- Have you got a Tesla UMC (Universal Mobile Connector)? Do you get the full rated 10 amps or 15 amps? If not then this will help reprogram the tails from the typical 8 and 12 amps up to the correct 10 and 15 amps.
Actually better than Tesla guides. Worked on my 2024 model 3.
Super helpful guide, worked exactly as you have described
Glad to have helped
Thanks Bud yes requires the car be locked and above the current charge limit to do the firmware update. It frustrates me that we need to support each other and not be able to simply find this in Tesla doco.
Thanks So much for your video
Just remember that not all tails can be updated to 10 and 15 amp and some OTA updates actually interfere with it making it impossible to do until corrected
Thanks for the video. However my UMC just automatically updated itself today. First time charging my new 2024 Model 3, I plugged the UMC in and it was limited to 8A max initially, so I just let it charged at 8A. I closed all the car doors and left the car alone, I did not lock the car, shortly afterward the car switched off the central screen and the UMC stopped charging by itself. I then checked the Tesla app on my phone, it now says it can charge up to 10A max, so I just restart the charging again at 10A. I suspect Tesla must have updated the software since you made this video and now the UMC can automatically update from 8A to 10A max.
More than likely. I am about to go away for just over a month so probably wont have time to investigate
Well done Grumpy I had to follow your procedure today! Thank you!
Glad you found it helpful George
Thanks Grumpy I believe you may have just solved my problem trying to reprogram my UMC. Ive been trying this method in my garage at home but my vehice is never locked at home. So as soon as I get home from work ill follow this guide with my vehicle locked and hopefully the UMC will update.
I hope it works for you
@@grumpyoldmanandhisev It did work, thank you so much
@@davewalk0561 Excellent. Glad to have helped
On a trip ATM and charged with 10A tail to 100% (overnight) at 8A max It sat connected (fully charged) before we left the next morning. Last night we charged again with the same setup and the app reported 10A - I gad to dial it down slightly because we were on a shared circuit.
Thanks G.O.M. Because the tail plug doesn't come out vertically makes it impossible to plug into caravan park power boxes. A short adaptor cable can be made (0.5M long) to allow charging there.
Agreed. Actually went down to a local caravan park to try it. Managed to get it in but had the devils own job unplugging it! I think anyone staying at caravan parks should take a short extension cable for just that and also a long one for unforseen problems
Thanks for your helpful guide. Like others, I am not having the success you had. Following your procedure and sequence, I get the clunks but no flashing of the T on the UMC. Some questions:
* Did you leave the UMC plugged into the Tesla for the entirety of the procedure?
* Was there a particular sequence for plugging the UMC in (Car then mains; Mains then Car)?
* Did you switch on the mains connection to the UMC before plugging into the Tesla?
Many thanks
Yes I did leave the UMC plugged in the whole time.
No - just plug it all in in no particular order
I have since discovered that Tesla have found there is a problem with some cars/UMCs not updating and they are aware of it and it will hopefully be fixed in an update
I can't get this to work. I've left it on overnight on 100% numerous times but nothing happens. Always stuck at 8A.
Tesla has advised that there is a problem with some UMCs not updating properly. It is hoped it will be fixed in a later update but I have no idea when that will be
Sorry but this procedure doesn’t work on my new Model Y. I have tails labelled 10A and 15A. I followed your exact procedure twice, lowered charge limit to well below my SOC, unplugged UMC and locked car. The car is connected to my WiFi. No joy!
I have since found out that there is a problem with some of the UMCs or the Tesla which is causing them not to be updated. Tesla have said it will be fixed in an update
Cannot for the life of me get my UMC to update. Tried every step multiple times, with both 10A and 15a tails and no luck.
Bummer. Have you checked that they are actually rated at the higher amperage? Also ensure the car is NOT drawing any power for any reason ie close all doors and lock it
Yep done all that. Other Comments on this video have confirmed it’s a firmware bug and known to Tesla.
are you "reprogramming" the tail? or have you simply set up the conditions so that the car updates the firmware/config on the UMC?
The UMC is getting updated
Can you reprogram the Tesla Wall charger in the same way? I have a 25A RCD on the charger, but it shows 20A max in the car and the plus button is greyed out.
Which gen wall charger? Do you have 3 phase or single phase?
@@grumpyoldmanandhisev Single phase Gen 3
@@kmay860 When they connect they talk to each other and the car says this is what I can accept and the charger says this is what I can give you. It looks like the charger is say I can give you max 20 amps. There may be some DIP switches inside the charger that have been set at 20 amps by the installer because there is only a 25 amp RCD on it so for safety
Gotta luv the hacks……
hi can you tell me what accessories you have for your model y and were to get them as i have order a y myself
In Australia I have ordered from tessories - interior rubber mats. Also the seat backing protection from China as they werent available here at the time. Awaiting from the mudflaps to come back in at tessories. Also have been given a screen protector, cup holder insert and tray insert for the storage compartments between the front seats
Not sure what am I doing wrong but my umc wont update.
My car is in underground parking - little to no service (internet) there. Would it affect?
The car needs the internet service. Also did you check that the tails are capable of the higher rate - check on the plug to see if it says 8a or 10a
@@grumpyoldmanandhisev “internet” as in Premium Connectivity (not even sure if signal is strong enough from the dungeon)?
Or wi-fi
@@igortrandafilov2504 either but I think WiFi is preferred
Mine won’t either and I’ve done everything. I have full wifi too so very frustrating
@@arnienz1962 seems Tesla is aware of the bug. It is a bug.
“**UPDATE** I have just received confirmation that this is a firmware bug not allowing the UMC or Wall Connector chargers to update via the vehicle firmware. We do apologize for inconvenience, engineering are investigating and hoping to fix shortly.
Apologies again for the inconvenience,
David - Tesla Service”