After a night of charging outside is cold weather, I noticed one end of the UMC cable is split open. Had it for 8 months. Anyone else had that issue? I'll bring it in to the SC. Just curious.
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Split UMC cable
- Thread starter steilkurve
- Start date
Pictures? I wonder if it might have dragged across something to cut, or does this seem like a dry rot-like situation?
There's the picture. Like the car itself, I baby everything related to my Model S. Can't remember ever mistreating that cable. Anyone seen anything like it?
It does but then again, not sure how or when it would have happened. I was at cottage in the middle of the woods. Unlikely someone stopped by and decided to vandalize my cable. Plus, when you look at it closely, it is a very clean split. A cutter would have made a larger incision at the entry point. And it doesn't look like the wire itself was touched. It would take somebody very skilled to just open up the insulation. I wonder, could it be the cold weather? The rubber hardened and cracked up, especially with heat running through it?
islandbayy
Active Member
Thats what happens when poor/low quality "rubber" fatigues. That is not box cutter. I deal with this all the time on Chinese scooters I repair. Its not real rubber, it's a petroleum base, or basically, more malleable. Most likely, the plastic/fake rubber was not hot enough when it was extruded. Also, more likely to happen in cold weather. And by the looks of it, OP is in Canada.
Yep, am in Canada. Plus I was at a cottage in the mountains. Coldest night so far this Fall.
islandbayy
Active Member
Yep, that stuff is extremely pliable at warm temps, once it gets cold... Lets put it this way, had a floor mat from a Chinese scooter. At 10*F outside, I was able to toss it in the air and it shattered when it hit ground. I hope whats on the UMC isn't that poor of quality though.
So I called support who directed me to my local SC. Stopped by Thursday and they swapped my UMC for a new one. Said first time they saw that. As usual, super easy and friendly staff. Was all effortless!
Hadn't tried the new UMC until today and I'm afraid I must be not doing something. I plug it in. Green light is on but the button won't open the charge port. Opened manually and plugged in, ring stays white, plug doesn't lock in and UMC doesn't charge. Tried Reset several times to no avail. Also tried both 5-15 and 14-50 adapters and sources.
Meanwhile car charges fine using my HPWC.
Is there a pairing process with a new UMC that I somehow missed?
Hadn't tried the new UMC until today and I'm afraid I must be not doing something. I plug it in. Green light is on but the button won't open the charge port. Opened manually and plugged in, ring stays white, plug doesn't lock in and UMC doesn't charge. Tried Reset several times to no avail. Also tried both 5-15 and 14-50 adapters and sources.
Meanwhile car charges fine using my HPWC.
Is there a pairing process with a new UMC that I somehow missed?
islandbayy
Active Member
islandbayy
Active Member
I've gone through 15 in 2 1/2 years. Though, I finally found the problem I was having was due to charging at 40 amps every night. Once I limited it to 32 amp or less, no more problems.
I'm on #10 myself. Also charging at 40A. You are 100% correct, the UMC cannot take constant 40A charging.
islandbayy
Active Member
No, but it does happen. Call Tesla Support, they will FedEX one to you with a return label if you are further distance from a service center.
mikeash
Active Member
The UMC is just a J1772 charger with a custom connector. J1772 is a pretty simple protocol, basically just different resistors and duty cycles on the control pins to tell the car how much current it can draw, and for the car to tell the charger when it wants power. There's nothing in there to communicate a car or charger identifier.
In short, no pairing process, it should just work when plugged in.
Cyclone
Cyclonic Member ((.oO))
Before going through all that, have you checks to see the pins are clean and there isn't something gunked up in the connecter where it plugs into the car?
Yep. Thought of that. Plug is (or looks) brand new. Nothing seems to block the connectors.
Cyclone
Cyclonic Member ((.oO))
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