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Can you charge on 240v but set the charge current to it's lowest?

This might help, not 100% sure, just looking at my old notes, see if any ones are different than the others. BMB connector Pins 4, (16 to gnd) Temp resistor 1, measue to Pin 15 on MCU. 6, (18 to gnd) Temp resistor 2, measue to Pin 22 on MCU. 8, (20 to gnd) Temp resistor 3...

There a few different ways, like IC swaps, programming, etc...

Yep I've encountered bad BMB reporting bad temps. Though I was lazy and just used another BMB instead. I'm sure it would have been easy to fix though.

Under the PEM.

"I'm guessing that an incorrectly hot reading would be a shorted connection, either across the sensor or perhaps between one lead and chassis ground, as opposed to an open / loose connection. Where would I look? Where is this wiring?" If i remember right there are two temp sensors, same...

Also doesn't the VMS uses GPS via serial to keep track of charging preferences at locations? Maybe GPS sent invalid/wrong info at the time? your GPS firmware been updated?

I've had higher PEM/motor temps due to fan blowers bearings going bad (as they spin slower) and got PEM temp errors. Also I could notice it when charging that the blower fans were making louder noises/spinning slower. After replacing the fans I no longer saw the temp issues.

Flash going bad could cause it to crash/reboot. i.e. VMS Fflash replacement Or maybe bad code was hit, and crashed the process, and the watchdog rebooted it.

Odd order of investigating. Anyways for "it shows one of the brick is -104 degree Celsius," it's either the temp sensor in the sheet or BMB on that sheet. Curious which shop is doing the work?

If the handle is flipped up at 90 degrees with the horizon. and you pull it out straight it shouldn't break.

maybe? About Us - Find My Electric

Yeah I've worked on Roadster packs where ~40% of the ultrasonic welded sense wires have fallen off for some unknown reason (moisture?)

I'm also working on a battery sheet replacement/refirb, as cells will be replaceable if they do go bad in a brick.

iphone batteries all use these higher voltage cutoffs, and they all have predictive degrade curve over use. You can see the delta voltage difference here in mah. https://www.thunderheartreviews.com/2018/08/li-ion-435v-vs-420v-sanyo-ur18650zta.html

That orange service disconnect is bane of newbies, break easy if you dont know how to pull it properly. I have a spare and I know Carl has a bunch them in stock. Like Marco says "There's a microswitch in the batterycase", you can hear the micoswitch click when you flip down the handle if you...

Any idea what process has the memory leak?

Good call ML Auto, this is prob the right thing to check!

Power output limiting for ESS is often due to low battery SOC, high/low Temps, or lowest brick voltage, for which I don't see on your photos. Next up would be to look at Motor temp, and PEM temp on the screens next time you drive when it has lower kw output.

I would grab the log and use VMSParser to see it's CAC over time.

If i remember right BMW 330xi lug are the same.

I figured the pinout of the APS on Roadsters 1.5 and able to bench test the outputs, I believe the 2.0 are somewhat the same. In theory one could make their own APS down the road if they become unobtainable.

2.0 Roadster's HVAC units, the power status LED is at HV battery levels, and is super close to the frame of the car. Oversight for sure, as it can cause Isolation faults when you key on the car. Fix is either disconnect the LED, or relocate the LED and use light-pipe for proper HV clearance.

RMS was bought out by cascadiamotion.com, we took the roadster motor to their Dyno to have it tuned to their motor controller.

That is super weird, busybox removing these files? Only way I can think of when these files are touched is doing a forced update over CAN (that gets interrupted). On b) no easy way to do that via the VDS, can you program OVMS in to telnet in (over CAN) to issue the VMS shutdown command?

Were the wires just brittle over time or actually burnt brittle? Interesting none the less. It's not unheard of having older 2G baseband modem to go bad (i.e. has it's own eeprom/microcontroller/PMIC on it).

Yes there is only 1 microswitch. when you put down the handle you should hear a slight click of the microswitch. Also when you first plug in the service disconnect do you hear a slight pop sound? It's the spark created from of the battery charging up the caps in the APS. Also you can open the...

The car will balance when the car is off, and battery pack is near full, check service menu and look at balancing grid to see when it's balancing. If car can't self balance after a week or so, then likely bad cell in that brick.

BMB has SMT fuses on each sense wire. Why is that brick out of balance?

There is already an fan in the PEM to circulate air, likely guessing it will be good enough.

Yep anyone with common sense uses 2x4's to prevent the sheets from falling backwards. sad I don't them in use in the videos.

Agreed, to me Weber HV videos are the gold standard in dealing with HV EV batteries.

If I'm seeing the picture that correctly I'm seeing 20v for the closest sheet.. that is 2.2v per brick/cell, they really should be monitoring every brick voltage as they charge, which they don't seem to be doing. That would place it beyond my comfort/safety levels inside an shop.

If i remember right, after driving, when you parked, pull up on the ebrake to see TPMS menu on VMS.

On the ESS. Look at front left rear wheel.

Also here is the part number last time I bought one from Tesla service ~2014.

PM'ed

There are two 12v power sources, but since you likely dont have APS enabled due to service disconnect switch (microswitch) is open... get new service disconnect first then try again.

Amazing!

Just FYI, if you have flash going out, you can pull the flash ic, dump it, then reflash to new one and then solder back in. From what I can tell the flash isn't written very often, mostly it's just logs, and it's filesystem i think uses wear-leveling.

Sold.

Working Roadster Sport 2.X drive train. note only 1/2 of the plastic fan shroud is present. $11,000 + LTL shipping fee. PM me for questions.

Open inverter might not like the roadster's low inductance motor, though we did get the Rinehart motion PM250DZ working with it (with some custom tuning).

Ive used an PM250 - 250kW and had RMS tune a roadster motor for it.

Again spouting stuffs without facts to back them.. you just join today and started this thread and is spreading false info...

You have no real data to back up your illogical conclusions, your simply trolling now.

Nice that's it out, and you have HV experience, you can take the front cover off, and you then can measure each sheet voltages (there is 11 of them). Once you have those numbers it should give you more information on what to do next.

Wow lots of misinformation here... others will correct you. The BMS will handle a lot, but simply put the End user can control cycle count, SOC, and pack temp (somewhat i.e. garaged or not) that directly affects SOH of the battery.

How much time has passed since it was disconnected? Is the ESS out of the car?

Yes in my view, note I have tested model 3/S, Roadster etc.. cells and have built BMS systems.