Not sure if anyone can confirm if the aforementioned update fixed the issues. I have a 22 MS LR (I know this is a plaid forum). Wanted to make this group aware that I’m experiencing almost of of these issues with my LR while super charging - both at 150 & 250 Kw stations (my horn also randomly goes off 1-2 times as well. I have an appointment on 1/17 to see what’s going on. Every time I have to hard reboot after charging to get the car back to normal.
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Refreshed Model S Plaid MCU hard resets repeatedly during Supercharging
- Thread starter electrongofast
- Start date
I would set up service ASAP at Tesla. Mine has problems at superchargers too, but not like yours!
The following information is needed for Tesla to diagnose, assuming you also made a service ticket
- Date and time of the event, down to the minute, eg YYYY/MM/DD HH:MM AM/PM
Thank you- yes, I’ve been updating my service ticket every time it happens. My appt got moved up to the 14th. Fingers crossed they find the issue and fix it
M4H4X
Member
Update from Tesla:
As I suspected, no obvious hardware issues. That's not to say that it still could not be a hardware related issue that's hard to detect with whatever data they have available.
But I did my part for now, so hopefully they got some useful data from it.
If you're having this issue make sure to setup a service appointment so they can pull logs as well.
The more data and cars with this issue they get, the more likely they are to find a fix (albeit hardware or software).
As I suspected, no obvious hardware issues. That's not to say that it still could not be a hardware related issue that's hard to detect with whatever data they have available.
But I did my part for now, so hopefully they got some useful data from it.
If you're having this issue make sure to setup a service appointment so they can pull logs as well.
The more data and cars with this issue they get, the more likely they are to find a fix (albeit hardware or software).
Did they request a specific date time of the event? The SC team here requested timestamp, I assume for them to study the log files for repeated resets.
I am suspicious of just relying on self-reported diagnosis, since forced hard reset may not allow the software to explicitly log the issues prior to crashing.
M4H4X
Member
I experienced pretty much all of the errors [you] described above.
Just got the car back from service. They replaced the “Car Computer” as well as a “thermal unit” (fortunately, my car reproduced all of the errors for the service team when they charged it).
Service Team doesn’t know why some are failing so they shipped the old computer back to Fremont engineering to diagnose. Good news… it drives so much better - smoother. Bad news is ALL personal settings were erased - had to spend about 15 min in the parking lot to reprogram (worth it). Hope this helps and good luck with your fix. I’d recommend your service center call mine (Jacksonville, FL) if they’re stumped.
Proppilot
Member
I have had one Supercharger session where the MCU was doing back to back reboots about five times. I terminated the session, waited a bit and then did a two thumb reboot and all was normal. I suspect per others that the MCU is overworked during Supercharging as I bet the batter condition monitoring takes a ton of CPUs and likely experiences a memory leak.
Same here. Did Tesla service able To fix it? What was the cause for this malfunction?
Their telling multiple Refresh X owners this is just a firmware bug, and then they update the firmware and the problem persists.
Is anyone NOT having this problem when supercharging their refresh? Seems to be rampant on the refresh X:
Wiki - Model X Refresh Issues Thread
Does the new MX come with any complimentary SiriusXM? Nope
teslamotorsclub.com
Or overheating issue and the fix will be to chargegate supercharging speed. They already did it to all the 400v 85s.
WilliamG
Hinge Fanatic
I Supercharged just once in my 2021 refresh at a V3 and had no issues.
Proppilot
Member
I had these issues back in September when I got the car but have not had any bad behavior when supercharging since and I have probably supercharged 10 times since then.
22 Plaid Feb build, 1500 miles and i just did road trip this past weekend. 3 supercharging sessions.
1. Seems to be normal except the AC fan went to max, but was able to charge from 30% to 85% with no issues. I was using Disney and we did not see any reboots. Station was 250kw but was throttled down to 150k due to high usage
2. Next day same SC when my car went crazy with the multiple reboots. I was charging from 40% hoping to get it to 90% so i can get home without charging again. I had to stop the session at 60%. No errors on screen. After this i noticed my backup camera was black so i did reset the MCU (no brake) and camera came back online.
3. last session was at another 250kw SC. No issues at all from 30% to 80%. I did set the fan manualy not Auto and i did not notice any issues and AC fan did not kicknto max.
This is very concerning, what if the car stuck and i could not disconnect the SC cable and gets charged idle fees for god knows how long. Any ideas? This is my first Tesla.
I have my 1 st appointment with Tesla in 2 weeks (fingers crossed they wont reschedule again) so I added it to the list of items to report
1. Seems to be normal except the AC fan went to max, but was able to charge from 30% to 85% with no issues. I was using Disney and we did not see any reboots. Station was 250kw but was throttled down to 150k due to high usage
2. Next day same SC when my car went crazy with the multiple reboots. I was charging from 40% hoping to get it to 90% so i can get home without charging again. I had to stop the session at 60%. No errors on screen. After this i noticed my backup camera was black so i did reset the MCU (no brake) and camera came back online.
3. last session was at another 250kw SC. No issues at all from 30% to 80%. I did set the fan manualy not Auto and i did not notice any issues and AC fan did not kicknto max.
This is very concerning, what if the car stuck and i could not disconnect the SC cable and gets charged idle fees for god knows how long. Any ideas? This is my first Tesla.
I have my 1 st appointment with Tesla in 2 weeks (fingers crossed they wont reschedule again) so I added it to the list of items to report
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