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UberNoob

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Memphis SC knows nothing of this supercharging thing, no PCS parts so Penciled in service apt now for PCS set for June 10, meh 😒
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AlDente

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I don't think "just about everyone here that has a Foundation Series" means what you think it means!

Are you accounting for people like me who haven't had a PCS failure and don't repeatedly make new posts highlighting their PCS failure? Many people have posted over 20 times each on this very topic! A few people have posted a lot more than that, in the triple digits (but I'm not naming names).

I actually feel sorry for people who, like me, haven't had any PCS failure but, unlike me, who have let it become one of the most relevant things in their life even though there is literally nothing they can do about it and, even if it actually happens at a future date, it likely will cost minimum time and effort. The "fix" Tesla has implemented until they can get the required parts to fix the problem is very commendable and Tesla Service Centers will only become faster and more proficient at installing the new part. To me, it's a big nothingburger. If my PCS fails, it fails. I can't do anything about it. At least I can still access Superchargers and continue to drive the truck. I already drive by multiple Superchargers every week that I never use.

There are far too many people being overly dramatic and making irresponsible statements (like just about everyone with an FS has already had their PCS fail).
It's the ever popular "stamp their tiny feet and hold their breath" crowd. We all knowingly bought a vehicle chock full of new technology. To expect zero issues is a good example of not understanding the Cybertruck risk/reward proposition. The cries for the NHTSA nannies to step in are incredibly naive. I think Tesla is handling this as well as can be expected and owners are responding like people do. Some rational folks who are cool calm and collected and then there are the pants on fire segment who of course are very vocal. As Pete Townshend queried, who the f*** are you?
 

sys700

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Interesting claim about the percentage. It seems that just about everyone here that has an FS has had it happen. That said, even if the percentage is below 20% it is a large enough number to warrant a recall.
I have an FS Beast (August 2024 build) with 24k miles and it has not happened to mine yet (knock on metal). I only supercharge on long trips. I have a Homeshare backup system. I regularly charge to 100%. I have a long road trip planned for June so I'm a bit nervous.

PS: I have a service appt scheduled for cantrail replacement. I will just keep moving it out a month until the PCS issue hits, then add it to my cantrail service appt.
 
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Sjohnson20

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no PCS failure for VIN 1955 here. I have 25k miles.

Why can't they just update all trucks to take Supercharging when the PCS fails? Or does that stop AC if the PCS still works?
 

jsoldo

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As my PCS repair sits at "Parts In Transit" and charging at 24A (11 mi/hr), this would be awesome if true...
 


Jhodgesatmb

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I have an FS Beast (August 2024 build) with 24k miles and it has not happened to mine yet (knock on metal). I only supercharge on long trips. I have a Homeshare backup system. I regularly charge to 100%. I have a long road trip planned for June so I'm a bit nervous.

PS: I have a service appt scheduled for cantrail replacement. I will just keep moving it out a month until the PCS issue hits, then add it to my cantrail service appt.
Good luck friend. The last thing I would want is to have the PCS problem happen on any kind of road trip, especially in states with fewer superchargers and service centers. I am thinking Wyoming and Utah in the west as I have driven both of them and finding superchargers is already an issue there in the winter (reduced mileage).
 

sys700

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Good luck friend. The last thing I would want is to have the PCS problem happen on any kind of road trip, especially in states with fewer superchargers and service centers. I am thinking Wyoming and Utah in the west as I have driven both of them and finding superchargers is already an issue there in the winter (reduced mileage).
Thanks...I'm heading to Canada, so even worse SC coverage I would think.
 

CheddaTruck

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Figured I’d drop a proper update since this truck continues to refuse a normal existence.

For anyone keeping score... Yes, this is the same CheddaTruck that had its odometer reset like it was trying to wipe its criminal record. So naturally, things have only gotten more normal from there.

About a year ago (around 20k miles), I had it plugged into shore power, nothing turned on, no outlets enabled, just sitting there minding its business… except the Christmas lights I had plugged into the 120V outlet were glowing!! Not flickering, not barely-there ghost voltage—actually mostly on, like the truck decided it was time to celebrate something.

Took it to Tesla, they verified it, compared it to another truck, and told me “slight residual voltage while charging is normal,” which is apparently the technical term for your truck is a little haunted but in a festive way.

Fast forward to now (~50k miles), and I’ve got a PCS failure... charging is cut in half, and, conveniently, so is my onboard AC output. Which is funny, I was just told the outlets are just low-voltage AP system stuff and not really tied to PCS like that.

Tesla Cybertruck Tesla pushing update failed PCS to enable supercharging while awaiting PCS repair part 1776794220776-yy


Doesnt the PCS convert AC to DC to charge the HV battery and is the same unit that converts HVDC to AC to power the plugs/powershare? or AM i wrong?

So either my truck is the greatest coincidence generator ever built, or that earlier “totally normal” electrical behavior might have been trying to tell us something. I’m not even trying to argue schematics anymore, I just know the truck was doing electrical things it shouldn’t have been doing while it was under warranty, and now the part responsible for power has decided to half-retire right after I crossed 50k. Timing is incredible.

Curious if anyone else has seen outlets energizing while plugged in, weird AC behavior during charging, or PCS issues after earlier quirks, because if not, I’m ready to accept that CheddaTruck is just built different… and possibly possessed.
 
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Figured I’d drop a proper update since this truck continues to refuse a normal existence.

For anyone keeping score... Yes, this is the same CheddaTruck that had its odometer reset like it was trying to wipe its criminal record. So naturally, things have only gotten more normal from there.

About a year ago (around 20k miles), I had it plugged into shore power, nothing turned on, no outlets enabled, just sitting there minding its business… except the Christmas lights I had plugged into the 120V outlet were glowing!! Not flickering, not barely-there ghost voltage—actually mostly on, like the truck decided it was time to celebrate something.

Took it to Tesla, they verified it, compared it to another truck, and told me “slight residual voltage while charging is normal,” which is apparently the technical term for your truck is a little haunted but in a festive way.

Fast forward to now (~50k miles), and I’ve got a PCS failure... charging is cut in half, and, conveniently, so is my onboard AC output. Which is funny, I was just told the outlets are just low-voltage AP system stuff and not really tied to PCS like that.

1776794220776-yy.webp


Doesnt the PCS convert AC to DC to charge the HV battery and is the same unit that converts HVDC to AC to power the plugs/powershare? or AM i wrong?

So either my truck is the greatest coincidence generator ever built, or that earlier “totally normal” electrical behavior might have been trying to tell us something. I’m not even trying to argue schematics anymore, I just know the truck was doing electrical things it shouldn’t have been doing while it was under warranty, and now the part responsible for power has decided to half-retire right after I crossed 50k. Timing is incredible.

Curious if anyone else has seen outlets energizing while plugged in, weird AC behavior during charging, or PCS issues after earlier quirks, because if not, I’m ready to accept that CheddaTruck is just built different… and possibly possessed.
The ACJB connects/ switches the outlets, charge port, and PCS DCAC modules. If the Christmas lights were on while you were charging, the ACJB might have an issue.
 


nevetsyad

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no PCS failure for VIN 1955 here. I have 25k miles.

Why can't they just update all trucks to take Supercharging when the PCS fails? Or does that stop AC if the PCS still works?
They're pushing an update that will allow them all to supercharge after the failure. And giving free supercharging. But it's Tesla, so it's going to take a few weeks to roll out I'm sure.

Apparently, if you let them deep sleep, the error goes away and most can supercharge soon after. AC still dead of course.
 

REM

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The failures and symptoms point strongly to inconsistent MOSFET reliability. It's the nature of solid state components that they come from their supplier with a range of specs. Not every component is identical from a performance/reliability perspective. Tesla can save money by buying lower spec MOSFETs too. It looks to me like they had too much variation (or Tesla was specifying too close to the failure point under certain use cases). The likely conclusion is that only some of them will fail.

The fact that Tesla has not issued a model-wide recall (and has delineated certain VIN numbers as more likely to fail) supports this.
absolutely spot on. could also be a case of a vendor not delivering the specs Tesla agreed to, like the cant-rail glue.
 

Cyberdoc18

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So many trucks...
So many threads...

You might be able to restore limited charging if you unplug, set it to lower power mode, and let it go to sleep for a while. It will do a new health check when it wakes. Low probability of it working, but minimal effort to try.

Happend to me this morning dropped off at service center
 

Cyberdoc18

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They need to take apart the entire front end to gain access to the pcs2 my service guy said it take 10 hrs ouch!!!
 

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