PCS Failure - Can’t charge at all

[Peterwtf]

What’s the likelihood Tesla replaces the PCS before it goes bad?

Unless there is a recall, l doubt the dealer will replace a functioning PCS. But that's where I say you have to put in your 2 bits and argue with them. As for ongoing PCS malfunction, I would think they would have fixed it or they really open themselves up for lemon lawsuits. Had I known that this problem existed, I would've gone to my dealer and try to get a replacement. I, like most people here, love my truck. Until this issue, I thought I was really lucky with minor issues. And, because this was a known issue, I thought the dealer would take care of it. But, the service manager changed his tune. I think the only way this is going to get some traction is if enough people stir the pot. That's why the people that has working PCS should go and complain and get a replacement asap. Or gamble that it might go bad after warranty. As for everyone else, even if you got it covered with the warranty, if you put your issue with the NHTSA, maybe they will issue a recall based on the numbers and/or feel that this could've been a safety issue. It's really disappointing that Tesla is not taking care of their customers. I don't mind paying for maintenance, but this is a known defect that they're just trying to pay as little as possible. They can lose fans like this.

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[Outdoors]

I would suggest people go into the service menu proactively and screenshot any issues with over temp and the PCS area.

My recent service visit they tried to not address it. It is going back next week.

Example I had an ABS error that said pullover and try again BS. I screenshot the error and the fact that it says service fix, and inspect to see if replacement is needed. They discovered an overcurrent that caused the issue, but it is documented. They wanted to know why I went into the service menu.

Dumb F's. Me truck made me pull over to the side of the road I want to know why.....

So if one brings it to the attention it needs to be on the service log. Not just verbal.

 

[Jay123]

Mine just went out 2024 41k miles. Appointment on 11th

 

[noobla3]

Looks like a FS only issue. I may submit a service through the app just to suggest a replacement due reported failures and see what I get back.

 

[kpanda17]

I asked and he said they couldn't do anything. I just picked it up on Thursday. I'm going to message the manager and try again.

I don't know of the part they installed was updated or not. It was:
POWER CONVERSION
SYSTEM -
48AMP(1777777-T2-G)

The SA didn't think it was an updated party, but wasn't sure...

Think PCS2 is the G rev
My July 2025 just had the PCS replaced with Rev G
Last night charged to 323 kw

 

[kpanda17]

What’s the likelihood Tesla replaces the PCS before it goes bad?

If your are experiencing slow perf for L2 or L3 charging, getting 90-100kw instead of 325kw at 0-20% SoC and fully preconditioned, you have a problem
Take it in, don’t wait

 

[noobla3]

If your are experiencing slow perf for L2 or L3 charging, getting 90-100kw instead of 325kw at 0-20% SoC and fully preconditioned, you have a problem
Take it in, don’t wait

I do have a problem at low SOC charging at a V3 cabinet where the truck will ramp to above 250kw for a minute or so and drop to 34kw stays at 34 for a couple minutes and ramp back up. And this repeats until it’s well below 250kw.

I recall people saying that’s the limitation of the V3 charging site when it’s relatively full not able to provide full power.

Is that’s an indicator?

 

[fishtek]

Others would know the ins and outs more than I. However I think the limitation when the site is full (or close to full) is at the older v2 (120kW and 150kW) locations, where you split the power with the other post of the same number, i.e. 1A and 1B share the 150kW.

So on a V3 (250kW) you should receive the full power that the site and your truck can handle. So in an ideal case you would get the 250kW when you have a very low state of charge and your battery is properly warmed up. Then as the state of charge increases you'll see the power start to *gradually* drop down from the 250kW as the truck battery charge level increases.

The bouncing your describing sounds like an issue, however I have had that happen before on a v3 and moving over one stall fixed the issue, so it could be something with your truck but I would bet more likely something with that particular stall.

 

[daveog]

I do have a problem at low SOC charging at a V3 cabinet where the truck will ramp to above 250kw for a minute or so and drop to 34kw stays at 34 for a couple minutes and ramp back up. And this repeats until it’s well below 250kw.

I recall people saying that’s the limitation of the V3 charging site when it’s relatively full not able to provide full power.

Is that’s an indicator?

I have a similar question. ‘25 AWD with less than 3,000 miles. At a super charger rated to 250kw I only get 100 something at best.

 

[noobla3]

I have a similar question. ‘25 AWD with less than 3,000 miles. At a super charger rated to 250kw I only get 100 something at best.

Depends what state of charge your truck is at and whether you’ve pre-conditioned for optimal charging. All EV will have a charge curve.

 

[daveog]

Depends what state of charge your truck is at and whether you’ve pre-conditioned for optimal charging. All EV will have a charge curve.

Copy. So what should I expect at a 250kw V3 charger at 50-60% if I’m preconditioned.

 

[CyberGus]

General charge curve under ideal conditions

 

[daveog]

General charge curve under ideal conditions

Thank you!

 

[CyberGus]

I do have a problem at low SOC charging at a V3 cabinet where the truck will ramp to above 250kw for a minute or so and drop to 34kw stays at 34 for a couple minutes and ramp back up. And this repeats until it’s well below 250kw.

I've had bad SC posts misbehave, and had to move to another stall to get full power. But I've never seen such "bouncing" behavior.

If this is consistent, I'd consider that a problem. There are some stats you can view from Service Mode while charging that may enlighten. For instance, power is reduced when the charge-port temperature is excessive, but I'm not sure if that temp is displayed.

I'd be relived that the BMS is preventing my truck from melting, but it should be able to handle 250kW+ power.

 

[noobla3]

I've had bad SC posts misbehave, and had to move to another stall to get full power. But I've never seen such "bouncing" behavior.

This has happened to me in different SC sites and moving plugs makes no difference.

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