As I mentioned in my 85D First impressions thread my car is limiting itself to 79A on an 80A HPWC setup.
To be clear I'm not talking about the perfectly normal variability in the amperage you see for what current the car is currently receiving (what I'll refer to as instantaneous display). This instantaneous view always bounces around a bit and it's perfectly normal for it to show 79/80A while charging. To repeat, that's not what I'm talking about.
In the charging menu there is a the selector that lets you set the maximum amperage to use. You can set this all the way up to 80A (with dual chargers) when not plugged in. When you plug in the maximum is limited to whatever the pilot current is (i.e. whatever the connector says is available to the car). In my case the car lowers the maximum amps to 79A. It then doesn't let you raise it back to 80A until you unplug. Plug back in and most of the time it lowers back to 79A. This lowering also seems to be sticky, you have to keep raising it to 80A. So far I've only ever seen it stay at 80A once. My S85 never did this.
In the other previously mentioned thread two P85D owners showed up and said they had the same strange behavior.
Andyw2100 made a video of it and shared it with both of us privately and we confirmed that all 3 of us were having this strange behavior. So it's possible this is something specific to D's. I have a service appointment on Monday for this and a couple other minor things on my 85D. But given that there's 3 of us with this behavior and wk057 says the P85 doesn't do the same thing with the same HPWC, I think there is something weird going on here. I'm splitting this out here under the hope that may other people have seen this and I can walk into the service center with more evidence.
Refuses to charge at 80A on my HPWC. The S85 did so just fine. I turn it up to 80A, plug it in and it turns itself right back down to 79A. Really strange because I can't fathom what's helpful about turning it down by 1A. It refuses to let me turn it up from 79A when plugged in like the pilot signal is saying it's plugged into a 79A charger. I figure service can help me by seeing if this is just something that's happening with my HPWC or something to do with the car.
To be clear I'm not talking about the perfectly normal variability in the amperage you see for what current the car is currently receiving (what I'll refer to as instantaneous display). This instantaneous view always bounces around a bit and it's perfectly normal for it to show 79/80A while charging. To repeat, that's not what I'm talking about.
In the charging menu there is a the selector that lets you set the maximum amperage to use. You can set this all the way up to 80A (with dual chargers) when not plugged in. When you plug in the maximum is limited to whatever the pilot current is (i.e. whatever the connector says is available to the car). In my case the car lowers the maximum amps to 79A. It then doesn't let you raise it back to 80A until you unplug. Plug back in and most of the time it lowers back to 79A. This lowering also seems to be sticky, you have to keep raising it to 80A. So far I've only ever seen it stay at 80A once. My S85 never did this.
In the other previously mentioned thread two P85D owners showed up and said they had the same strange behavior.
My P85D does this on both my HPWCs, which are at two different locations. When I posted about it here, inquiring, I was basically told not to worry about it. Apparently the display truncates, and the 79 could actually be 79.9 or 79.8.
My P85D reports 79A max as well sometimes, while the P85 using the same charger will always report 80A. I've been meaning to ask Tesla about this, but keep forgetting. Please let us know how that goes.
Andyw2100 made a video of it and shared it with both of us privately and we confirmed that all 3 of us were having this strange behavior. So it's possible this is something specific to D's. I have a service appointment on Monday for this and a couple other minor things on my 85D. But given that there's 3 of us with this behavior and wk057 says the P85 doesn't do the same thing with the same HPWC, I think there is something weird going on here. I'm splitting this out here under the hope that may other people have seen this and I can walk into the service center with more evidence.