SSN Fix: DIY Upper HV Pack Heat Exchanger (Cooling Plate) Removal

[Anti_Climax]

Depends on the temp. At 120-something it forces a stop. Below that is a range where it's degraded performance and below that a range where there's no error but it's totally bypassing the cabin evaporator.

[27ace27]

Interesting. I wonder if we have different BECM firmware or something. Mine never forced a complete stop, it just kept limiting performance until the car barely moved.

[Anti_Climax]

How hot did it get though? Was it a yellow warning or a red warning?

[27ace27]

Yellow, then red.

[Anti_Climax]

Had to unplug my charger and the car sat in the PHX sun all day. Can confirm, hybrid battery temp of 122 gave a "stop now" message.

Changed to "severely limited performance" with a red turtle at 121-120F. When it switched the battery indicator (which was up above 99%) showed 0 miles range and began counting up to 95+ miles.

At 118-117F the turtle went yellow and just "limited performance"

At 114-113F the warnings went away but AC was still fully redirected to the battery loop.

At 112-111F, the AC began working in the cabin.

[27ace27]

Good to know!