smorgasbord
Active Member
Good chance that when they replaced the PEM they didn't properly re-attach the blower housing that keeps it cool. It attaches under the driver's side of the PEM. You may be able to see the edge of it between the PEM and ESS. I had that happen to mine, and I was able to wiggle and wedge it into place well enough from above to let me drive the car to the SC for them to attach it properly. That was one disaster of an "annual maintenance" visit.
Be careful, though. The daily top-off charging can overtemp the PEM, too.
That's probably not my issue, as the PEM cools properly when not being pushed.
Essentially, I live at an elevation of 2250'. So, driving up the mountain to get home has always put a load on my car, even though the speeds are under 40 mph. That said, I never ever got to the point where the PEM was overheated that "Power Limit" came on, even when temps were over 100º F. Now, it happens with temps in the mid 80's.
I hate to say it, but I suspect that the PEM itself isn't up to snuff. Whether that's a design defect or manufacturing I obviously can't say. But, my car goes into service again on Monday. My guess is they'll come back with "works fine for us" and give me my car back. And now that it's many weeks later, the temps may not be hot enough to make this happen, even if they take some of the mountain roads.
I'm really regretting doing the upgrade right now. My car was just fine. I just wanted more range. Sigh.