The battery health test was done by the dealer (before and after module replacement). Another member here who had FDRS retrieved it for me. FDRS retains history of all tests that were performed, and who did them. I don't remember if PTS also had that info.
Is that something you can request of the dealer?Your HVB SOC modules variation of 6.4% would have most certainly triggered a red charge ring a few years ago. That was the golden era when many 22's and 23's including mine got the red ring on the charge port, and the dash showing Service Vehicle Soon with 57% power. @GoodSam tracked them here.
And now mine has an elevated variation again. I have recorded my HVB module variation since early 2023. When my battery module failed in March '24, my variation ballooned to 4.56%:
And yesterday during my monthly scan, it had gone to 5.2% as shown above However, I got no dash warnings and was able to charge to my regular 85% with no issue. Two days ago, I did get the power limit of 57% (rear wheels only) but that cleared after a restart.
My SOH is 98.5% and I only have 14K miles, so it sits a lot for days at a time.
If FDRS wasn't expensive, I would do a Battery Health Report. It shows bad cells. Here is mine from 2024 showing Module 6 with a bad cell.
I seem to remember there was an OTA that made the bad battery determination less sensitive, for better or worse. Need to research that more.
You could try but they may charge you unless you have a DTC that has that test as a diagnostic.
