I wish I could help with the major part of your issue.
The ability to charge past 84% came in a BMS update, so I'm guessing somewhere in the process this occurred. Maybe when they replaced your OBC? Regardless, that would explain that behavior.

Weird question, but - how good is your car's range?
Curious if this error light has something to do either with your battery pack, or a battery cell in the pack.

Just a thought I had when reading this.

..... since getting the BMS updated. I have the 30kWh battery (10th character of VIN is "J", build date Oct 2017 - i.e. 2018 model as I understand it). My dealer says there are no outstanding updates. Could my car have the BMS update from new? Unfortunately I don't have an answer for that...

Why are we talking about 12v batteries in a thread about the trunk shelf?

Sorry, but if no one else will say it then I will.

I don't have actual numbers to prove or disprove what I'm experience, but in my experience since having my BMS updated: - Fast charging no longer has the 84% limitation. - Fast charging is much slower once you're at ~70%. - The SoH update/calibration updates differently vs before. - It now has a una...

Yikes! There's a lot I'd like to say, but frankly I think you just want a solution rather than hindsight. TLDR: Stop spending money at that dealership! Get yourself an OBD2 reader, an Android device and SoulSpy. Escalate! Good Luck! First: Stop spending money at that dealership! While all those serv...

I'm not sure exactly what you're asking..

Are you looking to get a new vehicle and are asking which one on the list is best, or are you just buying the battery and somehow installing it in your existing car?

Wallbox Quasar If you Google that you will find the product I was talking about in my previous post. As of writing this, there doesn't seem to be any further update or purchase option available. I just remembered that a lot of YouTube channels I watch covered it at the time and I was quite impressed...

IIRC - You're limited to around 1kW from the 12v battery. Surge might be a bit higher, but beyond that it's too demanding. A possible good source of information would be from the Prius forums as this is something I've looked at doing myself with my Prius at the time. Now for the OP question: in Nort...

Yeah, this was a known issue awhile back but they're finally getting around to "fixing" it. I had the work done last week, so far the only thing I've noticed is that the car now applies the emergency brake every time you shift into Park. The only reason why this new behavior bothers me is ...