Hi Tesla Mortor Club Forum,
I have experienced a similar issue, that I'd like you help on:
My Tesla Model S 2014 has been working just fine for the last couple of years with absolutely no charging issues. I have been charging with 15/15A with no problems for years at home - and also from time to time on the road on other chargers.
I have sold the car to a new owner mid July, as I want a new Tesla - the new owner is now experiencing similar challenges to this post and have turned to me for help, as this is his first Tesla.
On the day I did hand over, I did a reset from the main screen to wipe all personal information and also give the new owner a great experience and set it up with him. It was on SW Version: 2019.20.4.2. when he took over the car.
He now reports back to me after a week of take over, that from time to time, he experiences "unable to charge" error message. The charger automatically lower to 10A, the charging continues with no issues. (see picture)
When he changes at home (at 13/13A) he experiences no problems what so ever.
When he spoke to Tesla services initially, they immediately suggested that the charging-unit was defect and needed replacing - since the car is out of the first warranty we don't want to jump to expensive conclusions ;(
Any good advice on what we should try out? (Or how we can validate root cause?)
Thanks in advance!
/Peter