1.35.2 problem - I've eMailed Tesla customer support

1.35.2 problem - I've eMailed Tesla customer support

I'll let you know what they respond with - based on past history I'm not optimistic

eMail to Tesla provided below so you can all play along at home!!


I’m the proud owner of a 2 power wall system and it’s working great mostly. However recently with 1.35.2 I have noticed a few issues - and I’d like your assistance with them.

- I normally run the system on “self-powered” mode - however when switching from “self-powered” to “backup-only” the system never gets out of “self-powered” - even after 6+ hours I’m still in self powered mode with the battery providing 100% of the house’s demands - I am able to get the system into “backup” only by using the direct web interface and running the setup wizard again. Switching from “backup-only” to “self-powered” seems to work fine and normally cuts over in less than 2 hours, but moving from “self” to “backup” seems to have no effect

- When in “backup only” the power walls stops charging at 98 or 99% and never fully charges to 100% - switching to “self powered” resolves this issue - as I am writing this eMail - I’m in backup only mode, battery is at 99%, solar is providing 100% of my household power, and pushing 3.8 kW extra back to the grid, and the battery is not charging.

- Prior to 1.35.2 being installed on my system when running in self powered mode the power wall would charge to 100% from the solar in the morning and then for the rest of the day remain at 100% with no further charging required until the end of the day. The new software seems to have some draining of the battery even when not being used and it charges multiple times a day from solar - this is new behavior with 1.35.2 - see enclosed picture - Ive circled the after noon charging spikes even though the battery was charged to 100% by noon…

I look forward to working with you on next steps - I’m particularly frustrated with item #1 as when I switch over from self-powered to backup only I’m normally attempting to preserve existing battery% to maximize backup kWh should I need them, and it’s disheartening to then watch the batteries continue to drain for several hours after I’ve requested it to stop powering the household - to date I have never seen the system successfully switch back from self power to backup only - and I’ve always had to login and re run the wizard which resolves the issue as a workaround - but I should not have to do that and it’s disruptive to the system and can only be done while I at the property on my local lan.

mcdonalk | 16 maggio 2019

We also have two powerwalls, but we run only in "self powered" mode, so I can't comment on most of your scenarios. However, I have not seen the anomalous "self powered" behavior that you describe. But, we're running 1.36.0; perhaps that update, when it arrives, will help.

dortor | 16 maggio 2019

ohhhh - 1.36 - not listed on SU site.

dortor | 16 maggio 2019

just ran SW update via web wizard - no update - says I'm on the latest - guess I'll have to wait!

dortor | 21 maggio 2019

no response from Tesla regarding my support request so far.

dortor | 31 maggio 2019

Tesla finally got back to me and "punted" on the issue - they claim since my system is not yet "in service" cause it hasn't yet passed final inspection (we are on our 3rd attempt with the county inspectors) that they can not provide any support until the system is "commissioned"

now I understand this technically true - but it's clearly a software fault and my system is clearly functioning and has been since being installed (I'm allowed to use it cause I have a pre-existing NEM agreement with PG&E for my pre-existing Solar system)…

but apparently Tesla took the easy way out and won't provide me with any customer support until the system is fully "operational" from a bureaucratic perspective, as opposed to a functional perspective.

{sigh} - hopefully the system will pass the next inspection and then I can work with Tesla to demand customer support t- I'm noting the date for warranty purposes - I mean if it's not working and hasn't finished being installed yet then clearly the warranty period has also not started…

Slipshod | 5 giugno 2019


The PTO (Permission to Operate) you have from PG&E applies only to the original equipment installed and inspected. The PTO letter specifically calls out the equipment allowed to be connected to the grid, and you're not allowed to operate the Powerwall until it passes inspection and you are issued a new PTO.

I strongly advise that you turn the system off as you are opening yourself up to legal vulnerability, especially by mentioning this on a public forum.

fenix | 28 giugno 2019

The first step is to setup Wi-Fi access on your Laptop/PC using the Wi-Fi details (SSID and password). Now you should be able to connect to the router, and the router should assign you an IP address.

flashhmob123 | 7 luglio 2019

Thanks a lot for solution!1