2015 HV Battery won’t charge

[Jsredlineracer]

So a little background on the issue.
my wife went over a puddle the car died and after a while turned back on however the service electric vehicle system and TPMS lights where on however the car was charging and driving fine. I made several attempts at resetting is by removing the positive for 60 seconds 15 minutes and probably an hour with no avail. Now the car won’t start and won’t charge. Will removing the HV disconnect be of any help? Any suggestions on what to do? I can’t take it to the dealer if it won’t start without paying a ridiculous amount to get it towed there.B11A0F37-5904-41A9-AA0E-456E62E99005.jpg80D09946-6A79-4F01-9042-1F6CF4DD75F7.jpg3FD81D39-E6D8-4B6C-9791-A4CFAD0B6D5E.jpg50CDB6A4-6550-49E0-A930-B5AD70107290.jpg

[rkw]

How old is your 12V battery? If it's the original, it may need to be replaced. A lot of errors can start happening when the 12V battery is going out.

[Jsredlineracer]

I unplugged the fuse for HV and waited a few minutes before plugging it back in and was able to get the car to start again. It’s a molar battery so I’m Not sure if it’s original but I checked voltage and it’s at 12.7. If I was to put some jumper cables to the original battery would that fix the issue if it is that or would I have to remove the battery from my other fiat (I have two of them one with a fresh battery because the old one took a dump last week. No lights or warnings it just died) and install it in the one with problems?

thanks for your time

[rkw]

12.7V should be about right for a 12V battery. Are you still getting the same errors?

[Jsredlineracer]

Just the TPMS and the service Electric vehicle system. The red ones went away. bust these two have been on since the puddle incident. Any way to get rid of them?

[rkw]

For the TPMS, look at the tire pressure screen (scroll through the screens with the button on the end of the right stalk). It should give an idea of whether the whole system is down or an individual sensor.

[Jsredlineracer]

Is there a fuse or relay that controls the TPMS? The whole system is down and while troubleshooting an AC problem on my other 500e I realized if I unplug a relay I got the service vehicle electric system but when I reinstalled them and did the reset process it went away

[rkw]

It seems to be fuse F36, but other things on the same fuse you should have noticed.

2015-FIAT-500e-fuses.pdf

[Jsredlineracer]

Are those under the dash? I checked all of those and they were fine. Btw on the other one my compressor is showing no signs of life. Any idea what I could check? I called my local fiat and it’s 150 per hour for diagnostic with no guarantee on how long they will need it

[rkw]

Look into AlfaOBD software for diagnostics. I have not used it myself.