Amazing site. I have read alot and felt comfortable enough to open the DC-DC inverter because of this thread. Thanks.
Unfortunately I did not see much wrong. Also when I plug in a OBD reader it turns on but says "Failure to connect to car". Is this a different issue or maybe a sympton of the same problem?
Background: In January 2019 (7 years old) the battery really started to lose range and was becoming a problem. We thought it might have something to do with our summers that are routinely over 100 degrees. Then when on the highway it got the "turtle" lights and I slowed down from 60MPH to about 5mph. Dealership took it for a month and then shipped it to California for 4 months. My wife wrote letters that didn't really have any effect until she copied the National Transportation Safety Board and said it was a "safety" issue dying on the highway. Amazingly we had the car with a new 330V battery within 2 weeks! No charge because of warranty.
So, a few years back the car wouldn't charge with the 240V charger. I never worried about it and have since only used the slow 110V (Level 1) wall charger. A couple months ago some nights we found it didn't charge but the next night it would be okay. 2 days ago it stopped charging altogether.
For some reason the OBD reader can't find the car data/codes. The reader says "Failure to connect to the car". I plan to look through all the threads to see if this is a symptom anyone else has experienced and if it could be related to the charging issue.
Today I opened the DC-DC inverter and looked at the capacitors and resistors and everything seemed good to me. All fuses were good. There was some dark marks on the cover that probably came from the wires from the transistor off-gassing from getting too hot but they still looked alright.
So does anyone know how to diagnose this without a code or anything looking obviously bad?
From other threads I plan to :
1)lube the gear selector cable going into the back left rear of the car,
2) put DeOxit on the connectors of the J1772, and
3) check and clean the connections to the OBC.
I will post pictures tomorrow if I'm still stumped. I still have some threads to go through. There's a lot here. Love it!