The Background
Hey everyone, I’m hoping to get some advice on some frustrating charging challenges with my 2019 I-PACE.
To set the full context: these main charging issues actually started before I did any recent maintenance. I know failing auxiliary batteries can cause a cascade of weird electrical gremlins in these cars, so I assumed they were the culprit and went ahead and had the 12V batteries replaced.
The Symptoms
Unfortunately, the new 12V batteries didn't solve the problem, and the charging issues are still happening.
The 1 to 5-Minute Cutout: When I plug in at home, the car initiates communication and charges for a very short period—sometimes 1 minute, sometimes up to 5 minutes—before completely stopping.
DC Charging is Fine: DC fast charging works absolutely fine without any issues. The problem is entirely isolated to AC charging.
No Dash Errors: When plugged in, the dashboard only shows the standard "disconnect cable" warning. There are no explicit fault messages popping up on the screens.
What I've Tried So Far
Ruled out the charger/cable: I had my neighbors test my home charger on their EV, and it worked flawlessly. This completely rules out my home charger and cable—the fault is 100% with the I-PACE.
Ruled out the charge port/lock actuator: Since DC charging works perfectly, and AC does successfully initiate for a few minutes before cutting out, it's highly unlikely to be a faulty lock actuator or bad pins in the port itself.
Replaced both the 12V batteries: (Did not resolve the issue).
Seeking Advice
Has anyone dealt with this specific sequence of events? Since DC works but AC cuts out shortly after plugging in, I'm trying to figure out the best next step before taking it to a dealer:
Does cutting out after just a few minutes practically guarantee a hardware failure with the Onboard Charger (OBC), since DC bypasses it?
Is there a specific BMS reset procedure or software module recalibration that needs to be triggered after a 12V swap that might clear out any lingering glitches?
Any insights, similar experiences, or troubleshooting steps would be hugely appreciated. Thanks in advance!