Persistent problem when I plug the standard 110V. Charging connector into the IPace. It stays "initializing" and doesn't charge. Took it to the dealership 2 days ago and they updated the software and charged the car for me but I am not able to charge it on my own charger.
I had the same problem. Do you have precondition schedule? If so, delete it. Don't just disable it, delete it.
What I found merely by chance is quirk. It sees the precondition schedule as a departure time and if there is not enough time to fully charge the vehicle before departure, it wants you to hook the charger up to a source that can fully charge the vehicle before the departure time. If you "completely" "remove" the precondition schedule it assumes you will have it plugged in long enough to fully charge the vehicle. This is why at the dealer where there is probably a larger enough charger to charge the vehicle you don't have the issue. Yes I believe the same would occur if even on the larger charger there was not enough time to fully charge the vehicle with a precondition schedule in place before the departure time.
I found the issue as I charge at work on a smaller 110v supply and at home I have a 240v 40a JuiceBox charger and by fluke, while I was at work trying to troubleshoot the issue I got a popup on my iPhone that stated something to the fact not enough power to fully charge the vehicle before departure time plug in to a larger charger or change the State Of Charge. What I seen on the JLR supplied charger was the blue charging light coming on, flashing for a moment, then shutting off. It kept cycling on and off like this forever. I think the vehicle is looking for a larger supply, not finding it, it shuts off, waits a few minutes then looks again, hence the perpetual "preparing to charge".
I bet you are experiencing the same issue and if you delete the precondition schedule your trouble will go away.
Don't expect the dealer to find, fix the problem or expect JLR to resolve the issue any time soon if at all.
Hope it helps.
PS, I believe the whole J1772 standard is flawed but that is an entirely different subject