I have the Juicebox set to TOU start primary charge at 12am, I have the iPace set to pre-condition from 7am Mon-Fri. I set the pre-condition on the vehicle infotainment, not on the phone app. Works fine for me.My JB and I-Pace had followed TOU charging flawlessly for weeks until the night after I had an appointment with the Jaguar dealer post-purchase concierge to go over all the features of the car.
The only changes made to settings during that appointment were to update the date format to US from UK and it was the first time I had ever set a pre-condition schedule.
Since then I have had to unlock/lock the car after TOU to get it to charge.
I have only used the JB TOU schedule, I've never set the in-car charge timer.
I have experimented with the car left locked/unlocked, morning departure precondition set/unset.
I have a theory that setting up a precondition schedule once causes the car to go into a deeper sleep state and maybe wont respond to the charger when TOU starts.
For folks that have no problems with their JB's, do you have or have you ever set a precondition schedule?