To be honest, the service indicator should be reset by the dealer at the time of the PDI checks, prior to collection by the new owner.
I suspect some dealers are either forgetting to reset it, not told to do it, or more likely, don’t even know about it !.
If it was reset at the time of the PDI then it would / should not call for a service to be done until 12 months after that date.
I have a LR facelift which has covered over 3,000 miles, to-date I have not witnessed the service warning

.
I have checked when my service is due in the head unit and it matches the date of the service sticker that has been placed in the inside / top right hand side of the front windscreen.
This has been placed their by the supplying dealer at the time of the PDI check.
This is a visual reminder to myself, when my service is due and MAY suggest the service counter WAS reset correctly by the supplying dealer at the time of the PDI check.
Would this theory then suggest some dealers are not resetting the service indicator, for the reasons I mentioned above ?.
Has it been missed off the check box sheet they should using when they do their checks.
Are some even using one for that matter !.
What do you think ?.