X doesn't go to sleep?
I have a drain,my fuel gauge goes all the way up after 5 min X is shut down,locked or unlocked.
Already replaced a battery and it goes to the dealership for diagnostics.
Service adviser said to check on the shifter lever light if it's on all the time or it gets off after some time,mine is off after 15 min or so.Get closer to the X and check it out after 30 min after locking it,obviously without touching the remote.
Also he said that once they had one X that they had to remove all the dash and interior trim to find the draw which was a corroded cable connector.
I pulled some codes out of the Instrument Cluster and it's a Fuel level sensor related one,so I guess it's the cause in my case.
Good luck