Cadillac 2014 XTS Owner's Manual page 291

The rear compartment fuse block is
on the left side of the trunk behind a
cover.
The vehicle may not be equipped
with all of the fuses, relays, and
features shown.
F01 Not Used
F02 Not Used
F03 Not Used
F04 Leveling
Compressor
F05 Not Used
F06 Not Used
F07 Not Used