Acura 2014 TL Owner's Manual page 209

In the HI setting, the heater turns off
when the seat gets warm, and turns
back on after the seat's temperature
drops.
In the LO setting, the heater runs
continuously. It does not cycle with
temperature changes.
Follow these precautions whenever
you use the seat heaters:
Do not use the seat heater in the
HI setting for an extended period,
because it draws large amounts of
current from the battery.
If the engine is left idling for an
extended period, do not use the
seat heaters even on the LO
setting. It can weaken the battery,
causing hard starting.
Seat Heaters
Heat induced burns are
possible when using seat
heaters.
Persons with a diminished
ability to sense temperature
(e.g., persons with diabetes,
lower-limb nerve damage, or
paralysis) or with sensitive skin
should not use seat heaters.
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