Hyundai NEXO 2019 Owner's Manual page 524

F F E E A A T T U U R R E E S S O O F F F F C C E E V V ( ( C C O O N N T T . . ) )
Air filter blocked. Check filter
or see owner's manual
This warning message is displayed
when
- the snow may block the air cleaner
filter after driving the vehicle in
heavy snow when the ambient
temperature is below 50°F (10°C)
or
- the exhaust pipe may be frozen
and clogged when the vehicle is
parked for a long time with the
vehicle ON below 50°F (10°C).
In this case, remove the snow from
the inside of the air cleaner filter and
turn on and off the vehicle. If the
warning message is displayed again,
the exhaust pipe may be blocked.
Then, move your vehicle indoors and
leave it inside more than one day to
defrost the exhaust pipe.
If the warning message is displayed
again, have the vehicle checked by
an authorized HYUNDAI dealer.
H20
OFE078009
OFE078010