Honda FOURTRAX 2018 Owner's Manual page 40

Indicators & Displays
NOTICE
Continuing to ride with an overheated engine can cause serious
engine damage.
Coolant temperature gauge failure:
If the coolant temperature system has an error, the coolant
temperature gauge (1) will blink and preferentially appear in the
display, and/or high coolant temperature indicator (3) will turn on.
If this occurs, see your dealer as soon as possible.
(3)
(1)
(1) coolant temperature gauge (3) high coolant
temperature indicator
30 Instruments & Controls