Honda FourTrax Foreman TRX500FE2 2018 Owner's Manual page 51

To select the front differential lock mode:
When the 4WD mode is engaged, reduce the speed of your ATV to
below 16 km/h (10 mph) and slide the differential lock switch (1)
over the 4WD switch. The differential lock indicator (2) will flash fast
and the front differential locking process begins. When the locking
is complete, the differential lock indicator stays on.
(1) differential lock switch
If the speed of your ATV is above 16 km/h (10 mph), the locking
process will be interrupted and the differential lock indicator will
slowly flash.
If the differential lock indicator does not stay on when the front
differential lock mode is selected, steer the handlebar either to the
left or right all the way while your ATV is stopped. If the differential
lock indicator is still flashing, move your ATV slowly while steering
the handlebar all the way to right or left.
Controls & Features
4WD mode
(1)
(2)
off
front differential lock mode
(in the locking
process)
fast
flashing
(speed above 16 km/h
(10 mph). Locking
process interrupted)
slow
flashing
(2) differential lock indicator
Instruments & Controls
(1)
(completed
locking)
(2)
(2)
solid light
(2)
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