RAM 1500 2019, User Manual

Page: 164 / 340

CAUTION!
• Do not lock the rear axle on hard sur-
faced roads. The ability to steer the
vehicle is reduced and damage to the
drivetrain may occur when the axle is
locked on hard surfaced roads.
• Do not try to lock the rear axle if the
vehicle is stuck and the tires are spin-
ning. You can damage drivetrain compo-
CAUTION!
nents. Lock the rear axle before attempt-
ing situations or navigating terrain,
which could possibly cause the vehicle
to become stuck.
The locking rear axle is controlled by the
AXLE LOCKER button.
Under normal driving conditions, the rear
axle should be unlocked.
During the command to lock the rear axle, the
indicator light will flash until the axle is
locked. After the lock command has been
successfully executed, the light will remain
on solid.
Operating in 4WD LOW the locker can be
engaged up to 40 mph (64 km/h) and will
remain engaged throughout the 4WD LOW
speed range.
Operating the locker in 2WD, 4WD AUTO,
and 4WD LOCK/HIGH the locker can be en-
gaged up to 20 mph (32 km/h). While driving
with the locker engaged, if speed exceeds
25 mph (40 km/h), the locker will automati-
cally disengage, but will automatically reen-
gage at 20 mph (32 km/h).
NOTE:
Left to right wheel speed difference may be
necessary to allow the rear axle to fully lock.
If the indicator light is flashing after selecting
the rear axle lock mode, drive the vehicle in a
turn or on loose gravel to expedite the locking
action.
The axle locker could become torque locked
due to side to side loads on the rear axle.
Driving slowly while turning the steering
wheel from a left hand turn to a right hand
turn or driving in REVERSE for a short dis-
tance may be required to release the torque
lock and unlock the axles.
To unlock the rear axle; push the AXLE LOCK
button. The AXLE LOCK indicator light will go
out when the rear axle is unlocked.
Axle Lock Button
ST
ARTING
AND
OPERA
TING
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