Jeep Grand Cherokee 2013 Owner's Manual page 487

STARTING AND OPERATING 485
NOTE: If shift conditions/interlocks are not met, or a
transfer case motor temperature protection condition exists,
a "For 4x4 Low Slow Below 3 MPH or 5 KPH Put Trans in N
Press 4 Low" message will flash from the Electronic Vehicle
Information Center (EVIC). Refer to "Electronic Vehicle
Information Center (EVIC)" in "Understanding Your Instru-
ment Panel" for further information.
4WD LOW To 4WD HI
With the vehicle at speeds of 0 to 3 mph (0 to 5 km/h), the 5
ignition switch in the ON position or the engine running,
shift the transmission into NEUTRAL, and press the
"4WD LOW" button once on the transfer case switch. The
Transfer Case Switch
"4WD LOW" indicator light in the instrument cluster
will flash and go out when the shift is complete.