Ram Trucks 2013 3500 - Owner Manual - Manual (Page 26)

NOTE: Inserting the Key Fob with RKE transmitter into
the ignition switch disables the system from responding
to any button presses from that RKE transmitter. Driving
at speeds 5 mph (8 km/h) and above disables the system
from responding to all RKE transmitter buttons for all
RKE transmitters.
Key Fob With Remote Keyless Entry (RKE) Transmitter
(WIN)
24 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE