Dodge 2005 Ram Pickup 3500 - Manual (Page 12)

The
ЉSecurity LightЉ, located in the instrument cluster,
will illuminate for about 2 seconds when the ignition
switch is first turned to the ON position. If the vehicle
electronics do not receive a valid signal from the ignition
key, the
ЉSecurity LightЉ will flash continuously to signal
that the vehicle has been immobilized. If the ЉSecurity
Light
Љ remains on during vehicle operation, it indicates a
fault in the system electronics. If this option was ordered,
all of the keys provided with your new vehicle have been
programmed to the vehicle electronics.
Replacement Keys
NOTE: Only keys that have been programmed to the
vehicle electronics can be used to start the vehicle. Once
a Sentry Key has been programmed to a vehicle, it cannot
be programmed to any other vehicle.
At the time of purchase, the original owner is provided
with a four digit PIN. This number is required for dealer
replacement of keys. Duplication of keys may be per-
formed at an authorized dealer or by using the Customer
Key Programming procedure. This procedure consists of
programming a blank key to the vehicle electronics. A
blank key is one which has never been programmed and
needs to be cut.
NOTE: When having the Sentry Key System serviced,
bring all vehicle keys to the dealer.
12 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE