According to the 2001 Dodge Ram Sevice Repair Manual:
PROGRAMMABLE ELECTRONIC FEATURES DESCRIPTION

(1) The programmable electronic features that may
be provided on the vehicle are:
² Rolling Power Door Locks
² Horn Chirp (When Doors Locked With Remote Keyless Entry)
² Headlamp Flash (When Doors Locked or Unlocked With Remote Keyless Entry)
² Low Fuel Chime
² Remote Keyless Entry Door Unlock Sequence
² Headlights On Automatically With Wipers
² Turn Signal Chime
² 12V Power Outlet
² Remote Unlock
² Remote Linked To Memory
² Headlamp Delay
² Service Interval
² Easy Exit Seat

(2) Programming any of the above features is to be
performed prior to vehicle delivery to the customer,
depending on customer preference.
NOTE: For all vehicles except Caravan/Town and
Country, the programming must be performed using
the DRB IIIT scan tool. On Caravan/Town and Country
vehicles the features can be programmed using
the DRB IIIT scan tool or by button pushing
sequences. The customer can perform programming,
if desired, by following the instructions outlined
in the owner manual.
OPERATION
NOTE: The programmable features provided on
vehicles need to be explained to the customer at
the time of sale. The customer’s preferences concerning
the features should be noted and programmed
accordingly during predelivery.
NOTE: When using the DRB IIIT scan tool to enable/
disable any programmable electronic features, go to
the main menu item #9 on the DRB IIIT scan tool.
This is “Customer Preferences”. You must choose
“Customer Preferences” on the main menu to program
the desired features.

HEADLAMP FLASH
NOTE: This feature can be enabled with or without
the horn chirp feature.
The headlamp flash function is a feature that can
be enabled or disabled on vehicles equipped with
Remote Keyless Entry (RKE). The headlamps flash
once when the vehicle is locked with the RKE transmitter,
and flash twice when the vehicle is unlocked
with the RKE transmitter.

Horn Chirp - Optional
This feature is part of the Remote Keyless Entry system. When enabled, this feature generates a single horn chirp when locking the doors with Remote Keyless Entry transmitter. This feature is shipped enabled, but if desired the feature can be disabled by following these steps:
1. Place the key in ignition and turn the key to the ON position (do not start the engine)
2. Press and hold the UNLOCK button on the transmitter for four to ten seconds.
3 While the UNLOCK button is pressed, press the LOCK button on the transmitter and then release both buttons.
4. You will hear a single chime when programming is completed.
5. To enable the feature again, follow the above steps.