2008 DODGE RAM 3500 CHASSIS CAB ECU

THINGS TO KNOW BEFORE STARTING YOUR VEHICLE
CONTENTS
mA Word About Your Keys..................12
NIgnition Key Removal...................12
NLocking Doors With The Key..............14
mSentry Key............................15
NReplacement Keys......................16
NCustomer Key Programming..............17
NGeneral Information....................18
mSteering Wheel Lock Ð If Equipped..........18NIf You Wish To Manually Lock The Steering
Wheel..............................18
NTo Release The Steering Wheel Lock.........18
NAutomatic Transmission Ignition Interlock
System..............................19
mSecurity Alarm System Ð If Equipped.........19
NRearming Of The System.................19
NTo Set The Alarm......................19
NTo Disarm The System...................20
mIlluminated Entry System Ð If Equipped.......20
2

SENTRY KEY
The Sentry Key Immobilizer System prevents unautho-
rized vehicle operation by disabling the engine. The
system does not need to be armed or activated. Operation
is automatic, regardless of whether the vehicle is locked
or unlocked.
The system uses ignition keys, which have an embedded
electronic chip (transponder), to prevent unauthorized
vehicle operation. Therefore, only keys that are pro-
grammed to the vehicle can be used to start and operate
the vehicle. The system will shut the engine off in two (2)
seconds if someone uses an invalid key to start the
engine.
NOTE:A key, which has not been programmed, is also
considered an invalid key even if it is cut to fit the
ignition switch lock cylinder for that vehicle.
During normal operation, after turning on the ignition
switch, the Vehicle Security Alarm Indicator Light willturn on for three (3) seconds for a bulb check. If the light
remains on after the bulb check, it indicates that there is
a problem with the electronics. In addition, if the light
begins to flash after the bulb check, it indicates that
someone used an invalid key to start the engine. Either of
these conditions will result in the engine being shut off
after two (2) seconds.
If the Vehicle Security Alarm Indicator Light turns on
during normal vehicle operation (vehicle running for
longer than 10 seconds), it indicates that there is a fault in
the electronics. Should this occur, have the vehicle ser-
viced as soon as possible.
NOTE:
²The Sentry Key Immobilizer System is not compatible
with some after-market remote starting systems. Use
of these systems may result in vehicle starting prob-
lems and loss of security protection.
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 15
2

²Exxon/Mobil Speed Pass,Ÿ additional Sentry Keys, or
any other transponder-equipped components on the
same key chain willnotcause a key-related (transpon-
der) fault unless the additional part isphysically held
against the ignition keybeing used when starting the
vehicle. Cell phones, pagers, or other RF electronics
will not cause interference with this system.
All of the keys provided with your new vehicle have
been programmed to the vehicle electronics.
Replacement Keys
NOTE:Only keys that are programmed to the vehicle
electronics can be used to start and operate the vehicle.
Once a Sentry Key is programmed to a vehicle, it cannot
be programmed to any other vehicle.
CAUTION!
Always remove Sentry Keys from the vehicle and
lock all doors when leaving the vehicle unattended.
At the time of purchase, the original owner is provided
with a four-digit PIN number. Keep the PIN in a secure
location. This number is required for dealer replacement
of keys. Duplication of keys may be performed at an
authorized dealer or by using the Customer Key Pro-
gramming procedure. This procedure consists of pro-
gramming a blank key to the vehicle electronics. A blank
key is one, which has never been programmed.
NOTE: When having the Sentry Key Immobilizer
System serviced, bring all vehicle keys with you to the
dealer.
16 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

Customer Key Programming
If you have two valid sentry keys, you can program new
sentry keys to the system by performing the following
procedure:
1. Cut the additional Sentry Key Transponder blank(s) to
match the ignition switch lock cylinder key code.
2. Insert the first valid key into the ignition switch. Turn
the ignition switch to the ªONº position for at least 3
seconds, but no longer than 15-seconds. Then, turn the
ignition switch to the ªLOCKº position and remove the
first key.
3. Insert the second valid key into the ignition switch.
Turn the ignition switch to the ªONº position within 15
seconds. After ten seconds, a chime will sound. In
addition, the Vehicle Security Alarm Indicator Light will
begin to flash. Turn the ignition switch to the ªLOCKº
position and remove the second key.4. Insert a blank Sentry Key into the ignition switch. Turn
the ignition switch to the ªONº position within 60
seconds. After 10 seconds, a single chime will sound. In
addition, the Vehicle Security Alarm Indicator Light will
stop flashing. To indicate that programming is complete,
the indicator light will turn on again for 3 seconds and
then turn off.
The new Sentry Key is programmed.The Keyless Entry
Transmitter will also be programmed during this pro-
cedure.
Repeat this procedure to program up to 8 keys. If you do
not have a programmed sentry key, contact your dealer
for details.
NOTE:If a programmed key is lost, see your dealer to
have all remaining keys erased from the systems
memory. This will prevent the lost key from starting your
vehicle. The remaining keys must then be repro-
grammed. All vehicle keys must be taken to the dealer at
the time of service to be reprogrammed.
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 17
2

Automatic Transmission Ignition Interlock System
This system prevents the key from being removed unless
the shift lever is in PARK. It also prevents shifting out of
PARK unless the key is in the ON positions, and the
brake pedal is depressed.
SECURITY ALARM SYSTEM Ð IF EQUIPPED
This system monitors the vehicle doors and ignition for
unauthorized operation. When the alarm is activated, the
system provides both audible and visual signals. For the
first 3 minutes the horn will sound and the headlights
and security telltale will flash repeatedly. For an addi-
tional 15 minutes only the headlights and security telltale
will flash. The engine will run only if a valid Sentry Key
is used to start the vehicle. Use of the Sentry Key will
disable the alarm.
Rearming of the System:
The security system will rearm itself after the 15 addi-
tional minutes of headlights and security telltale flashing,
if the system has not been disabled. If the condition
which initiated the alarm is still present, the system will
ignore that condition and monitor the remaining doors
and ignition.
To Set the Alarm:
The alarm will set when you use the power door locks, or
use the Keyless Entry transmitter to lock the doors. After
all the doors are locked and closed the SECURITY light in
the instrument cluster will flash rapidly to signal that the
system is arming. The security light in the instrument
panel cluster will flash rapidly for about 16 seconds to
indicate that the alarm is being set. After the alarm is set,
the security light will flash at a slower rate to indicate
that the system is armed.
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 19
2

NOTE:If the SECURITY light stays on continuously
during vehicle operation, have the system checked by
your dealer.
To Disarm the System:
Use the Keyless Entry transmitter to unlock the door. If
something has triggered the system in your absence, the
horn will sound three times when you unlock the doors
and the security lamp will flash for 30 seconds. Check the
vehicle for tampering.
The Security system will also disarm, if the vehicle is
started with a programmed Sentry Key. If an unpro-
grammed Sentry Key is used to start a vehicle, the engine
will run for 2 seconds and then the security alarm will be
initiated. To exit alarming mode, press the transmitter
Unlock button, or start the vehicle with a programmed
Sentry Key.
The Security Alarm System is designed to protect your
vehicle; however, you can create conditions where the
system will arm unexpectedly. If you remain in thevehicle and lock the doors with the transmitter, the alarm
will sound when you pull the door handle to exit. The
door will be locked but the Security Alarm will not arm.ILLUMINATED ENTRY SYSTEM Ð IF EQUIPPED
The courtesy lights will turn on when you use the keyless
entry transmitter or open the doors. This feature is only
available if you have Remote Keyless Entry.
The lights will fade to off after about 30 seconds or they
will immediately fade to off once the ignition switch is
turned on.
NOTE:
²The front courtesy overhead console, door courtesy
lights do not turn off if the dimmer control is in the
interior lights ON position (extreme top position).
²The illuminated entry system will not operate if the
dimmer control is in the ªdefeatº position (extreme
downward position).
20 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

Using the Panic Alarm
To activate the Panic mode while the ignition is OFF press
and release the PANIC button on the transmitter once.
When the Panic mode is activated, the interior lights will
illuminate, the headlamps and parking lights will flash,
and the horn will sound.
To cancel the Panic mode press and release the PANIC
button on the transmitter a second time, after 5 seconds.
Panic mode will automatically cancel after 3 minutes or if
the vehicle is started and exceeds 15 mph. During the
Panic Mode, the door locks and remote keyless entry
systems will function normally. Panic mode will not
disarm the security system on vehicles so equipped.
General Information
This device complies with part 15 of FCC rules and with
RS-210 of Industry Canada. Operation is subject to the
following conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference that may be
received including interference that may cause undesired
operation.
NOTE:Changes or modifications not expressly ap-
proved by the party responsible for compliance could
void the user's authority to operate the equipment.
If your Keyless Entry Transmitter fails to operate from a
normal distance, check for these two conditions.
1. Weak batteries in transmitter. The expected life of the
batteries is from one to two years.
2. Closeness to a radio transmitter such as a radio station
tower, airport transmitter, and some mobile or CB radios.
24 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

WARNING!
²For personal security and safety in the event of an
accident, lock the vehicle doors when you drive as
well as when you park and leave the vehicle.
²Never leave children alone in a vehicle. Leaving
children in a vehicle unattended is dangerous for a
number of reasons. A child or others could be
seriously or fatally injured. Don't leave the keys in
the ignition. A child could operate power win-
dows, other controls, or move the vehicle.
Power Door Locks Ð If Equipped
A power door lock switch is on each front door trim
panel. Use this switch to lock or unlock the doors.If you press the power door lock switch while the key is
in the ignition, and any front door is open, the power
locks will not operate. This prevents you from acciden-
tally locking your keys in the vehicle. Removing the key
or closing the door will allow the locks to operate. A
chime will sound if the key is in the ignition switch and
a door is open, as a reminder to remove the key.
Power Door Lock Switch Location
28 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE