2020 Ram 3500 Chassis Cab ECU

GETTING TO KNOW YOUR VEHICLE21
The Remote Start system will wait for the
“Wait To Start” Indicator Light to extinguish
before cranking the engine. This allows time
for the intake heater to preheat the incoming
air, and is normal operation in cold weather.
Refer to “Wait To Start Light,” located in
“Warning Lights And Messages” within
“Getting To Know Your Instrument Panel” for
more information.
How To Use Remote Start
All of the following conditions must be met
before the engine will remote start:
Transmission in PARK
Doors closed
Hood closed
Hazard switch off
Brake switch inactive (brake pedal not
pushed)
Battery at an acceptable charge level
PANIC button not pushed
Fuel meets minimum requirement
Water In Fuel Indicator Light is not illumi -
nated
Wait To Start Light Indicator Light is not illu -
minated
Malfunction Indicator Light is not illuminated
Remote Start Abort Message
The following messages will display in the
instrument cluster display if the vehicle fails to
remote start or exits remote start prematurely:
Remote Start Aborted — Door Open
Remote Start Aborted — Hood Open
Remote Start Aborted — Fuel Low
Remote Start Aborted — System Fault The instrument cluster display message is
stored until the ignition is placed in the ON/RUN
position.
To Enter Remote Start Mode
Push and release the Remote Start button on
the key fob twice, within five seconds. The
parking lights will flash and the horn will chirp
twice (if programmed). In cold ambient
temperature conditions, the diesel vehicle may
delay crank up to 30 seconds for the Intake Air
Heater. Once the vehicle has started, the
engine will run for 15 minutes.
NOTE:
Crank may be delayed up to 75 seconds for
intake air heater operation at high altitudes,
and/or extreme cold.
The park lamps will turn on and remain on
during Remote Start mode.
For security, power window and power
sunroof operation (if equipped) are disabled
when the vehicle is in the Remote Start
mode.
WARNING!
Do not start or run an engine in a closed
garage or confined area. Exhaust gas
contains Carbon Monoxide (CO) which is
odorless and colorless. Carbon Monoxide is
poisonous and can cause serious injury or
death when inhaled.
Keep key fobs away from children. Opera
-
tion of the Remote Start System, windows,
door locks or other controls could cause
serious injury or death.
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22GETTING TO KNOW YOUR VEHICLE
Additional features, such as windshield
wipers, will also not be available while the
vehicle is in the Remote Start mode.
The engine can be started two consecutive
times (two 15 minute cycles) with the key
fob. However, the ignition switch must be
placed in the ON/RUN position before you
can repeat the start sequence for a third
cycle.
To Exit Remote Start Mode Without Driving
The Vehicle
Push and release the Remote Start button one
time or allow the engine to run for the entire
15 minute cycle.
NOTE:
To avoid unintentional shut downs, the system
will disable for two seconds after receiving a
valid Remote Start request.
To Exit Remote Start Mode And Drive The
Vehicle
To exit Remote Start Mode and drive the vehicle
before the end of the 15 minute cycle, push and
release the unlock button on the key fob to
unlock the door and disarm the vehicle security alarm System (if equipped). Then, prior to the
end of the 15 minute cycle, place the ignition in
the ON/RUN position.
NOTE:
The ignition switch must be in the ON/RUN posi
-
tion in order to drive the vehicle.
Remote Start Comfort Systems — If
Equipped
When remote start is activated, the heated
steering wheel, and driver heated seat features
will automatically turn on in cold weather. In
warm weather, the driver vented seat feature
will automatically turn on when the remote start
is activated. These features will stay on through
the duration of remote start or until the ignition
switch is placed in the ON/RUN position.
NOTE:
The Remote Start Comfort System can be acti -
vated and deactivated through the Uconnect
System. Refer to “Uconnect Settings” in “Multi -
media” for further information on Remote Start
Comfort System operation.
SENTRY KEY
The Sentry Key Immobilizer system prevents
unauthorized 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 a key fob, keyless push button
ignition and a Radio Frequency (RF) receiver to
prevent unauthorized vehicle operation. There -
fore, only key fobs that are programmed to the
vehicle can be used to start and operate the
vehicle. The system cannot reprogram a key fob
obtained from another vehicle.
After placing the ignition switch in the ON/RUN
position, the vehicle security light will turn on for
three 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
attempted to start the engine with an invalid key
fob. In the event that a valid key fob is used to
start the engine but there is an issue with the
vehicle electronics, the engine will start and
shut off after two seconds.

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GETTING TO KNOW YOUR VEHICLE23
If the vehicle security 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 serviced as soon as possible by
an authorized dealer.
All of the key fobs provided with your new
vehicle have been programmed to the vehicle
electronics.
Key Programming
Programming key fobs may be performed at an
authorized dealer.
Replacement Keys
NOTE:
Only key fobs that are programmed to the
vehicle electronics can be used to start and
operate the vehicle. Once a key fob is programmed to a vehicle, it cannot be
programmed to any other vehicle.
NOTE:
Duplication of key fobs may be performed at an
authorized dealer. This procedure consists of
programming a blank key fob to the vehicle
electronics. A blank key fob is one that has
never been programmed.
When having the Sentry Key Immobilizer
System serviced, bring all vehicle keys with you
to an authorized dealer.
General Information
The following regulatory statement applies to all
Radio Frequency (RF) devices equipped in this
vehicle:
This device complies with Part 15 of the FCC
Rules and with Innovation, Science and
Economic Development Canada license-exempt
RSS standard(s). Operation is subject to the
following two conditions:

1. This device may not cause harmful interfer
-
ence, and

2. This device must accept any interference received, including interference that may
cause undesired operation.
Le présent appareil est conforme aux CNR
d`Innovation, Science and Economic Develop -
ment applicables aux appareils radio exempts
de licence. L'exploitation est autorisée aux deux
conditions suivantes:

1. l'appareil ne doit pas produire de brouil -
lage, et

2. l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le
brouillage est susceptible d'en comprom -
ettre le fonctionnement.
CAUTION!
The Sentry Key Immobilizer system is not
compatible with some aftermarket remote
starting systems. Use of these systems may
result in vehicle starting problems and loss of
security protection.
CAUTION!
Always remove the key fobs from the
vehicle and lock all doors when leaving the
vehicle unattended.
For vehicles equipped with Keyless
Enter-N-Go — Ignition, always remember to
place the ignition in the OFF position.
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24GETTING TO KNOW YOUR VEHICLE
La operación de este equipo está sujeta a las
siguientes dos condiciones:

1. es posible que este equipo o dispositivo no
cause interferencia perjudicial y

2. este equipo o dispositivo debe aceptar cual -
quier interferencia, incluyendo la que
pueda causar su operación no deseada.
NOTE:
Changes or modifications not expressly
approved by the party responsible for compli -
ance could void the user’s authority to operate
the equipment.
VEHICLE SECURITY ALARM
The vehicle security alarm monitors the vehicle
doors and ignition for unauthorized operation.
When the vehicle security alarm is activated,
interior switches for door locks are disabled.
The system will turn the horn off after 29
seconds, 5 seconds between cycles, up to 8
cycles if the trigger remains active and then the
vehicle security alarm will rearm itself.
To Arm The System
Follow these steps to arm the vehicle security
alarm:

1. Remove the key from the ignition system. Refer to "Starting The Engine" in "Starting
And Operating" for further information.

Make sure the vehicle ignition system is OFF.
2. Perform one of the following methods to lock the vehicle:
Push lock button on the interior power door lock switch with the driver and/or
passenger door open.
Push the lock button on the exterior Passive Entry Door Handle with a valid
key fob available in the same exterior
zone Refer to "Keyless Enter-N-Go —
Passive Entry" in "Doors" in this chapter
for further information.
Push the lock button on the key fob.
3. If any doors are open, close them.
The vehicle security alarm will set when you use
the power door locks, or use the key fob to lock
the doors. After all the doors are locked and closed, the vehicle security light, in the instru
-
ment panel cluster, will flash rapidly for about
16 seconds to indicate that the alarm is being
set. After the alarm is set, the vehicle security
light will flash at a slower rate to indicate that
the system is armed.
To Disarm The System
The vehicle security alarm can be disarmed
using any of the following methods:

1. Push the unlock button on the key fob.

2. Grasp the Passive Entry Unlock Door Handle with a valid key fob within 5 ft (1.5 m) of the
Passive Entry door handle. If equipped,
refer to "Keyless Enter-N-Go — Passive
Entry" in "Doors" in this chapter for further
information.
3. Cycle the ignition out of the OFF position.
The vehicle security alarm is designed to protect
your vehicle. However, you can create condi -
tions where the system will give you a false
alarm. If one of the previously described arming
sequences has occurred, the vehicle security
alarm will arm regardless of whether you are in
the vehicle or not. If you remain in the vehicle
and open a door, the alarm will sound. If this
occurs, disarm the vehicle security alarm.

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GETTING TO KNOW YOUR VEHICLE25
(Continued)
(Continued)
If the vehicle security alarm is armed and the
battery becomes disconnected, the vehicle
security alarm will remain armed when the
battery is reconnected; the exterior lights will
flash, and the horn will sound. If this occurs,
disarm the vehicle security alarm.
Rearming Of The System
If something triggers the alarm, and no action is
taken to disarm it, the vehicle security alarm will
turn the horn off after 29 seconds, 5 seconds
between cycles, up to 8 cycles if the trigger
remains active and then the vehicle security
alarm will rearm itself.
Security System Manual Override
The vehicle security alarm will not arm/disarm if
you lock/unlock the doors using the manual
door lock.
DOORS
Manual Door Locks
Front and rear doors may be locked by moving
the lock knob down. The lock knobs will unlock
when the interior handle is used to open the
doors.
Door Lock Knob

Front doors may be opened with the inside door
handle without lifting the lock knob.
Doors locked before closing will remain locked
when closed.
The emergency key will unlock the driver door
lock on your vehicle.
WARNING!
Do not leave children or animals inside
parked vehicles in hot weather. Interior
heat build-up may cause serious injury or
death.
For personal security and safety in the
event of an collision, lock the vehicle doors
as you drive as well as when you park and
leave the vehicle.
Before exiting a vehicle, always shift the
automatic transmission into PARK, apply
the parking brake, turn the vehicle OFF,
remove the key fobs from vehicle, and lock
all doors. and lock your vehicle.
Never leave children alone in a vehicle, or
with access to an unlocked vehicle. Leaving
children in a vehicle unattended is
dangerous for a number of reasons. A child
or others could be seriously or fatally
injured. Children should be warned not to
touch the parking brake, brake pedal or the
gear selector.
Allowing children to be in a vehicle unat -
tended is dangerous for a number of
reasons. A child or others could be seriously
or fatally injured. Children should be
warned not to touch the parking brake,
brake pedal or the gear selector.
WARNING! (Continued)
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26GETTING TO KNOW YOUR VEHICLE
Power Door Locks — If Equipped
The power door lock switches are on each front
door trim panel. Use these switches to lock or
unlock the doors.
NOTE:
The key fob may not be able to be detected by
the vehicle Keyless Enter-N-Go system if it is
located next to a mobile phone, laptop or other
electronic device; these devices may block the
key fob’s wireless signal and prevent the
Keyless Enter-N-Go system from starting the
vehicle.
Power Door Lock Switches

While in the ACC or ON/RUN positions, if you
push the power door lock switch, and any front
door is open, the power locks will not operate.
This prevents you from accidentally locking your
key fob in the vehicle. Removing the key fob or
closing the door will allow the locks to operate.
A chime will sound if the key fob is in the vehicle
and a door is open, as a reminder to remove the
key fob.
Keyless Enter-N-Go — Passive Entry
The Passive Entry system is an enhancement to
the vehicle’s Remote Keyless Entry system and
a feature of Keyless Enter-N-Go. This feature
allows you to lock and unlock the vehicle’s
door(s) without having to push the key fob lock
or unlock buttons. NOTE:
Passive Entry may be programmed on/off.
Refer to “Uconnect Settings” in “Multimedia”
for further information.
If wearing gloves on your hands, or if it has
been raining/snowing on the Passive Entry
door handle, the unlock sensitivity can be
affected, resulting in a slower response time.
If the vehicle is unlocked by Passive Entry
and no door is opened within 60 seconds, the
vehicle will re-lock and if equipped will arm
the security alarm.
The vehicles security alarm can be armed/
disarmed by pushing the Passive Entry key
fob lock/unlock buttons (if equipped).
The key fob may not be able to be detected by
the vehicle Passive Entry system if it is
located next to a mobile phone, laptop or
other electronic device; these devices may
block the key fob's wireless signal and
prevent the Passive Entry door handle from
locking/unlocking the vehicle.
Do not leave the key fob in or near the
vehicle, or in a location accessible to chil-
dren, and do not leave the ignition of a
vehicle equipped with Keyless Enter-N-Go
in the ACC or ON/RUN mode. A child could
operate power windows, other controls, or
move the vehicle.
WARNING!
(Continued)

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GETTING TO KNOW YOUR VEHICLE37
Rear Head Restraint Adjustment
The rear seats are equipped with adjustable
and removable head restraints. To raise the
head restraint, pull upward on the head
restraint. To lower the head restraint, push the
adjustment button located on the base of the
head restraint and push downward on the head
restraint.
Release/Adjustment Buttons

NOTE:The rear center head restraint (Crew Cab)
has only one adjustment position that is used
to aid in the routing of a tether. Refer to
“Occupant Restraint Systems” in “Safety” for
further information.
Do not reposition the head restraint 180
degrees to the incorrect position in an
attempt to gain additional clearance to the
back of the head.
Rear Head Restraint Removal
To remove the head restraint, push the adjust -
ment button and the release button while
pulling upward on the whole assembly. To rein -
stall the head restraint, put the head restraint
posts into the holes and adjust it to the appro -
priate height.
NOTE:
To remove outboard restraints, the rear seat
bottom must be folded up.WARNING!
All occupants, including the driver, should
not operate a vehicle or sit in a vehicle’s
seat until the head restraints are placed in
their proper positions in order to minimize
the risk of neck injury in the event of a
crash.
Head restraints should never be adjusted
while the vehicle is in motion. Driving a
vehicle with the head restraints improperly
adjusted or removed could cause serious
injury or death in the event of a collision.
1 — Release Button
2 — Adjustment Button
WARNING!
A loose head restraint thrown forward in a
collision or hard stop could cause serious
injury or death to occupants of the vehicle.
Always securely stow removed head
restraints in a location outside the occu -
pant compartment.
ALL the head restraints MUST be rein -
stalled in the vehicle to properly protect the
occupants. Follow the re-installation
instructions above prior to operating the
vehicle or occupying a seat.
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GETTING TO KNOW YOUR VEHICLE67
2. Reach into the opening beneath the center
of the hood and push the safety latch lever
to the left to release it, before raising the
hood.

Safety Latch Location

To Close The Hood

Lower the hood to approximately 12 inches (30 cm)
from the engine compartment and drop it. Make
sure that the hood is completely closed.

GARAGE DOOR OPENER — IF EQUIPPED
HomeLink® replaces up to three hand-held
transmitters that operate devices such as
garage door openers, motorized gates, lighting
or home security systems. The HomeLink® unit
is powered by your vehicle’s 12 Volt battery.
The HomeLink® buttons that are located on the
sun visor designate the three different Home -
Link® channels.

HomeLink® Buttons
NOTE:
HomeLink® is disabled when the Vehicle Secu
-
rity Alarm is active.
WARNING!
Be sure the hood is fully latched before
driving your vehicle. If the hood is not fully
latched, it could open when the vehicle is in
motion and block your vision. Failure to follow
this warning could result in serious injury or
death.
CAUTION!
To prevent possible damage, do not slam the
hood to close it. Use a firm downward push at
the front center of the hood to ensure that
both latches engage.
WARNING!
Your motorized door or gate will open and
close while you are programming the
universal transceiver. Do not program the
transceiver if people, pets or other objects
are in the path of the door or gate. Only use
this transceiver with a garage door opener
that has a “stop and reverse” feature as
required by Federal safety standards. This
includes most garage door opener models
manufactured after 1982. Do not use a
garage door opener without these safety
features.
Vehicle exhaust contains carbon monoxide,
a dangerous gas. Do not run your vehicle in
the garage while programming the trans -
ceiver. Exhaust gas can cause serious
injury or death.
2

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