key Ram 3500 Chassis Cab 2020 Workshop Manual

290STARTING AND OPERATING
Shifting Into N (Neutral)
Use the following procedure to prepare your
vehicle for recreational towing.
1. Bring the vehicle to a complete stop on
level ground, with the engine running.
Firmly apply the parking brake.

2. Shift the transmission to NEUTRAL.
3. Press and hold the brake pedal.
4. Shift the transfer case into N (Neutral):
With manual shift transfer case, shift the transfer case lever into N (Neutral).
With electronic shift transfer case, push and hold the transfer case N (Neutral)
button. Some models have a small,
recessed "N" button (at the center of the
transfer case switches) that must be
pressed using a ballpoint pen or similar
object. Other models have a rectangular
N (Neutral) switch, below the rotary
transfer case control knob. The N
(Neutral) indicator light will blink while
the shift is in progress. The light will stop blinking (stay on solid) when the shift to N
(Neutral) is complete. After the shift is
completed and the N (Neutral) light stays
on, release the N (Neutral) button.
5. Release the parking brake.
6. Shift the transmission into REVERSE.
7. Release the brake pedal for five seconds and ensure that there is no vehicle move-
ment.
8. Repeat steps six and seven with automatic transmission in DRIVE.
9. Shift the transmission to NEUTRAL. Firmly apply the parking brake. Turn off the engine.
For vehicles with Keyless Enter-N-Go, push
and hold the ENGINE START/STOP button
until the engine shuts off.
10. Shift the transmission into PARK.
11. Place the ignition in the OFF mode, and remove the key fob.
12. Attach the vehicle to the tow vehicle using a suitable tow bar.
13. Release the parking brake.
Do not disconnect the rear driveshaft
because fluid will leak from the transfer
case, causing damage to internal parts.
Do not use a bumper-mounted clamp-on
tow bar on your vehicle. The bumper face
bar will be damaged.
WARNING!
You or others could be injured or killed if you
leave the vehicle unattended with the transfer
case in the NEUTRAL (N) position without first
fully engaging the parking brake. The transfer
case NEUTRAL (N) position disengages both
the front and rear driveshafts from the
powertrain, and will allow the vehicle to roll,
even if the automatic transmission is in PARK
(or manual transmission is in gear). The
parking brake should always be applied when
the driver is not in the vehicle.
CAUTION! (Continued)CAUTION!
It is necessary to follow these steps to be
certain that the transfer case is fully in
NEUTRAL (N) before recreational towing to
prevent damage to internal parts.

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IN CASE OF EMERGENCY309
F3630 Amp Pink –Electric Back Light – If Equipped
F37 30 Amp Pink –Fuel Heater #2, Aux Relay 2 – If Equipped (HD Only)
SSV (DS 1500 Only)
F38 30 Amp Pink –Integrated Trailer Brake Module – If Equipped (HD Only)
Power Inverter 115 Volt AC – If Equipped (DS 1500 Only)
F39 20 Amp Blue –Power Outlet – SSV Only
F40 –10 Amp Red Ventilated Seats – If Equipped (HD Only)
F41 –10 Amp Red Active Grille Shutter / Active Air Dam – If Equipped
F42 –20 Amp Yellow Horn
F43 –15 Amp Blue Heated Steering Wheel – If Equipped (HD Only)
F44 –10 Amp Red Diagnostic Port
F46 –10 Amp RedUpfitters Relay Coil – If Equipped (HD Only)
Spare (DS 1500 Only)
F49 –10 Amp RedInstrument Panel Cluster / HVAC (DS 1500 Only)
Instrument Cluster / MOD CSG (HD Only)
F50 –20 Amp Yellow Air Suspension Control Module – If Equipped
F51 –10 Amp RedIgnition Node Module / Keyless Ignition Node Module,
Radio Frequency Hub Module / Electric Steering Column
Lock - If Equipped
F52 –5 Amp Tan Battery Sensor
F53 –20 Amp Yellow Trailer Tow – Left Turn/Stop Lights - If Equipped
F54 –20 Amp Yellow Non Memory Adjustable Pedals - If Equipped
CavityCartridge Fuse Micro Fuse Description
6

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326IN CASE OF EMERGENCY
TOWING A DISABLED VEHICLE
This section describes procedures for towing a disabled vehicle using a commercial towing service. If the transmission and drivetrain are operable,
disabled vehicles may also be towed as described under “Recreational Towing” in the “Starting And Operating” section.
Proper towing or lifting equipment is required to
prevent damage to your vehicle. Use only tow
bars and other equipment designed for this
purpose, following equipment manufacturer’s
instructions. Use of safety chains is mandatory.
Attach a tow bar or other towing device to main
structural members of the vehicle, not to
bumpers or associated brackets. State and
local laws regarding vehicles under tow must be
observed. If you must use the accessories (wipers,
defrosters, etc.) while being towed, the ignition
must be in the ON/RUN mode, not the ACC
mode.
If the key fob is unavailable or the vehicle's
battery is discharged, refer to “Manual Park
Release” or “Gear Selector Override” in this
section for instructions on shifting the auto
-
matic transmission out of PARK for towing.
Towing Condition Wheels OFF The
Ground 2WD Models
4WD Models
Flat Tow NONE If transmission is operable:

• Transmission in NEUTRAL
• 30 mph (48 km/h) max speed
• 15 miles (24 km) max distance (6–speed
transmission)
• 30 miles (48 km) max distance (8–speed
transmission) See instructions in “Recreational Towing” under
“Starting And Operating”

• Auto Transmission in PARK
• Transfer Case in NEUTRAL
• Tow in forward direction
Wheel Lift Or Dolly Tow Front
NOT ALLOWED
Rear OK NOT ALLOWED

Flatbed ALL
BEST METHOD BEST METHOD
CAUTION!
Do not use sling type equipment when
towing. Vehicle damage may occur.
When securing the vehicle to a flat bed
truck, do not attach to front or rear suspen-
sion components. Damage to your vehicle
may result from improper towing.

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SERVICING AND MAINTENANCE359
Intervention Regeneration Strategy —
Message Process Flow
The Cummins diesel engine meets all Environ -
mental Protection Agency (EPA) Heavy Duty
Diesel Engine Emissions Standards, resulting in
one of the lowest emitting diesel engines ever
produced.
To achieve these emissions standards, your
vehicle is equipped with a state-of-the-art
engine and exhaust system. The engine and
exhaust after-treatment system work together
to achieve the EPA Heavy Duty Diesel Engine
Emissions Standards. These systems are seam -
lessly integrated into your vehicle and managed
by the Cummins Powertrain Control Module
(PCM). The PCM manages engine combustion
to allow the exhaust system’s catalyst to trap
and burn Particulate Matter (PM) pollutants,
with no input or interaction on your part.
If the engine is allowed to idle or the truck is
driven on low engine speed drive cycles for
more than two hours, the system will automati -
cally enter an emissions operating mode that
will increase the engine idle speed to 900 RPM
(1,050 RPM for Chassis Cab). While in this
mode, which is designed to help maintain the
Diesel Particulate Filter, the engine idle speed will return to normal when the brake pedal is
applied. A small change in engine tone or a
slight change in engine performance while
accelerating may also be noticeable at speeds
below 20 mph (32 kmh). This operating mode
may last for up to an hour of idle time, or around
20 minutes of driving time.
Additionally, your vehicle has the ability to alert
you to additional maintenance required on your
truck or engine.
Refer to “Instrument Cluster Display” in
“Getting To Know Your Instrument Panel” for
further information.
Diesel Exhaust Fluid
Diesel Exhaust Fluid (DEF) sometimes known
simply by the name of its active component,
UREA—is a key component of Selective Catalytic
Reduction (SCR) systems, which help diesel
vehicles meet stringent emission regulations.
DEF is a liquid reducing agent that reacts with
engine exhaust in the presence of a catalyst to
convert smog-forming nitrogen oxides (NOx)
into harmless nitrogen and water vapor.
Refer to “Fluids And Lubricants” in “Technical
Specification” for further information.
You can receive assistance in locating DEF in
the United States by calling 866-RAM-INFO
(866-726-4636). In Canada call
1–800–465–2001 (English) or
1–800–387–9983 (French)
WARNING!
A hot exhaust system can start a fire if you
park over materials that can burn. Such
materials might be grass or leaves coming
into contact with your exhaust system. Do not
park or operate your vehicle in areas where
your exhaust system can contact anything
that can burn.7

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MULTIMEDIA421
Lights
After pressing the Lights button on the touchscreen, the following settings will be available:
Setting Name Selectable Options
Headlight Off Delay0 sec30 sec
60 sec 90 sec
Headlight Illumination On Approach 0 sec30 sec
60 sec 90 sec
NOTE:
When the “Headlight Illumination On Approach” feature is selected, it allows the adjustment of the amount of time the headlights remain on when
the doors are unlocked with the key fob. Headlights With Wipers — If Equipped OnOff
Auto Dim High Beams — If Equipped OnOff
Daytime Running Lights OnOff
NOTE:
When the “Daytime Running Lights” feature is selected, the daytime running lights can be turned On or Off. This feature is only allowed by law in the
country of the vehicle purchase.
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422MULTIMEDIA
Flash Lights With Lock OnOff
NOTE:
When the “Flash Lights With Lock” feature is selected, the exterior lights flash when the doors are locked or unlocked with the key fob. This feature
may be selected with or without the “Sound Horn With Lock” feature selected. Steering Directed Lights OnOff
NOTE:
When the “Steering Directed Lights” feature is selected, the headlights turn with the direction of the steering wheel. Rear Cargo Guidance Lights — If Equipped OnOff
NOTE:
When the “Rear Cargo Guidance Lights” feature is selected, the lights in the cargo and bed of the truck will come on either when the headlight switch
is pressed, or the button on the back bed of the truck is pressed.
Setting Name Selectable Options

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MULTIMEDIA423
Doors & Locks
After pressing the Doors & Locks button on the touchscreen, the following settings will be available:
Setting Name Selectable Options
Auto Door Locks — If EquippedOn Off
NOTE:
When the “Auto Door Locks” feature is selected, all doors lock automatically when the vehicle reaches a speed of 15 mph (24 km/h). Auto Unlock On Exit On Off
NOTE:
When the “Auto Unlock On Exit” feature is selected, all doors unlock when the vehicle is stopped, the transmission is in the PARK or NEUTRAL position
and the driver's door is opened. Sound Horn With Lock Off1st Press 2nd Press
Remote Door Unlock All Driver
NOTE:
The “Remote Door Unlock” feature allows you to program your remote door locks to open “All doors” or only the “Driver door” with the first push of
the key fob or grabbing the Passive Entry door handle. Sound Horn With Remote Start On Off
NOTE:
When the “Sound Horn With Remote Start” feature is selected, the horn sounds when the remote start is activated. Memory Linked To Fob — If Equipped On
Off
NOTE:
The “Memory Linked To Fob” feature provides automatic driver seat positioning to enhance driver mobility when entering and exiting the vehicle.
The seat returns to the memorized seat location if “Memory Linked To Fob” is set to “On” when the key fob is used to unlock the door.
9

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424MULTIMEDIA
Power Side Steps — If Equipped
After pressing the Power Side Steps button on the touchscreen, the following settings will be available:
Auto-On Comfort Systems — If Equipped
After pressing the Auto-On Comfort button on the touchscreen, the following settings will be available:Passive Entry — If Equipped
On Off
NOTE:
The “Passive Entry” feature allows you to lock and unlock the vehicle’s door(s) without having to push the key fob lock or unlock buttons. It automat -
ically unlocks the doors when the outside door handle is grabbed.
Flash Lights With Lock On Off
NOTE:
When the “Flash Lights With Lock” feature is selected, the exterior lights flash when the doors are locked or unlocked with the key fob. This feature
may be selected with or without the “Sound Horn With Lock” feature selected.
Setting Name Selectable Options
Setting NameSelectable Options
Power Side StepsAutomaticStow
Setting Name Selectable Options
Auto-On Driver Heated/Ventilated
Seat & Steering Wheel With Vehicle Start — If Equipped Off
Remote Start Only All Starts
NOTE:
When the “Auto-On Driver Heated/Ventilated Seat & Steering Wheel With Vehicle Start” feature is selected the driver's heated seat and heated
steering wheel will automatically turn on when temperatures are below 40°F (4.4°C). When temperatures are above 80°F (26.7°C), the driver vented
seat will turn on.

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430MULTIMEDIA
Uconnect 4/4C/4C NAV Settings

Uconnect 4/4C/4C NAV With 8.4-inch Display Buttons
On The Touchscreen And Buttons On The Faceplate
Press the Apps button on the touchscreen then
press the Settings button on the touchscreen to
display the settings menu screen. In this mode
the Uconnect system allows you to access
programmable features that may be equipped
such as Language, Display, Units, Voice, Clock,
Camera, Safety & Driving Assistance, Mirrors &
Wipers, Lights, Doors & Locks, Power Side
Steps (if equipped), Seats & Comfort (if
equipped), Key Off Options, Air Suspension (if
equipped), Trailer, Audio, Phone/Bluetooth®
Settings, SiriusXM® Setup (if equipped), Reset,
Clear Personal Data, and System Information (if
equipped).
Press the Apps button on the touchscreen then
press the Settings button on the touchscreen to
display the settings menu screen. In this mode
the Uconnect system allows you to access
programmable features that may be equipped
such as Language, Display, Units, Voice, Clock,
Camera, Safety & Driving Assistance, Mirrors &
Wipers, Lights, Doors & Locks, Power Side
Steps (if equipped), Seats & Comfort (if
equipped), Key Off Options, Air Suspension (if
equipped), Trailer, Audio, Phone/Bluetooth®
Settings, Reset, Clear Personal Data, and
System Information (if equipped). NOTE:
Only one category may be selected at a time.
When making a selection, press the button on
the touchscreen to enter the desired mode.
Once in the desired mode, press and release
the preferred setting until a check-mark
appears next to the setting, showing that setting
has been selected. Once the setting is
complete, press the Back Arrow button on the
touchscreen to return to the previous menu or
press the X button on the touchscreen to close
out of the settings screen. Pressing the Up or
Down Arrow buttons on the touchscreen on the
right side of the screen will allow you to toggle
up or down through the list of available settings.
NOTE:
All settings should be changed with the ignition
in the ON/RUN position.
1 — Uconnect Buttons On The Touchscreen
2 — Uconnect Buttons On The Faceplate

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MULTIMEDIA437
Lights
After pressing the Lights button on the touchscreen, the following settings will be available:
Setting Name Selectable Options
Headlight Off Delay–+
NOTE:
When the “Headlight Off Delay” feature is selected, the driver can choose to have the headlights remain on for 0, 30, 60, or 90 seconds when exiting
the vehicle. Headlight Illumination On Approach –+
NOTE:
When the “Headlight Illumination On Approach” feature is selected, the headlights will activate and remain on for 0, 30, 60, or 90 seconds when the
doors are unlocked with the key fob. Headlights With Wipers — If Equipped OnOff
NOTE:
When the “Headlights With Wipers” feature is selected, and the headlight switch is in the AUTO position, the headlights turn on approximately 10
seconds after the wipers are turned on. The headlights also turn off when the wipers are turned off if they were turned on by this feature. Auto Dim High Beams — If Equipped OnOff
NOTE:
When the “Auto Dim High Beams” feature is selected, the high beam headlights deactivate automatically under certain conditions. Daytime Running Lights OnOff
NOTE:
When the “Daytime Running Lights” feature is selected, the daytime running lights can be turned On or Off. This feature is only available if allowed by
law in the country of the vehicle purchase.
9

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