heater RAM 1500 2022 User Guide

STARTING AND OPERATING149
Do Not Operate The Engine With Low Oil
Pressure
If the Low Oil Pressure Warning Light turns on while
driving, stop the vehicle and shut down the engine
as soon as possible. After the vehicle is safely
stopped, restart the engine and monitor the lamp.
If the lamp is still illuminated, shut the engine off,
contact an authorized dealer, and do not operate
the vehicle until the cause is corrected. If the lamp
is no longer illuminated, the engine can be
operated, but should be taken to an authorized
dealer as soon as possible for further inspection.
NOTE:Do not operate the vehicle until the cause is
corrected. This light does not show how much oil is
in the engine. The engine oil level must be checked
under the hood.
Do Not Operate The Engine With Failed
Parts
All engine failures give some warning before the
parts fail. Some important observations are:
Engine misfiring or vibrating severely
Sudden loss of power
Unusual engine noises
Fuel, oil or coolant leaks
Sudden change, outside the normal operating
range, in the engine operating temperature
Excessive smoke
Oil pressure drop
ENGINE BLOCK HEATER — IF EQUIPPED

Engine Block Heater Cord Location
The engine block heater warms engine coolant and
permits quicker starts in cold weather. Connect the
heater cord to a ground-fault interrupter protected
110–115 Volt AC electrical outlet with a grounded,
three-wire extension cord.
For diesel engines, its use is recommended for
environments that routinely fall below -10°F
(-23°C). It should be used when the vehicle has not
been running for long periods of time and should
be plugged in two hours prior to start. Its use is
required for cold starts with temperatures under
-20°F (-28°C).
To ensure reliable starting at these temperatures,
use of an externally powered electric engine block
heater (available from an authorized dealer) is
recommended.
The engine block heater cord is routed under the
hood on the passenger side of the vehicle next to
the engine coolant reservoir.
CAUTION!
If oil pressure falls to less than normal readings,
shut the engine off immediately. Failure to do so
could result in immediate and severe engine
damage.WARNING!
Remember to disconnect the engine block
heater cord before driving. Damage to the
110-115 Volt electrical cord could cause
electrocution.
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STARTING AND OPERATING209
BULK FUEL STORAGE — DIESEL FUEL
If you store quantities of fuel, good maintenance of
the stored fuel is also essential. Fuel contaminated
with water will promote the growth of “microbes.”
These microbes form “slime” that will clog the fuel
filtration system and lines. Drain condensation
from the supply tank and change the line filter on
a regular basis.
NOTE:When a diesel engine is allowed to run out of fuel,
air is pulled into the fuel system.
If the vehicle will not start Úpage 414.
DIESEL EXHAUST FLUID
Your vehicle is equipped with a Selective Catalytic
Reduction (SCR) system to meet diesel emissions
standards required by the Environmental
Protection Agency. The purpose of the SCR system is to reduce levels
of oxides of nitrogen (NO
x) emitted from engines
that are harmful to our health and the environment
to a near-zero level. A small quantity of Diesel
Exhaust Fluid (DEF) is injected into the exhaust
upstream of a catalyst where, when vaporized,
converts smog-forming NO
x into harmless
nitrogen (N
2) and water vapor (H2O), two natural
components of the air we breathe.
DIESEL EXHAUST FLUID STORAGE
Diesel Exhaust Fluid (DEF) is considered a very
stable product with a long shelf life. If DEF is kept
in temperatures between 10° and 90°F (-12° and
32°C), it will last a minimum of one year.
DEF may freeze at temperatures at or below 12°F
(-11°C). The system has been designed to operate
in this environment.
NOTE:When working with DEF, it is important to know
that:
Any containers or parts that come into contact
with DEF must be DEF compatible (plastic or
stainless steel). Copper, brass, aluminum, iron
or non-stainless steel should be avoided as they
are subject to corrosion by DEF.
If DEF is spilled, it should be wiped up
completely.
ADDING DIESEL EXHAUST FLUID
The Diesel Exhaust Fluid (DEF) gauge (located on
the instrument cluster) will display the level of DEF
remaining in the tank Ú page 110.
NOTE:
Driving conditions (altitude, vehicle speed, load,
etc.) will effect the amount of DEF that is used in
your vehicle.
Outside temperature can affect DEF consump -
tion. In cold conditions, 12°F (-11°C) and
below, the DEF gauge may take longer to
operate as intended. This is a normal function of
the system.
There is an electric heater inside the DEF tank
that automatically works when necessary. If the
DEF supply does freeze, the truck will operate
normally until it thaws.WARNING!
Do not open the high pressure fuel system with
the engine running. Engine operation causes
high fuel pressure. High pressure fuel spray can
cause serious injury or death.
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210STARTING AND OPERATING
(Continued)
Diesel Exhaust Fluid (DEF) Fill Procedure
NOTE:
For the correct fluid type Úpage 473.

1. Remove cap from Diesel Exhaust Fluid (DEF) tank which is located next to the diesel fuel
filler.

DEF Filler Cap And Fuel Fill
2. Insert DEF fill adapter/nozzle into DEF tank
filler neck.NOTE:
The DEF gauge may take up to five seconds
to update after adding a gallon or more of
(DEF) to the DEF tank. If you have a fault
related to the DEF system, the gauge may
not update to the new level. See an autho -
rized dealer for service.
The DEF gauge may also not immediately
update after a refill if the temperature of the
DEF fluid is below 12°F (-11°C). The DEF
line heater will possibly warm up the DEF
fluid and allow the gauge to update after a
period of run time. Under very cold condi -
tions, it is possible that the gauge may not
reflect the new fill level for several drives.
Refilling With Nozzles
You can fill up at any DEF distributor.
Proceed as follows:
Insert the DEF nozzle in the filler, start
refilling and stop refilling at the first shut-off
(the shut-off indicates that the DEF tank is
full). Do not proceed with the refilling, to
prevent spillage of DEF.
Extract the nozzle.
Refilling With Containers
Proceed as follows:
Check the expiration date.
Read the advice for use on the label before
pouring the content of the bottle into the
DEF tank.
If systems which cannot be screwed in
(e.g. tanks) are used for refilling, after the
indication appears on the instrument panel
display Úpage 114 fill the DEF tank with no
more than 2 gallons (8 liters).
If containers which can be screwed to the
filler are used, the reservoir is full when the
DEF level in the container stops pouring out.
Do not proceed further.
1 — Diesel Exhaust Fluid (DEF) Fill Location
2 — Diesel Fuel Fill Location
CAUTION!
To avoid DEF spillage, and possible damage to
the DEF tank from overfilling, do not “top off”
the DEF tank after filling.
DO NOT OVERFILL. DEF will freeze below 12ºF
(-11ºC). The DEF system is designed to work in
temperatures below the DEF freezing point,
however, if the tank is overfilled and freezes,
the system could be damaged.

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352SAFETY
If you do have a collision which deploys the air
bags, any or all of the following may occur:
The air bag material may sometimes cause
abrasions and/or skin reddening to the occu -
pants as the air bags deploy and unfold. The
abrasions are similar to friction rope burns or
those you might get sliding along a carpet or
gymnasium floor. They are not caused by
contact with chemicals. They are not permanent
and normally heal quickly. However, if you
haven’t healed significantly within a few days, or
if you have any blistering, see your doctor imme -
diately.
As the air bags deflate, you may see some
smoke-like particles. The particles are a normal
by-product of the process that generates the
non-toxic gas used for air bag inflation. These
airborne particles may irritate the skin, eyes,
nose, or throat. If you have skin or eye irritation,
rinse the area with cool water. For nose or throat
irritation, move to fresh air. If the irritation
continues, see your doctor. If these particles
settle on your clothing, follow the garment
manufacturer’s instructions for cleaning.
Do not drive your vehicle after the air bags have
deployed. If you are involved in another collision,
the air bags will not be in place to protect you.
NOTE:
Air bag covers may not be obvious in the interior
trim, but they will open during air bag deploy -
ment.
After any collision, the vehicle should be taken
to an authorized dealer immediately.
Enhanced Accident Response System
In the event of an impact, if the communication
network remains intact, and the power remains
intact, depending on the nature of the event, the
Occupant Restraint Controller (ORC) will determine
whether to have the Enhanced Accident Response
System perform the following functions:
Cut off fuel to the engine (if equipped)
Cut off battery power to the electric motor (if
equipped)
Flash hazard lights as long as the battery has
power
Turn on the interior lights, which remain on as
long as the battery has power or for 15 minutes
from the intervention of the Enhanced Accident
Response System
Unlock the power door locks
Your vehicle may also be designed to perform any
of these other functions in response to the
Enhanced Accident Response System:
Turn off the Fuel Filter Heater, Turn off the HVAC
Blower Motor, Close the HVAC Circulation Door
Cut off battery power to the:
Engine
Electric Motor (if equipped)
Electric power steering
Brake booster
Electric park brake
Automatic transmission gear selector
Horn
Front wiper
Headlamp washer pump (if equipped)
WARNING!
Deployed air bags and seat belt pretensioners
cannot protect you in another collision. Have the
air bags, seat belt pretensioners, and the seat
belt retractor assemblies replaced by an
authorized dealer immediately. Also, have the
Occupant Restraint Controller System serviced
as well.

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IN CASE OF EMERGENCY385

Positive (+) Battery Post Location

NOTE:The positive battery post may be covered with a
protective cap. Lift up on the cap to gain access to
the positive battery post. Do not jump off fuses.
Only jump directly off positive post which has a
positive (+) symbol on or around the post.
Follow the below steps to prepare for jump
starting:

1. Shift the automatic transmission into PARK, apply the parking brake and turn the ignition
OFF.

2. Turn off the heater, radio, and all electrical accessories. 3. If using another vehicle to jump start the
battery, park the vehicle within the jumper
cables’ reach, apply the parking brake and
make sure the ignition is OFF.
4. Pull upward and remove the protective cover over the positive (+) battery post.
JUMP STARTING PROCEDURE
Connecting The Jumper Cables

1. Connect the positive
(+) end of the jumper
cable to the positive (+)
post of the discharged
vehicle.

NOTE:Do not jump off fuses. Only jump directly off
positive post.
2. Connect the opposite end of the positive (+)
jumper cable to the positive (+) post of the
booster battery.
WARNING!
Do not allow vehicles to touch each other as this
could establish a ground connection and
personal injury could result.
WARNING!
Take care to avoid the radiator cooling fan
whenever the hood is raised. It can start
anytime the ignition switch is ON. You can be
injured by moving fan blades.
Remove any metal jewelry such as rings,
watch bands and bracelets that could make
an inadvertent electrical contact. You could be
seriously injured.
Batteries contain sulfuric acid that can burn
your skin or eyes and generate hydrogen gas
which is flammable and explosive. Keep open
flames or sparks away from the battery.
WARNING!
Failure to follow this jump starting procedure
could result in personal injury or property
damage due to battery explosion.
CAUTION!
Failure to follow these procedures could result in
damage to the charging system of the booster
vehicle or the discharged vehicle.
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388IN CASE OF EMERGENCY
NOTE:There are steps that you can take to slow down an
impending overheat condition:
If your Air Conditioner (A/C) is on, turn it off. The
A/C system adds heat to the engine cooling
system and turning the A/C off can help remove
this heat.
You can also turn the temperature control to
maximum heat, the mode control to floor and
the blower control to high. This allows the heater
core to act as a supplement to the radiator and
aids in removing heat from the engine cooling
system.
MANUAL PARK RELEASE
In order to move the vehicle in cases where the
transmission will not shift out of PARK (P) (such as
a depleted battery), a Manual Park Release is
available.
Follow these steps to activate the Manual Park
Release:

1. Apply firm pressure to the brake pedal while
seated in the driver’s seat.

2. Apply the parking brake if possible.
3. Using a small screwdriver or similar tool, open the Manual Park Release cover, which is
located to the lower left of the steering column.

Manual Park Release Access Cover

WARNING!
You or others can be badly burned by hot engine
coolant (antifreeze) or steam from your radiator.
If you see or hear steam coming from under the
hood, do not open the hood until the radiator
has had time to cool. Never try to open a cooling
system pressure cap when the radiator or
coolant bottle is hot.
CAUTION!
Driving with a hot cooling system could damage
your vehicle. If the temperature gauge reads
HOT (H), pull over and stop the vehicle. Idle the
vehicle with the air conditioner turned off until
the pointer drops back into the normal range. If
the pointer remains on HOT (H), and you hear
continuous chimes, turn the engine off
immediately and call for service.
WARNING!
Always secure your vehicle by fully applying the
parking brake before activating the Manual Park
Release. In addition, you should be seated in the
driver’s seat with your foot firmly on the brake
pedal when activating the Manual Park Release.
Activating the Manual Park Release will allow
your vehicle to roll away if it is not secured by the
parking brake, or by proper connection to a tow
vehicle. Activating the Manual Park Release on
an unsecured vehicle could lead to serious
injury or death for those in or around the vehicle.

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SERVICING AND MAINTENANCE431
F25 40 Amp Green –MOD CBC 4 Exterior Lights 2
F26 50 Amp Red –ESP Module
F27 30 Amp Pink –Front Wiper
F28 –10 Amp Red PCM / ECM
F29 40 Amp Green –ESP Module
F30 ––Spare
F31 ––Spare
F32 20 Amp Blue –ECM / PCM
F33 30 Amp Pink –Brake Vacuum Pump
F34 ––Spare
F35 –10 Amp RedPCM / ECM / Power Pack Unit (PPU) Motor Generator Unit
(MGU) Wake Up * / EPS / ESP
F36 ––Spare
F37 –5 Amp Tan R / S Output to iPDC
F38 –10 Amp Red DTCM / Active CL TEMP VLV
F39 –15 Amp Blue MOD ATMM *
F40 40 Amp Green –Starter
F41 –10 Amp Red IRCAM Heaters
F42 20 Amp Blue –AUX SWITCH #5 *
F43 –20 Amp Yellow MGU Coolant Pump / ADCM *
Cavity Cartridge Fuse Micro Fuse Description
* If Equipped
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432SERVICING AND MAINTENANCE
F44 –10 Amp Red Trailer Camera *
F45 –10 Amp Red ADCM *
F46 30 Amp Pink –Fuel Heater *
F47 30 Amp Pink –Rear Defroster
F48 ––Spare
F49 30 Amp Pink –Htr Ctrl *
F50 20 Amp Blue –AUX SWITCH #6 *
F51 25 Amp White –FUEL PUMP MOTOR #1 *
F52 ––Spare
F53 –10 Amp Red Supply / Purging Pump *
F54 –15 Amp Blue PCM *
10 Amp Red Vapor Blocking Valve *
F55 –15 Amp Blue RT HID Headlamp
F56 ––Spare
F57 –20 Amp Yellow Horn
F58 25 Amp White –FUEL PUMP MOTOR #2 *
F59 –25 Amp Clear Injectors / IGN Coil / Glow Plug Module *
F60 –20 Amp Yellow ECM / PCM / ACT Short Running Valve / LTR Coolant Pump *
F61 –15 Amp Blue LT HID Headlamp
CavityCartridge Fuse Micro Fuse Description
* If Equipped

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434SERVICING AND MAINTENANCE
Internal Fuse Chart
Cavity Cartridge Fuse Micro Fuse Description
* If Equipped
F01 30 Amp Pink –Trailer Tow Receptacle
F02 ––Spare
F03 –20 Amp Yellow Module Seat Heater Front (Pass)
F04 ––Spare
F05 –20 Amp Yellow Module PPU Cooling Fan *
F06 ––Spare
F07 40 Amp Green –Mod CBC 3 PWR Locks
F08 ––Spare
F09 ––Spare
F10 40 Amp Green –HVAC Blower Motor
F11 –5 Amp TanOutput to Under-hood Power Distribution Center (UPDC) Run
Coil
F12 –25 Amp Clear Mod Audio Amplifier / Active Noise Cancellation
F13 –20 Amp Yellow Mod Seat Heater Front (Driver)
F14 –15 Amp Blue Mod Seat Heater Front (Steering Wheel)
F15 ––Spare
F16 ––Spare
F17 –20 Amp Yellow LT Spot Lamp *
F18 30 Amp Pink –Motor Sunshade Sunroof

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483
Cruise Control Accel/Decel
............................................... 177Cancel....................................................... 177Resume..................................................... 177Cruise Control (Speed Control)... 133, 176, 178Cruise Light......................................... 136, 137Customer Assistance..................................... 477Cybersecurity................................................. 233
D
Daytime Running Lights................................... 55Dealer Service............................................... 408Defroster, Windshield...................... 62, 65, 368Deleting A Phone........................................... 276Diagnostic System, Onboard......................... 138Diesel Exhaust Fluid...................................... 209Adding....................................................... 209Fill Procedure............................................ 210Storage...................................................... 209Diesel Fuel..................................................... 469Diesel Fuel Requirements............................. 469Bulk Storage Of......................................... 209Diesel Fuel System, Re-Priming..................... 414Differential, Limited Slip................................ 173Dimmer Control Switch.................................... 60Disable Vehicle Towing.................................. 390
Disc Drive..................................................... 270Disconnecting............................................... 276DisposalAntifreeze (Engine Coolant)...................... 423Disturb.......................................................... 279Door Ajar Light..................................... 129, 130Door LocksAutomatic.................................................... 32Doors............................................................... 28Draining Fuel/Water Separator Filter............ 412Driver Memory Presets................................. 268Driver’s Seat Back Tilt...................................... 35DrivingThrough Flowing, Rising, Or ShallowStanding Water
.................................... 231Driving Tips................................................... 230Dual Rear Wheels......................................... 466
E
Electric Brake Control System....................... 313Anti-Lock Brake System............................ 312Electronic Roll Mitigation................. 314, 319Electric Parking Brake................................... 150Electric Power Steering................................. 173Electrical Power Outlets................................... 76Electronic Range Select (ERS)...................... 158Electronic Stability Control
(ESC)........................................... 131, 132, 314
Electronic Throttle Control Warning Light...... 129Electronically Shifted Transfer Case.... 160, 162Emergency Braking....................................... 327Emergency Gas Can Refueling...................... 386Emergency, In Case OfFreeing Vehicle When Stuck..................... 389Hazard Warning Flasher........................... 371Jump Starting........................................... 384Emission Control System Maintenance......... 139Engine........................................................... 403Air Cleaner................................................ 410Block Heater............................................. 149Break-In Recommendations..................... 150Compartment............... 403, 404, 405, 406CompartmentIdentification............ 403, 404, 405, 406Coolant (Antifreeze).................................. 473Exhaust Gas Caution................................ 370Fails To Start............................................. 143Flooded, Starting...................................... 143Fuel Requirements.......................... 467, 472Idling......................................................... 147Jump Starting........................................... 384Oil...........................................409, 472, 473Oil Filler Cap............................................. 403Oil Filter.................................................... 409
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