2023 RAM 1500 heater

IN CASE OF EMERGENCY325
JUMP STARTING
If your vehicle has a discharged battery, it can be jump
started using a set of jumper cables and a battery in
another vehicle, or by using a portable battery booster
pack. Jump starting can be dangerous if done improperly,
so please follow the procedures in this section carefully.
NOTE:When using a portable battery booster pack, follow the
manufacturer's operating instructions and precautions.
PREPARATIONS FOR JUMP START
The battery in your vehicle is located in the front of the
engine compartment, behind the left headlight assembly.

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.
See the following 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
WARNING!
Do not attempt jump starting if the battery is frozen. It
could rupture or explode and cause personal injury.
CAUTION!
Do not use a portable battery booster pack or any other
booster source with a system voltage greater than
12 Volts or damage to the battery, starter motor,
alternator or electrical system may occur.
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.
7

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328IN CASE OF EMERGENCY
In the event it is observed that the temperature gauge is
moving towards or close to the HOT (H) position, you can
reduce the potential for overheating by taking the
appropriate action.
On the highways — slow down.
 In city traffic — while stopped, place the transmission in
NEUTRAL (N), but do not increase the engine idle speed
while preventing vehicle motion with the brakes.
 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 supple -
ment 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

4. Behind the Manual Park Release access cover is the orange tether strap. Pull the tether strap out as far as
it will go, then release it. The tether and lever will
remain outside of the trim panel and the
transmission should now be in NEUTRAL, allowing the
vehicle to be moved.

Manual Park Release Tether

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.

23_DT_OM_EN_USC_t.book Page 328

SERVICING AND MAINTENANCE359
F4040 Amp Green –Starter
F41 –10 Amp RedIRCAM Heaters
F42 20 Amp Blue –AUX SWITCH #5 *
F43 –20 Amp Yellow MGU Coolant Pump / ADCM *
F44 –10 Amp RedTrailer Camera *
F45 –10 Amp RedADCM *
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 RedSupply / Purging Pump *
F54 –15 Amp Blue
PCM *
10 Amp Red Vapor Blocking Valve *
F55 –15 Amp BlueRT HID Headlamp
F56 ––Spare *
F57 –20 Amp Yellow Horn
F58 25 Amp White –FUEL PUMP MOTOR #2 *
F59 –25 Amp ClearInjectors / IGN Coil / Glow Plug Module *
Cavity Cartridge Fuse Micro Fuse Description
* If Equipped
8

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SERVICING AND MAINTENANCE361
Internal Fuse Chart
CavityCartridge 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 ClearMod Audio Amplifier / Active Noise Cancellation
F13 –20 Amp Yellow Mod Seat Heater Front (Driver)
F14 –15 Amp BlueMod Seat Heater Front (Steering Wheel)
F15 A&B ––Spare
F16 ––Spare
F17 –20 Amp Yellow LT Spot Lamp *
F18 30 Amp Pink –Motor Sunshade Sunroof
F19 ––Spare
F20 –20 Amp Yellow Comfort Rear Seat Module (CRSM) (Heat Rear RT)
F21 ––Spare
8

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405
E
Electric Brake Control System..................................... 263 Anti-Lock Brake System ......................................... 262
Electronic Roll Mitigation .............................. 264
, 268
Electric Parking Brake ................................................. 122
Electric Power Steering................................................ 141
Electrical Power Outlets..................................................66 Electronic Range Select (ERS) .................................... 128
Electronic Stability Control (ESC) ................................ 264
Electronic Throttle Control Warning Light................... 109
Electronically Shifted Transfer Case .................. 130
, 132
Emergency Braking ...................................................... 276
Emergency Gas Can Refueling .................................... 326
Emergency, In Case Of Freeing Vehicle When Stuck .................................. 329
Hazard Warning Flasher ......................................... 314
Jump Starting .......................................................... 325
Emission Control System Maintenance...................... 117
Engine ........................................................................... 337 Air Cleaner ............................................................... 342Block Heater ........................................................... 121
Break-In Recommendations .................................. 122
Compartment ........................................337
, 338, 339
Compartment Identification .................337, 338, 339
Coolant (Antifreeze) ................................................ 396
Exhaust Gas Caution .............................................. 313
Fails To Start ........................................................... 121
Flooded, Starting .................................................... 121
Fuel Requirements ........................................ 393
, 395
Jump Starting .......................................................... 325
Oil ...........................................................341
, 395, 396
Oil Filler Cap ............................................................ 337 Oil Filter ....................................................................342
Oil Selection ................................................... 341
, 395
Oil Synthetic ............................................................. 342
Overheating ............................................................. 327
Starting.....................................................................118
Enhanced Accident Response Feature ............. 297
, 332
Entry System, Illuminated .............................................. 52 Ethanol .......................................................................... 394
Exhaust Gas Cautions ..................................................313
Exhaust System .................................................. 313
, 348
Exterior Lights ........................................................46, 313
FFamily Alerts .................................................................. 248
FAQ ................................................................................ 248
Features ........................................................................ 239
Filters Air Cleaner ............................................................... 342
Air Conditioning ................................................59
, 344
Engine Oil ................................................................. 342
Engine Oil Disposal..................................................342
Flashers Turn Signals ................................................... 115
, 313
Flash-To-Pass .................................................................. 48
Flat Tire Stowage .......................................................... 323
Fluid Capacities ............................................................395
Fluid Leaks ....................................................................313
Fluid Level Checks Brake ........................................................................ 352
Fluid, Brake ...................................................................397
Fog Lights ...............................................................48
, 368
Fold-Flat Seats ................................................................ 30 Forward Collision Warning ........................................... 274
Four Wheel Drive .......................................................... 130
Four-Way Hazard Flasher ............................................. 314
Freeing A Stuck Vehicle ............................................... 329
Front Axle (Differential) ................................................ 353
Fuel................................................................................ 393
Adding ...................................................................... 171Additives .................................................................. 393
Clean Air .................................................................. 393
Ethanol..................................................................... 394Gasoline ................................................................... 393
Light ......................................................................... 111
Materials Added ...................................................... 393
Methanol ................................................................. 394
Octane Rating.................................................393
, 396
Requirements .................................................393, 395
Tank Capacity .......................................................... 395
Fuel Saver Technology ................................................. 141
Fuses ............................................................................. 354
GGarage Door Opener (HomeLink) .................................. 42 Gasoline, Clean Air ....................................................... 393
Gasoline, Reformulated ............................................... 393
Getting Started ............................................................. 238
Glass Cleaning .............................................................. 391
Grocery Bag Retainer ..................................................... 34
Gross Axle Weight Rating ............................................. 173
Gross Combination Weight Rating .............................. 173
Gross Trailer Weight ..................................................... 173
Gross Vehicle Weight Rating ....................................... 173
Guide Body Builders ...............................................................9
GVWR ............................................................................ 172
11

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406 H
Hazard Driving Through Flowing, Rising, OrShallow Standing Water .................................... 189
Hazard Warning Flashers ............................................ 314
Head Restraints .............................................................. 34
Head Rests ...................................................................... 34
Head Up Display (HUD) — If Equipped

b
................. 105
Headlights .................................................................... 366 Cleaning................................................................... 388
Delay ...........................................................................48
High Beam..................................................................47
High Beam/Low Beam Select Switch .......................47
Lights On Reminder ...................................................48
On With Wipers ..........................................................48
Passing ....................................................................... 48
Switch .........................................................................46
Heads Up Display (HUD) ..................................... 104
, 105
Heated Mirrors ................................................................42 Heated Seats...................................................................33
Heated Steering Wheel...................................................28Heater, Engine Block ................................................... 121
High Beam/Low Beam Select (Dimmer) Switch ...........47
Hill Start Assist ............................................................. 266
Hitches Trailer Towing .......................................................... 176
HomeLink (Garage Door Opener) ..................................42
Hood Release ..................................................................74
HUD ...................................................................... 104
, 105
IIgnition............................................................................. 20 Switch......................................................................... 20
Ignition Park Interlock ..................................................125
Illuminated Entry............................................................. 52
Inside Rearview Mirror ..........................................38
, 314
Instrument Cluster ............................................ 93, 95, 98
Descriptions ........................................................ 94, 96
Display........................................................................ 98
Engine Oil Reset ...................................................... 101
Location And Controls ............................................... 98
Menu Items .............................................................. 101
Instrument Cluster Display Audio ........................................................................ 103
Driver Assist ............................................................. 101
Fuel Economy .......................................................... 102
Off-Road ...................................................................102Speedometer ...........................................................101StopStart .................................................................. 103
Stored Messages..................................................... 103Trailer Tow................................................................ 103
Trip............................................................................103
Vehicle Info .............................................................. 102
Instrument Panel Lens Cleaning ................................. 391
Integrated Trailer Brake Control ..................................180
Interior Appearance Care ............................................. 390
Interior Lights .................................................................. 50
Introduction...................................................................237
Inverter Outlet (115V) .................................................... 67
JJack Location ................................................................ 317
Jacking And Tire Changing
b
.................................... 317
Jump Starting ............................................................... 325
KKey Fob ........................................................................... 16 Panic Alarm ............................................................... 17
Programming Additional Key Fobs ........................... 19
Key Fob Battery Replacement ....................................... 17
Key Fob Programming (Remote Keyless Entry)............ 19 Keyless Enter ‘n Go ............................................... 25
, 118
Passive Entry ............................................................. 25
Keys ................................................................................. 16
LLane Change Assist ........................................................ 49 LaneSense .................................................................... 161
Lap/Shoulder Belts ...................................................... 283
Latches ......................................................................... 313 Hood........................................................................... 74
Lead Free Gasoline ...................................................... 393
Leaks, Fluid................................................................... 313
Life Of Tires ................................................................... 379
Light Air Suspension ........................................................ 113
Light Bulbs ...........................................................313
, 365

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