2022 RAM 1500 brake light

SERVICING AND MAINTENANCE425
(Continued)
To guarantee optimum performance of the system,
keep the surfaces of the charge air cooler,
condenser and radiator clean and free of debris.
Periodically check the hoses leading to and from
the charge air cooler for cracks or loose clamps
resulting in loss of pressure and reduced engine
performance.
BRAKE SYSTEM
In order to ensure brake system performance, all
brake system components should be inspected
periodically Ú
page 394.
Fluid Level Check — Brake Master Cylinder
The fluid level of the brake master cylinder should
be checked whenever the vehicle is serviced, or
immediately if the Brake System Warning Light is
on. If necessary, add fluid to bring level within the
designated marks on the side of the reservoir of
the brake master cylinder. Be sure to clean the top
of the master cylinder area before removing cap.
With disc brakes, fluid level can be expected to fall
as the brake pads wear. Brake fluid level should be
checked when pads are replaced. If the brake fluid
is abnormally low, check the system for leaks
Úpage 476.
WARNING!
Riding the brakes can lead to brake failure and
possibly a collision. Driving with your foot resting
or riding on the brake pedal can result in
abnormally high brake temperatures, excessive
lining wear, and possible brake damage. You
would not have your full braking capacity in an
emergency.WARNING!
Use only manufacturer's recommended brake
fluid Ú page 476. Using the wrong type of
brake fluid can severely damage your brake
system and/or impair its performance. The
proper type of brake fluid for your vehicle is
also identified on the original factory installed
hydraulic master cylinder reservoir.
To avoid contamination from foreign matter or
moisture, use only new brake fluid or fluid that
has been in a tightly closed container. Keep
the master cylinder reservoir cap secured at
all times. Brake fluid in an open container
absorbs moisture from the air resulting in a
lower boiling point. This may cause it to boil
unexpectedly during hard or prolonged
braking, resulting in sudden brake failure. This
could result in a collision.
Overfilling the brake fluid reservoir can result
in spilling brake fluid on hot engine parts,
causing the brake fluid to catch fire. Brake
fluid can also damage painted and vinyl
surfaces, care should be taken to avoid its
contact with these surfaces.
Do not allow petroleum based fluid to contam -
inate the brake fluid. Brake seal components
could be damaged, causing partial or
complete brake failure. This could result in a
collision.
WARNING!
8

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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
8

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SERVICING AND MAINTENANCE435
F19 ––Spare
F20 –20 Amp Yellow Comfort Rear Seat Module (CRSM) (Heat Rear RT)
F21 ––Spare
F22 ––Spare
F23 ––Spare
F24 –15 Amp Blue Mod RF Hub / Mod Ignition / Mod Cluster CNN
F25 40 Amp Green –Mod Integrated Trailer Brake
F26 –15 Amp BlueMod Cluster CCN / Mod Cyber Security / Trailer Gateway
Module (360 Camera)
F27 –5 Amp Tan Mod Cluster CCN / Mod SGW
F28 –10 Amp Red Mod ORC
F29 –20 Amp Yellow Mod CRSM (Heat Rear LT)
F30 30 Amp Pink –Mod DTCM / Mod Tailgate
F31 30 Amp Pink –Mod CBC 1 Interior Light
F32 –20 Amp Yellow RT Spot Lamp *
F33 –10 Amp RedAssy Overhead Console / Switch 911 / Switch Assist /
Sunshade / HUD
F34 –15 Amp Blue Frt & RR Ventilated Seat Motor
F35 –10 Amp RedMod Inverter / Mtr Sunshade Sunroof / Mtr Dual Sunroof /
USB Charge Only
F36 40 Amp Green –Mod CBC 2 Exterior Light 1
Cavity Cartridge Fuse Micro Fuse Description
* If Equipped
8

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436SERVICING AND MAINTENANCE
F37 ––Spare
F38 ––Spare
F39 ––Spare
F40 20 Amp Blue –Dome Pursuit Vehicle *
F41 A&B –15 Amp BlueLumbar Support & Pass SW / Steering Column Control
Module / HVAC Control Module / ICS Switch Bank / Upper
Switch Bank
F42 A&B –10 Amp RedMod Transfer Case Switch Module (TCSM) / SBW / Electric
Park Brake SW / Module TPM Trailer / Module Gateway Can-C
Trailer TPM / Seat LT & RT Vent
F43 A&B –10 Amp Red Port Diagnostics / Front & Rear USB
F44 –20 Amp YellowRadio / DCSD / Telematics Box Mod / Trailer Gateway Module
(360)
F45 30 Amp Pink –Mod Door MUX Driver
F46 30 Amp Pink –Mod Door MUX Passenger
F47 ––Spare
F48A –10 Amp RedRear View Mirror / SW Window Passenger / Rear USB /
Wireless Charging Pad Mod
F49 –15 Amp BlueMod CVPM / SNSR Blind Spot / HDLP Adaptive Front Lighting
Sensor (AFLS)
F50A –10 Amp Red Battery PACK Control Mod *
F51 A&B ––Spare
Cavity Cartridge Fuse Micro Fuse Description
* If Equipped

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466
TECHNICAL SPECIFICATIONS
VEHICLE IDENTIFICATION NUMBER (VIN)
The VIN is found on the left front corner of the
instrument panel, visible through the windshield.
Vehicle Identification Number

NOTE:It is illegal to remove or alter the VIN.
BRAKE SYSTEM
If power assist is lost for any reason (for example,
repeated brake applications with the engine off),
the brakes will still function. However, you will
experience a substantial increase in braking effort
to stop the vehicle.
If either the front or rear hydraulic system lose
normal braking capability, the remaining system
will still function with some loss of overall braking
effectiveness. This will be evident by increased
pedal travel during application, greater pedal force
required to slow or stop, and the Brake Warning
Light and the ABS Warning Light will activate
during brake use.
WHEEL AND TIRE TORQUE SPECIFICATIONS
Proper lug nut/bolt torque is very important to
ensure that the wheel is properly mounted to the
vehicle. Any time a wheel has been removed and
reinstalled on the vehicle, the lug nuts/bolts
should be torqued using a properly calibrated
torque wrench using a six-sided (hex) deep wall
socket.
TORQUE SPECIFICATIONS
**Use only authorized dealer recommended lug
nuts/bolts and clean or remove any dirt or oil
before tightening.
NOTE:Do not oil wheel studs. For chrome wheels, do not
substitute with chrome plated wheel nuts.
Inspect the wheel mounting surface prior to
mounting the tire and remove any corrosion or
loose particles.
Lug Nut/
Bolt
Torque Lug Nut/
Bolt Type**Lug
Nut/Bolt
SizeLug Nut/
Bolt
Socket
Size
130 Ft-Lb
(176 N·m) ConeM14 x
1.5022 mm

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481
INDEX
A
Accessory Drive Belt Inspection..................... 418Adaptive Cruise Control (ACC)
(Cruise Control).........131, 136, 137, 176, 178Adding Engine Coolant (Antifreeze)............... 422Adding Fuel.......................................... 207, 208Additives, Fuel............................................... 468AdjustDown........................................................... 38Forward....................................................... 38Rearward..................................................... 38Up................................................................ 38Adjustable Pedals............................................ 44Advance Phone Connectivity......................... 280Air BagAir Bag Operation...................................... 344Air Bag Warning Light...................... 342, 344Enhanced Accident Response......... 352, 392Event Data Recorder (EDR)....................... 392Front Air Bag............................................. 344If Deployment Occurs................................ 351Knee Impact Bolsters................................ 349Maintaining Your Air Bag System.............. 353Maintenance............................................. 353Redundant Air Bag Warning Light.............342Transporting Pets...................................... 368
Air Bag Light................................ 128, 342, 368Air Cleaner, Engine
(Engine Air Cleaner Filter)............................. 410Air Conditioner Maintenance........................ 415Air Conditioner Refrigerant........................... 415Air Conditioner System................................. 415Air Conditioning......................................... 62, 65Air Conditioning Filter..............................68, 416Air Conditioning System................................... 67Air Conditioning, Operating Tips....................... 68Air Filter............................................... 410, 412Air PressureTires......................................................... 452Air Suspension......... 131, 134, 135, 165, 169AlarmSecurity Alarm....................................27, 131Alterations/ModificationsVehicle......................................................... 13Antifreeze (Engine Coolant)................. 422, 472Disposal................................................... 423Anti-Lock Brake System (ABS)...................... 312Anti-Lock Warning Light................................ 131Assist, Hill Start............................................. 318Audio Settings............................................... 268Audio Systems (Radio).................................. 233Auto Down Power Windows............................. 80
Automatic Door Locks......................................32Automatic Headlights.......................................56Automatic High Beams.....................................55Automatic Tailgate Release.............................86Automatic Temperature Control (ATC)..............67Automatic Transmission....................... 154, 426Adding Fluid.............................................. 426Fluid And Filter Change............................. 426Fluid Change............................................. 426Fluid Level Check...................................... 426Fluid Type........................................ 426, 476Special Additives...................................... 426Automatic Transmission Limp Home Mode... 158AutoPark....................................................... 142AUX Camera.................................................. 203Auxiliary Driving Systems.............................. 319Axle Fluid.............................................. 427, 476Axle Locker System....................................... 172Axle Lubrication............................................ 427
B
Back-Up Camera........................................... 199Battery................................................. 129, 408Charging System Light.............................. 129Keyless Key Fob Replacement....................21Battery Saver Feature......................................59
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482 Bed Divider
...................................................... 97Bed Step.......................................................... 90Bedliner......................................................... 463Belts, Seat..................................................... 368Blind Spot Monitoring.................................... 319Bluetooth Connecting To A Particular MobilePhone Or Audio Device After Pairing
..... 276Body Builders Guide........................................ 11Body Mechanism Lubrication........................ 418Bodywork....................................................... 461B-Pillar Location............................................. 448Brake Assist System...................................... 313Brake Control System.................................... 313Brake Fluid.......................................... 425, 476Brake System...................................... 425, 466Fluid Check............................................... 425Master Cylinder......................................... 425Parking...................................................... 150Warning Light............................................ 128Brake/Transmission Interlock....................... 154Bulb Replacement......................................... 438Bulbs, Light.......................................... 370, 438
C
Camera.......................................................... 199Camera, AUX.................................................. 203Camera, Rear................................................ 199Camera, Surround View................................. 200
Camera, Trailer 360...................................... 203Capacities, Fuel............................................ 472Caps, FillerOil (Engine)............................................... 403Radiator (Coolant Pressure)..................... 423Car Washes................................................... 462Carbon Monoxide Warning............................ 370Care And Maintenance................................. 461Cargo Light..............................................57, 135CD................................................................. 270Cellular Phone.............................................. 302Center High Mounted Stop Light................... 443Center Seat Storage Compartment.................. 70Charge Air Cooler.......................................... 424Chart, Tire Sizing........................................... 445Check Engine Light
(Malfunction Indicator Light)......................... 139Checking Your Vehicle For Safety................. 368Checks, Safety.............................................. 368Child Restraint.............................................. 354Child RestraintsBooster Seats........................................... 357Child Seat Installation..................... 363, 364How To Stow An unused ALR Seat Belt.... 362Infant And Child Restraints....................... 356Locating The LATCH Anchorages.............. 361Lower Anchors And Tethers ForChildren................................................ 359Older Children And Child Restraints......... 357Seating Positions...................................... 358
Clean Air Gasoline......................................... 468CleaningWheels...................................................... 457Climate Control................................................62Automatic....................................................62Manual........................................................65Cold Weather Operation................................ 145Compact Spare Tire...................................... 456Connected Services...................................... 282Connected Services FAQ............................... 297Connected Services Features....................... 286Connected Services, Getting Started............ 284Connected Services, Introduction................. 283Contract, Service........................................... 478Controls........................................................ 262Cooling Pressure Cap (Radiator Cap)............ 423Cooling System.................................... 130, 421Adding Coolant (Antifreeze)...................... 422Coolant Level..........................421, 423, 424Cooling Capacity....................................... 472Disposal Of Used Coolant......................... 423Drain, Flush, And Refill............................. 422Inspection........................................ 423, 424Points To Remember................................ 424Pressure Cap............................................ 423Radiator Cap............................................. 423Selection Of Coolant (Antifreeze)......................... 422, 472, 473Corrosion Protection..................................... 461

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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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