brake fluid RAM 1500 2022 Owner's Manual

406SERVICING AND MAINTENANCE
3.0L DIESEL ENGINE
1 — Engine Air Cleaner Filter 5 — Brake Fluid Reservoir Cap
2 — Engine Coolant Reservoir Pressure Cap 6 — Battery
3 — Engine Oil Dipstick 7 — Washer Fluid Reservoir Cap
4 — Engine Oil Fill 8 — Power Distribution Center (Fuses)

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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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476TECHNICAL SPECIFICATIONS
CHASSIS FLUIDS AND LUBRICANTS
Component Fluid, Lubricant, or Genuine Part
Automatic Transmission Use only Mopar® ZF 8 & 9 Speed ATF Automatic Transmission Fluid, or
equivalent. Failure to use the correct fluid may affect the function or
performance of your transmission.
Transfer Case – 48-11 Active On-Demand 2–speed Transfer Case (With 4WD
AUTO) We recommend using Mobil Fluid LT.
Transfer Case – 48-12 Part Time 2–Speed Transfer Case (Without 4WD AUTO) We recommend using Shell Spirax S2 ATF A389.
Front Axle We recommend using Mopar® GL-5 Synthetic Axle Lubricant SAE 75W-85.
Rear Axle (3.21/3.55) We recommend using Mopar® Synthetic Gear Lubricant SAE 75W-90
(MS-A0160). Limited-Slip Rear Axles require the addition of 5 oz. (148 ml)
Mopar® Limited Slip Additive (MS-10111).
Rear Axle (3.92) We recommend using Mopar® Synthetic Gear Lubricant SAE 75W-140
(MS-8985). Limited-Slip Rear Axles require the addition of 5 oz. (148 ml)
Mopar® Limited Slip Additive (MS-10111).
Max Tow Rear Axle (3.92) We recommend using Dana SAE 80W90 Axle Lubricant.
Brake Master Cylinder We recommend using Mopar® DOT 3 Brake Fluid, SAE J1709.

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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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484 Oil Selection
.................................... 409, 472Oil Synthetic.............................................. 409Oil Temperature........................................ 130Overheating............................................... 387Starting........................................... 141, 144Enhanced Accident Response
Feature................................................ 352, 392Entry System, Illuminated................................ 60Ethanol.......................................................... 468Exhaust Gas Cautions.................................... 370Exhaust System................................... 370, 420Exterior Lights......................................... 54, 370
F
Family Alerts.................................................. 296FiltersAir Cleaner................................................. 410Air Conditioning.................................. 68, 416Engine Fuel............................................... 412Engine Oil........................................ 409, 473Engine Oil Disposal................................... 409FlashersTurn Signals.................................... 137, 370Flash-To-Pass.................................................. 55Flat Tire Stowage........................................... 382Fluid Capacities............................................. 472Fluid Leaks.................................................... 370Fluid Level ChecksBrake........................................................ 425Fluid, Brake................................................... 476
Fog Lights..................................... 57, 136, 442Fold-Flat Seats................................................. 35Forward Collision Warning.......... 133, 135, 325Four Wheel Drive............... 133, 135, 137, 160Four-Way Hazard Flasher.............................. 371Freeing A Stuck Vehicle................................ 389Front Axle (Differential)................................. 427Fuel............................................. 208, 467, 469Adding............................................. 207, 208Additives................................................... 468Clean Air................................................... 468Ethanol..................................................... 468Filter......................................................... 412Gasoline................................................... 467Light......................................................... 132Materials Added....................................... 468Methanol.................................................. 468Octane Rating.................................. 467, 473Requirements......................... 467, 469, 472Specifications........................................... 470Tank Capacity........................................... 472Fuel Saver Technology.................................. 174Fuses............................................................ 427
G
Garage Door Opener (HomeLink)..................... 49Gasoline, Clean Air........................................ 468Gasoline, Reformulated................................ 468GaugesVoltage..................................................... 146
Glass Cleaning.............................................. 465Grocery Bag Retainer.......................................41Gross Axle Weight Rating.............................. 213Gross Combination Weight Rating................ 213Gross Trailer Weight...................................... 213Gross Vehicle Weight Rating......................... 213GuideBody Builders...............................................11GVWR............................................................ 211
H
HazardDriving Through Flowing, Rising, Or Shallow Standing Water
................... 231Hazard Warning Flashers.............................. 371Head Restraints...............................................41Head Rests......................................................41Headlights............................................ 136, 440Cleaning.................................................... 462Delay...........................................................56High Beam......................................... 55, 137High Beam/Low Beam Select Switch..........55Lights On Reminder.....................................56On With Wipers............................................56Passing........................................................55Switch..........................................................54Heads Up Display (HUD)....................... 121, 122Heated Mirrors.................................................49Heated Seats...................................................39Heated Steering Wheel....................................34

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485
Heater, Engine Block
..................................... 149High Beam/Low Beam Select
(Dimmer) Switch.............................................. 55Hill Descent Control............................. 137, 316Hill Descent Control Indicator........................ 316Hill Start Assist.............................................. 318Hitches Trailer Towing............................................ 216HomeLink (Garage Door Opener).................... 49HoodOpening..................................................... 130Hood Release.................................................. 85HUD..................................................... 121, 122
I
Ignition............................................................ 23Switch......................................................... 23Ignition Park Interlock.................................... 154Illuminated Entry............................................. 60Inside Rearview Mirror............................ 45, 372Instrument
Cluster............ 106, 108, 110, 111, 113, 114Descriptions.................. 107, 109, 111, 114Display...................................................... 114Engine Oil Reset........................................ 116Location And Controls............................... 115Menu Items............................................... 116
Instrument Cluster DisplayAudio........................................................ 121Driver Assist............................................. 117Fuel Economy........................................... 120Off-Road................................................... 117Speedometer............................................ 116StopStart.................................................. 120Stored Messages...................................... 121Trailer Tow................................................ 121Trip........................................................... 120Vehicle Info............................................... 116Instrument Panel Lens Cleaning................... 465Integrated Trailer Brake Control................... 221Interior Appearance Care.............................. 464Interior Lights................................................... 59Intervention Regeneration Strategy..... 124, 414Inverter Outlet (115V)...................................... 77
J
Jack Location................................................ 375Jump Starting............................................... 384
K
Key Fob............................................................ 19Programming Additional Key Fobs............... 22Key Fob Battery Replacement......................... 21
Key Fob Programming
(Remote Keyless Entry)....................................22Keyless Enter-N-Go................................ 30, 141Passive Entry...............................................30Keys.................................................................19
L
Lane Change Assist..........................................57LaneSense........................ 132, 136, 137, 196Lap/Shoulder Belts....................................... 336Latches......................................................... 370Hood............................................................85Lead Free Gasoline....................................... 467Leaks, Fluid................................................... 370Life Of Tires................................................... 454Light Bulbs........................................... 370, 438Lights............................................................ 3704WD.......................................................... 1354WD AUTO................................................ 1374WD High................................................. 1354WD Low.................................................. 135Air Bag.................................... 128, 342, 368Air Suspension Aerodynamic Height......... 134Air Suspension Fault................................. 131Air Suspension Off-Road 1........................ 134Air Suspension Off-Road 2........................ 134
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486 Air Suspension Payload Protection
............ 134Air Suspension Ride Height Lowering........ 135Air Suspension Ride Height Raising..........134Anti-Lock Brake System............................. 131Brake Assist Warning................................ 316Brake Warning.......................................... 128Bulb Replacement..................................... 438Cargo.................................................. 57, 135Center Mounted Stop................................ 443Courtesy/Reading....................................... 59Cruise.............................................. 136, 137Daytime Running......................................... 55ECO Mode................................................. 136Electric Power Steering............................. 130Electronic Park Brake................................ 131Electronic Stability Control........................ 131Electronic Throttle Control......................... 129Engine Coolant Temperature..................... 130Exterior............................................... 54, 370Fog.................................................. 136, 442Forward Collision Warning......................... 135Hazard Warning Flasher............................ 371Headlights............................................ 54, 56High Beam......................................... 55, 137High Beam/Low Beam Select..................... 55Hill Descent Control Indicator.......... 137, 316Hood Open................................................ 130Illuminated Entry......................................... 60Interior........................................................ 59LaneSense...................................... 136, 137
Lights On Reminder..................................... 56Low Diesel Exhaust Fluid.......................... 135Low Fuel................................................... 136Malfunction Indicator (Check Engine)....... 132NEUTRAL.................................................. 135Oil Temperature........................................ 130Passing........................................................ 55Rear Axle Lock.......................................... 135Rear Axle Lock Fault................................. 133Rear Tail Lamps....................................... 442Seat Belt Reminder.................................. 130Security Alarm.......................................... 131Service..................................................... 438Service Stop Start..................................... 133Stop Start Active....................................... 136TOW HAUL................................................ 135Traction Control........................................ 316Transmission Temperature....................... 131Turn Signals.................................... 137, 440Wait To Start............................................. 135Warning Instrument ClusterDescriptions......................................... 137Limited-Slip Differential....................... 173, 427Load Shed Battery Saver Mode.................... 127Load Shed Battery Saver On......................... 127Load Shed Electrical Load Reduction........... 127Load Shed Intelligent Battery Sensor............ 127Loading Vehicle............................................ 211Tires......................................................... 448
LocksAutomatic Door............................................32Child Protection...........................................32Power Door..................................................29Low Tire Pressure System............................. 328Lubrication, Body.......................................... 418Lug Nuts........................................................ 466Lug Nuts/Bolts.............................................. 466
M
Maintenance.............................................83, 85Maintenance Free Battery............................ 408Maintenance Schedule............... 393, 398, 399Malfunction Indicator Light
(Check Engine).............................................. 132ManualService...................................................... 480Media Hub.......................................................75Media Mode.................................................. 270Memory Seat....................................................34Memory Settings..............................................34Methanol....................................................... 468Mirrors.............................................................45Automatic Dimming.....................................45Digital..........................................................46Electric Powered..........................................48Heated.........................................................49Manual Dimming.........................................45Memory.......................................................34Outside........................................................47

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