2021 RAM CHASSIS CAB park assist

TECHNICAL SPECIFICATIONS435
(Continued)
CNG AND LP FUEL SYSTEM
M
ODIFICATIONS

Modifications that allow the engine to run on
Compressed Natural Gas (CNG) or Liquid
Propane (LP) may result in damage to the engine,
emissions, and fuel system components.
Problems that result from running CNG or LP are
not the responsibility of the manufacturer and
may void or not be covered under the New
Vehicle Limited Warranty.

METHYLCYCLOPENTADIENYL
M
ANGANESE TRICARBONYL (MMT) IN
G
ASOLINE

MMT is a manganese-containing metallic
additive that is blended into some gasoline to
increase octane. Gasoline blended with MMT
provides no performance advantage beyond
gasoline of the same octane number without
MMT. Gasoline blended with MMT reduces
spark plug life and reduces emissions system
performance in some vehicles. The manufacturer
recommends that gasoline without MMT be used in your vehicle. The MMT content of gasoline may
not be indicated on the gasoline pump; therefore,
you should ask your gasoline retailer whether the
gasoline contains MMT. MMT is prohibited in
Federal and California reformulated gasoline.

FUEL SYSTEM CAUTIONS
NOTE:
Intentional tampering with the emissions
control system can result in civil penalties being
assessed against you.
CAUTION!
Follow these guidelines to maintain your
vehicle’s performance:
The use of leaded gasoline is prohibited by
Federal law. Using leaded gasoline can
impair engine performance and damage
the emissions control system.
An out-of-tune engine or certain fuel or igni
-
tion malfunctions can cause the catalytic
converter to overheat. If you notice a
pungent burning odor or some light smoke,
your engine may be out of tune or malfunc -
tioning and may require immediate service.
Contact an authorized dealer for service
assistance.
The use of fuel additives, which are now
being sold as octane enhancers, is not
recommended. Most of these products
contain high concentrations of methanol.
Fuel system damage or vehicle perfor -
mance problems resulting from the use of
such fuels or additives is not the responsi -
bility of the manufacturer and may void or
not be covered under the New Vehicle
Limited Warranty.
CAUTION! (Continued)
9

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450
INDEX
 Pair (Link) Uconnect Phone To A Mobile
Phone............................................................ 260 WARRANTY INFORMATION...................... 447
A
Adaptive Cruise Control (ACC)
(Cruise Control)
.................................... 164, 166Adding Engine Coolant (Antifreeze)............... 384Adding Fuel.................................................... 196Additives, Fuel............................................... 434Adjust Down........................................................... 35Forward....................................................... 35Rearward..................................................... 35Up................................................................ 35Adjustable Pedals............................................ 40Advance Phone Connectivity......................... 266Air BagAir Bag Operation...................................... 305Air Bag Warning Light................................ 303Enhanced Accident Response......... 310, 352Event Data Recorder (EDR)....................... 352If Deployment Occurs................................ 309Knee Impact Bolsters................................ 305Maintaining Your Air Bag System.............. 311Maintenance............................................. 311
Redundant Air Bag Warning Light............. 303Transporting Pets..................................... 330Air Bag Light................................ 107, 303, 331Air Cleaner, Engine (Engine Air Cleaner
Filter)................................................... 369, 391Air Conditioner Maintenance........................ 371Air Conditioner Refrigerant.................. 371, 372Air Conditioner System................................. 371Air Conditioning................................................ 62Air Conditioning Filter....................................... 65Air Conditioning System................................... 64Air Conditioning, Operating Tips....................... 65Air Filter........................................................ 369Air PressureTires......................................................... 415AlarmSecurity Alarm....................................23, 108Alterations/ModificationsVehicle......................................................... 10Antifreeze (Engine Coolant).......................... 384Capacities................................................. 439Disposal................................................... 385Anti-Lock Brake System (ABS)...................... 273Anti-Lock Warning Light................................ 113Assist, Hill Start............................................. 280Audio Settings............................................... 253Audio Systems (Radio).................................. 220
Auto Down Power Windows..............................77Automatic Door Locks......................................28Automatic Headlights.......................................52Automatic Temperature Control (ATC)..............64Automatic Transmission....................... 141, 389Adding Fluid.............................................. 389Fluid And Filter Change............................. 389Fluid Change............................................. 389Fluid Level Check............................. 387, 388Fluid Type........................................ 390, 444Shifting..................................................... 146Special Additives...................................... 387Automatic Transmission Limp Home Mode... 145AutoPark....................................................... 120AUX Camera......................................... 188, 194Auxiliary Driving Systems.............................. 281Axle Fluid.....................................390, 391, 444Axle Lubrication................................... 390, 391
B
Back-Up......................................................... 186Back-Up Camera........................................... 186Battery................................................. 108, 366Blanket..................................................... 130Charging System Light.............................. 108Keyless Key Fob Replacement....................16Battery Saver Feature......................................54

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451
Belts, Seat
..................................................... 330Bluetooth Connecting To A Particular Mobile Phone Or Audio Device After Pairing
................262Body Builders Guide........................................ 10Body Mechanism Lubrication........................ 380B-Pillar Location............................................. 411Brake Assist System...................................... 274Brake Control System.................................... 274Brake Fluid.......................................... 387, 444Brake System...................................... 387, 431Fluid Check............................................... 387Master Cylinder......................................... 387Parking...................................................... 137Warning Light............................................ 107Brake/Transmission Interlock....................... 141Bulb Replacement......................................... 401Bulbs, Light.......................................... 332, 401
C
Cab Top Clearance Lights.............................. 405Camera.......................................................... 186Camera, AUX........................................ 188, 194Camera, Rear...................................... 186, 189Capacities, Antifreeze (Engine Coolant)......... 439Capacities, Fluid............................................ 439Caps, FillerOil (Engine)................................................ 364Power Steering.......................................... 163Radiator (Coolant Pressure)...................... 385
Car Washes................................................... 428Carbon Monoxide Warning............................ 333Cargo Light....................................................... 54CD................................................................. 255Cellular Phone.............................................. 269Center High Mounted Stop Light................... 405Center Seat Storage Compartment.................. 67Changing A Flat Tire...................................... 339Charge Air Cooler.......................................... 386Chart, Tire Sizing........................................... 407Check Engine Light (Malfunction
Indicator Light).............................................. 117Checking Your Vehicle For Safety................. 330Checks, Safety.............................................. 330Child Restraint.............................................. 312Child RestraintsBooster Seats........................................... 315Child Seat Installation..................... 323, 325How To Stow An unused ALR Seat Belt.... 322Infant And Child Restraints....................... 313Locating The LATCH Anchorages.............. 320Lower Anchors And Tethers For Children.. 317Older Children And Child Restraints......... 314Seating Positions...................................... 316Clean Air Gasoline......................................... 433CleaningWheels..................................................... 421Climate Control................................................ 58Automatic.................................................... 59Manual........................................................ 62
Cold Weather Operation................................ 122Compact Spare Tire...................................... 419Contract, Service........................................... 446Controls........................................................ 247Cooling Pressure Cap (Radiator Cap)............ 385Cooling System............................................. 383Adding Coolant (Antifreeze)...................... 384Coolant Level................................... 384, 386Cooling Capacity....................................... 439Disposal Of Used Coolant......................... 385Drain, Flush, And Refill............................. 384Inspection................................................. 386Points To Remember................................ 386Pressure Cap............................................ 385Radiator Cap............................................. 385Selection Of Coolant (Antifreeze)..... 384, 440Corrosion Protection..................................... 427Cruise Control (Speed Control)............. 164, 166Cruise Light................................................... 115Customer Assistance.................................... 445Cybersecurity................................................ 220
D
Daytime Running Lights...................................51Dealer Service............................................... 367Defroster, Rear Window...................................62Defroster, Windshield............................ 62, 331Delay (Intermittent) Wipers..............................57Deleting A Phone........................................... 262Diagnostic System, Onboard......................... 116
11

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454 J
Jack Location
................................................. 339Jack Operation............................................... 339Jacking And Tire Changing............................. 339Jump Starting................................................ 344
K
Key Fob Programming Additional Key Fobs
.............. 17Key Fob Battery Service (Remote
Keyless Entry).................................................. 16Key Fob Programming (Remote
Keyless Entry).................................................. 17Keyless Enter-N-Go........................26, 118, 123Passive Entry............................................... 26Keys................................................................. 15
L
Lane Change And Turn Signals........................ 54Lane Change Assist......................................... 54LaneSense.................................................... 183Latches.......................................................... 332Hood........................................................... 79Lead Free Gasoline........................................ 433Leaks, Fluid................................................... 332Life Of Tires................................................... 417Light Bulbs........................................... 332, 401
Lights............................................................ 332Air Bag.................................... 107, 303, 331Automatic High Beam.................................. 52Brake Assist Warning............................... 277Brake Warning.......................................... 107Bulb Replacement.................................... 401Cab Top Clearance................................... 405Cargo........................................................... 54Center Mounted Stop............................... 405Courtesy/Reading....................................... 55Cruise....................................................... 115Daytime Running......................................... 51Electronic Stability Program(ESP) Indicator............................................... 108Exterior...............................................50, 332Fog........................................................... 404Four Wheel Drive Indicator....................... 162Hazard Warning Flasher........................... 334Headlights............................................ 50, 52High Beam................................................... 51Hill Descent Control Indicator................... 278Illuminated Entry......................................... 56Interior......................................................... 55Lights On Reminder..................................... 53Low Fuel................................................... 111Malfunction Indicator (Check Engine)....... 110Park.......................................................... 115Passing........................................................ 52
Seat Belt Reminder.................................. 107Security Alarm.......................................... 108Service...................................................... 401Traction Control........................................ 277Transfer Case........................................... 162Turn Signals..................... 54, 115, 332, 402Warning Instrument Cluster Descriptions................................ 108, 115Limited-Slip Differential....................... 162, 391Load Shed Battery Saver Mode..................... 105Load Shed Battery Saver On......................... 105Load Shed Electrical Load Reduction........... 105Load Shed Intelligent Battery Sensor............ 105Loading Vehicle............................................. 199Tires.......................................................... 411LocksAutomatic Door............................................28Child Protection...........................................28Power Door..................................................25Low Tire Pressure System............................. 284Lubrication, Body.......................................... 380Lug Nuts/Bolts..................................... 342, 432
M
Maintenance Free Battery............................ 366Maintenance Plan......................................... 359Maintenance Schedule............... 353, 357, 359Malfunction Indicator Light (Check Engine).. 110

21_DPF_OM_EN_USC_t.book Page 454

456 Power Steering Fluid
...................................... 444Pregnant Women And Seat Belts...................300Preparation For Jacking................................. 339Presets.......................................................... 253PTO (Power Take-Off)..................................... 163
R
Radial Ply Tires.............................................. 416Radiator Cap (Coolant Pressure Cap).. 384, 385Radio Presets...................................................... 253Radio Controls............................................... 247Radio Mode................................................... 247Radio Operation.................................. 247, 269Radio Remote Controls.................................. 247Rain Sensitive Wiper System........................... 58Rear Axle (Differential)......................... 390, 391Rear Camera................................................. 189Rear ParkSense System................................ 177Rear Window, Sliding....................................... 78Recreational Towing...................................... 214Shifting Into Transfer Case Neutral (N)..... 216Shifting Out Of Transfer Case Neutral (N).. 217Reformulated Gasoline.................................. 433Refrigerant.................................................... 372Release, Hood................................................. 79Reminder, Seat Belt...................................... 294Remote Keyless Entry...................................... 15Programming Additional Key Fobs.............. 17Remote Sound System (Radio) Control......... 247
Remote Start (Diesel)...................................... 22Remote Start (Gasoline).................................. 20Remote StartingExit Remote Start Mode.............................. 21Replacement Bulbs...................................... 401Replacement Tires........................................ 417Reporting Safety Defects.............................. 447Resetting Perform Service Indicator............. 358Restraints, Child........................................... 312Restraints, Head.............................................. 38Rotation, Tires.............................................. 424
S
Safety........................................................... 246Safety Checks Inside Vehicle........................ 330Safety Checks Outside Vehicle..................... 332Safety Defects, Reporting............................. 447Safety Features............................................. 246Safety Information, Tire................................ 406Safety Tips.................................................... 330Safety, Exhaust Gas...................................... 333Satellite Radio.............................................. 249Saved Radio Stations................................... 253Schedule, Maintenance................................ 353Seat BeltAutomatic Locking Retractor (ALR)........... 301Seat Belt Reminder....................................... 107Seat Belts............................................ 293, 330Adjustable Shoulder Belt.......................... 297
Adjustable Upper Shoulder Anchorage..... 297Adjustable Upper Shoulder Belt Anchorage............................................ 297Child Restraints........................................ 312Extender................................................... 299Front Seat........................................ 293, 296Inspection................................................. 330Lap/Shoulder Belt Operation.................... 296Lap/Shoulder Belt Untwisting................... 297Operating Instructions.............................. 296Pregnant Women...................................... 300Reminder.................................................. 294Seat Belt Extender.................................... 299Seat Belt Reminder.................................. 294Untwisting Procedure................................ 297Seat Belts Maintenance................................ 429Seats.................................................. 33, 34, 35Adjustment...........................................33, 35Easy Entry....................................................36Folding Floor................................................70Head Restraints...........................................38Memory.......................................................32Power...........................................................35Rear Folding................................................33Tilting...........................................................33Security Alarm........................................ 23, 108Selection Of Coolant (Antifreeze).................. 440Sentry Key (Immobilizer)..................................17Service Assistance........................................ 445Service Contract............................................ 446

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