2022 RAM CHASSIS CAB hood open

354SERVICING AND MAINTENANCE
(Continued)
(Continued) Under normal operating conditions, the catalytic
converter will not require maintenance. However, it
is important to keep the engine properly tuned to
ensure proper catalyst operation and prevent
possible catalyst damage.
NOTE:Intentional tampering with emissions control
systems can result in civil penalties being
assessed against you.
In unusual situations involving grossly
malfunctioning engine operation, a scorching odor
may suggest severe and abnormal catalyst
overheating. If this occurs, stop the vehicle, turn off
the engine and allow it to cool. Service, including a
tune-up to manufacturer's specifications, should
be obtained immediately. To minimize the possibility of catalytic converter
damage:
Do not interrupt the ignition when the transmis
-
sion is in gear and the vehicle is in motion.
Do not try to start the vehicle by pushing or
towing the vehicle.
Do not idle the engine with any ignition compo -
nents disconnected or removed, such as when
diagnostic testing, or for prolonged periods
during very rough idle or malfunctioning oper -
ating conditions.
COOLING SYSTEM
WARNING!
Exhaust gases can injure or kill. They contain
carbon monoxide (CO), which is colorless and
odorless. Breathing it can make you uncon -
scious and can eventually poison you
Ú page 309.
A hot exhaust system can start a fire if you
park over materials that can burn. Such mate -
rials might be grass or leaves coming into
contact with your exhaust system. Do not park
or operate your vehicle in areas where your
exhaust system can contact anything that can
burn.
CAUTION!
The catalytic converter requires the use of
unleaded fuel only. Leaded gasoline will
destroy the effectiveness of the catalyst as an
emissions control device and may seriously
reduce engine performance and cause
serious damage to the engine.
Damage to the catalytic converter can result if
your vehicle is not kept in proper operating
condition. In the event of engine malfunction,
particularly involving engine misfire or other
apparent loss of performance, have your
vehicle serviced promptly. Continued opera -
tion of your vehicle with a severe malfunction
could cause the converter to overheat,
resulting in possible damage to the converter
and vehicle.
CAUTION!
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 open a
cooling system pressure cap when the radi -
ator or coolant bottle is hot.
Keep hands, tools, clothing, and jewelry away
from the radiator cooling fan when the hood is
raised. The fan starts automatically and may
start at any time, whether the engine is
running or not.

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358SERVICING AND MAINTENANCE
(Continued)
BRAKE SYSTEM
In order to ensure brake system performance, all
brake system components should be inspected
periodically Úpage 329.
Fluid Level Check — Brake Master Cylinder
The fluid level of the master cylinder should be
checked when performing under the hood service
or immediately if the Brake System Warning Light
indicates system failure.
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 the fluid level can be expected to
fall as the brake linings wear. However, an
unexpected drop in fluid level may be caused by a
leak and a system check should be conducted.
For further information Ú page 407.
AUTOMATIC TRANSMISSION
Special Additives
The manufacturer strongly recommends against
using any special additives in the transmission.
Automatic Transmission Fluid (ATF) is an
engineered product and its performance may be
impaired by supplemental additives. Therefore, do
not add any fluid additives to the transmission. The
only exception to this policy is the use of special
dyes for diagnosing fluid leaks in 6-speed
transmissions. Avoid using transmission sealers as
they may adversely affect seals.
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 Úpage 407. 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.
CAUTION!
Do not use chemical flushes in your
transmission as the chemicals can damage your
transmission components. Such damage is not
covered by the New Vehicle Limited Warranty.
WARNING!

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SERVICING AND MAINTENANCE373
Replacing Exterior Bulbs
BASE QUAD: LOW BEAM HEADLAMP, HIGH
BEAM HEADLAMP, FRONT PARK AND TURN —
IF EQUIPPED
Low Beam
See below steps to replace:

1. Open the hood.

2. Disconnect and isolate the negative battery
cable.
3. Reach into the front wheel house ahead of the front wheel, remove the fastener, and lift the
cover over the access hole in the front of the
wheel house splash shield. Access to the rear
of the lamp can be gained through this access
hole.

Splash Shield Access Cover
4. Reach through the access hole of the wheel
house splash shield and disengage the bulb
access cover by rotating counterclockwise.

Bulb Access Cover

5. Disconnect the internal lamp wiring harness connector from the low beam bulb. 6. Rotate the bulb counterclockwise a quarter
turn to unlock the bulb from the lamp.
7. Pull the bulb straight out from the housing.
8. Reverse the procedure for installation of new bulb and covers.
High Beam
See below steps to replace:

1. Open the hood.

2. Disconnect and isolate the negative battery cable.

Bulb Access Cover

3. Look under the hood and behind the headlamp to find the high beam bulb access
cover.
4. Reach behind the headlamp and disengage the access cover by rotating counterclockwise.
CAUTION!
Do not contaminate the bulb glass by touching
it with your fingers or by allowing it to contact
other oily surfaces. Shortened bulb life will
result.
Always use the correct bulb size and type for
replacement. An incorrect bulb size or type
may overheat and cause damage to the lamp,
the bulb socket, or the lamp wiring.
8

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374SERVICING AND MAINTENANCE
5. Disconnect the internal lamp wiring harness connector from the high beam bulb.
6. Rotate the bulb counterclockwise a quarter turn to unlock the bulb from the lamp.
7. Pull the bulb straight out from the housing.
8. Reverse the procedure for installation of new bulb and covers.
Outer Park And Turn
See below steps to replace:

1. Open the hood.

2. Disconnect and isolate the negative battery cable.
3. Reach into the front wheel house ahead of the front wheel, remove the fastener, and lift the
cover over the access hole in the front of the
wheel house splash shield. Access to the rear of the lamp can be gained through this access
hole.

Splash Shield Access Cover

4. Reach through the access hole of the wheel house splash shield and disengage the side
marker socket by rotating counterclockwise a
quarter turn.

Park And Turn Sockets
5. Pull the socket and bulb straight out from the
housing.
6. Separate the bulb from the socket without twisting.
7. Reverse the procedure for installation of new bulb and covers.
FOG LAMPS — IF EQUIPPED
Halogen
See below steps to replace:

1. Reach under and behind the front fascia/bumper to access the back of the front fog
lamp housing.

2. Disconnect the fog lamp wiring harness connector from the fog lamp bulb.

Fog Lamp Bulb

3. Rotate the bulb counterclockwise a quarter turn to unlock the bulb from the housing.
CAUTION!
Do not contaminate the bulb glass by touching
it with your fingers or by allowing it to contact
other oily surfaces. Shortened bulb life will
result.
Always use the correct bulb size and type for
replacement. An incorrect bulb size or type
may overheat and cause damage to the lamp,
the bulb socket, or the lamp wiring.

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416
F
Family Alerts
.................................................. 246Filters Air Cleaner................................................. 342Air Conditioning.................................. 61, 345Engine Fuel..................................... 347, 404Engine Oil........................................ 342, 404Engine Oil Disposal................................... 342FlashersTurn Signals..............................50, 102, 309Flash-To-Pass.................................................. 48Flat Tire Stowage........................................... 318Fluid Capacities............................................. 403Fluid Leaks.................................................... 309Fluid Level ChecksBrake........................................................ 358Power Steering.......................................... 140Fog Lights............................................... 50, 374Fold Flat Load Floor......................................... 65Fold-Flat Seats................................................. 31Forward Collision Warning............................. 266Four Wheel Drive........................................... 132Four-Way Hazard Flasher............................... 311Freeing A Stuck Vehicle................................. 324Front Axle (Differential).................................. 360Fuel............................................ 169, 399, 401Adding....................................................... 169Additives................................................... 399Clean Air.................................................... 399Diesel.............................................. 169, 401
Ethanol..................................................... 399Filler Cap (Gas Cap).................................. 169Filter................................................ 347, 404Gasoline................................................... 399Light............................................................ 99Materials Added....................................... 399Methanol.................................................. 399Octane Rating........................................... 399Requirements.................................. 399, 401Specifications........................................... 401Tank Capacity........................................... 403Fuses............................................................ 364
G
Garage Door Opener (HomeLink®).................. 43Gas Cap (Fuel Filler Cap).............................. 169Gasoline, Clean Air........................................ 399Gasoline, Reformulated................................ 399GaugesVoltage..................................................... 113Gear Ranges................................................. 127Gear Selector Override................................. 322Glass Cleaning.............................................. 396Gross Axle Weight Rating.............................. 174Gross Vehicle Weight Rating......................... 173GuideBody Builders.............................................. 10GVWR............................................................ 172
H
HazardDriving Through Flowing, Rising, Or Shallow Standing Water
....................... 189Hazard Warning Flashers.............................. 311Head Restraints...............................................35Head Rests......................................................35Headlights..................................................... 373Automatic High Beam..................................48Cleaning.................................................... 394High Beam...................................................48Lights On Reminder.....................................49Passing........................................................48Switch..........................................................47Heated Mirrors.................................................42Heated Seats...................................................34Hill Descent Control...................................... 263Hill Descent Control Indicator....................... 263Hill Start Assist.............................................. 264HitchesTrailer Towing........................................... 176HomeLink® (Garage Door Opener)..................43Hood Prop........................................................73Hood Release...................................................73Hub Caps...................................................... 318

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421
Storage, Vehicle
...................................... 60, 393Store Radio Presets....................................... 219Storing Your Vehicle...................................... 393Sunglasses Storage......................................... 64Sway Control, Trailer...................................... 266Synthetic Engine Oil....................................... 342
T
Telescoping Steering Column.......................... 27Temperature Control, Automatic (ATC)............ 60Tilt Down........................................................... 32Up................................................................ 32Tilt Steering Column........................................ 27Tip Start............................................... 107, 109Tire And Loading Information Placard........... 380Tire Markings................................................. 376Tire Safety Information.................................. 376Tires................................... 309, 383, 387, 392Aging (Life Of Tires)................................... 385Air Pressure............................................... 383Chains....................................................... 390Changing................................................... 315Compact Spare......................................... 387Dual........................................ 318, 392, 397General Information........................ 383, 387High Speed................................................ 384Inflation Pressure...................................... 383Jacking...................................................... 315Life Of Tires............................................... 385
Load Capacity........................................... 380Pressure Monitoring System (TPMS)..99, 268Quality Grading......................................... 392Radial....................................................... 384Replacement............................................ 386Rotation.................................................... 391Safety.............................................. 376, 383Sizes......................................................... 377Snow Tires................................................ 387Spare Tires...................................... 387, 388Spinning................................................... 385Trailer Towing........................................... 178Tread Wear Indicators.............................. 385Wheel Nut Torque..................................... 397To Open Hood.................................................. 73Tongue Weight/Trailer Weight...................... 177Torque Converter Clutch............................... 131Tow Mode Mirror.............................................. 39Towing................................................. 173, 325Disabled Vehicle....................................... 325Guide........................................................ 176Recreational............................................. 185Weight...................................................... 176Towing Behind A Motorhome........................ 185Traction......................................................... 188Traction Control............................................ 265Trailer Sway Control (TSC)............................. 266Trailer Towing............................................... 173Hitches..................................................... 176Minimum Requirements........................... 177
Mirrors.........................................................42Tips........................................................... 182Trailer And Tongue Weight........................ 177Wiring....................................................... 181Trailer Towing Guide..................................... 176Trailer Weight................................................ 176Transfer Case................................................ 361Electronically Shifted....................... 132, 135Fluid.......................................................... 407Transmission................................................. 122Automatic............................... 122, 126, 358Fluid.......................................................... 407Maintenance............................................ 358Shifting..................................................... 121Transporting Pets.......................................... 307Tread Wear Indicators................................... 385Turn Signals.................................. 50, 102, 373
U
UconnectPhone Call Features
................................. 228Things You Should Know About Your Uconnect Phone................................... 231Uconnect Phone............................................ 225Answer Or Ignore An Incoming Call — Call Currently In Progress..................... 230Answer Or Ignore An Incoming Call — No Call Currently In Progress................ 229Bluetooth Communication Link................ 233Call Continuation...................................... 231
11

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