2022 RAM 1500 brake

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

22_DT_OM_EN_USC_t.book Page 425

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

22_DT_OM_EN_USC_t.book Page 431

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

22_DT_OM_EN_USC_t.book Page 436

SERVICING AND MAINTENANCE457
Full Size Spare — If Equipped
The full size spare is for temporary emergency use
only. This tire may look like the originally equipped
tire on the front or rear axle of your vehicle, but it is
not. This spare tire may have limited tread life.
When the tread is worn to the tread wear
indicators, the temporary use full size spare tire
needs to be replaced. Since it is not the same as
your original equipment tire, replace (or repair) the
original equipment tire and reinstall on the vehicle
at the first opportunity.
Limited Use Spare — If Equipped
The limited use spare tire is for temporary
emergency use only. This tire is identified by a label
located on the limited use spare wheel. This label
contains the driving limitations for this spare. This
tire may look like the original equipped tire on the
front or rear axle of your vehicle, but it is not.
Installation of this limited use spare tire affects
vehicle handling. Since it is not the same as your
original equipment tire, replace (or repair) the
original equipment tire and reinstall on the vehicle
at the first opportunity.
WHEEL AND WHEEL TRIM CARE
All wheels and wheel trim, especially aluminum
and chrome plated wheels, should be cleaned
regularly using mild (neutral Ph) soap and water to
maintain their luster and to prevent corrosion.
Wash wheels with the same soap solution
recommended for the body of the vehicle and
remember to always wash when the surfaces are
not hot to the touch. Your wheels are susceptible to deterioration
caused by salt, sodium chloride, magnesium
chloride, calcium chloride, etc., and other road
chemicals used to melt ice or control dust on dirt
roads. Use a soft cloth or sponge and mild soap to
wipe away promptly. Do not use harsh chemicals or
a stiff brush. They can damage the wheel’s
protective coating that helps keep them from
corroding and tarnishing.
When cleaning extremely dirty wheels including
excessive brake dust, care must be taken in the
selection of tire and wheel cleaning chemicals and
equipment to prevent damage to the wheels.
Mopar® Wheel Treatment or Mopar® Chrome
Cleaner or their equivalent is recommended or
select a non-abrasive, non-acidic cleaner for
aluminum or chrome wheels.
WARNING!
Limited use spares are for emergency use only.
Installation of this limited use spare tire affects
vehicle handling. With this tire, do not drive
more than the speed listed on the limited use
spare wheel. Keep inflated to the cold tire
inflation pressures listed on your Tire and
Loading Information Placard located on the
driver’s side B-pillar or the rear edge of the
driver’s side door. Replace (or repair) the original
equipment tire at the first opportunity and
reinstall it on your vehicle. Failure to do so could
result in loss of vehicle control.
CAUTION!
Avoid products or automatic car washes that use
acidic solutions or strong alkaline additives or
harsh brushes. Many aftermarket wheel
cleaners and automatic car washes may
damage the wheel's protective finish. Such
damage is not covered by the New Vehicle
Limited Warranty. Only car wash soap, Mopar®
Wheel Cleaner or equivalent is recommended.
8

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458SERVICING AND MAINTENANCE
NOTE:If you intend parking or storing your vehicle for an
extended period after cleaning the wheels with
wheel cleaner, drive your vehicle and apply the
brakes to remove the water droplets from the
brake components. This activity will remove the red rust on the brake
rotors and prevent vehicle vibration when braking.
Dark Vapor Chrome, Black Satin Chrome, or Low
Gloss Clear Coat Wheels
SNOW TRACTION DEVICES
Use of traction devices require sufficient
tire-to-body clearance. Due to limited clearance,
the following snow traction devices are
recommended. Follow these recommendations to
guard against damage:
Snow traction device must be of proper size for
the tire, as recommended by the snow traction
device manufacturer.
No other tire sizes are recommended for use
with the snow traction device.
Please follow the table below for the recom
-
mended tire size, axle and snow traction device:
CAUTION!
Do not use scouring pads, steel wool, a bristle
brush, metal polishes or oven cleaner. These
products may damage the wheel's protective
finish. Such damage is not covered by the New
Vehicle Limited Warranty. Only car wash soap,
Mopar® Wheel Cleaner or equivalent is
recommended.
CAUTION!
If your vehicle is equipped with these specialty
wheels, DO NOT USE wheel cleaners, abrasives,
or polishing compounds. They will permanently
damage this finish and such damage is not
covered by the New Vehicle Limited Warranty.
HAND WASH ONLY USING MILD SOAP AND
WATER WITH A SOFT CLOTH. Used on a regular
basis; this is all that is required to maintain this
finish.
4x2 (2WD)
Trim Level Axle
Tire/Wheel SizeSnow Traction Device (maximum
projection beyond tire profile or equivalent)
HFE
Tradesman
Bighorn Lonestar
Laramie Rear
275/65R18
275/55R20 S Class
Longhorn
Sport
Limited Rear
275/55R20 S Class
REBEL Not Chainable

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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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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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