2021 RAM 1500 fuse

8
VEHICLE MAINTENANCE .................................. 409 Engine Oil — Gas Engine ...........................410
Engine Oil Filter ..........................................410Engine Air Cleaner Filter ............................411
Draining Fuel/Water Separator Filter —
Diesel Engine ............................................412 Underbody Mounted Fuel Filter
Replacement — Diesel Engine ..................413 Priming If The Engine Has Run Out Of
Fuel — Diesel Engine .................................414 Intervention Regeneration Strategy —
Message Process Flow (Diesel Engine) ....414 Diesel Exhaust Fluid ..................................415Air Conditioner Maintenance ....................415
Accessory Drive Belt Inspection................417Body Lubrication ........................................418
Windshield Wiper Blades ..........................418
Exhaust System ........................................420
Cooling System .........................................421
Charge Air Cooler — Inter-Cooler (Diesel
Engine)........................................................ 424 Brake System ............................................425
Automatic Transmission ...........................426
Rear Axle And 4x4 Front Driving Axle
Fluid Level .................................................426 Transfer Case ............................................427
FUSES .........................................................427
BULB REPLACEMENT ................................437 TIRES....................................................................443
Tire Safety Information .............................. 443
Tires — General Information ..................... 449Tire Types ................................................... 454
Spare Tires — If Equipped ......................... 455
Wheel And Wheel Trim Care ..................... 456Snow Traction Devices .............................. 458
Tire Rotation Recommendations ............. 460
DEPARTMENT OF TRANSPORTATION
UNIFORM TIRE QUALITY GRADES .................. 460
Treadwear .................................................. 460
Traction Grades ......................................... 461
Temperature Grades ................................. 461
STORING THE VEHICLE ......................................461
BODYWORK ........................................................ 461
Protection From Atmospheric Agents....... 461
Body And Underbody Maintenance .......... 462Preserving The Bodywork .......................... 462
INTERIORS ......................................................... 464
Seats And Fabric Parts .............................. 464
Plastic And Coated Parts ........................... 465
Leather Surfaces ....................................... 465Glass Surfaces .......................................... 466
TECHNICAL SPECIFICATIONS
VEHICLE IDENTIFICATION NUMBER ................ 467
BRAKE SYSTEM ................................................ 467
WHEEL AND TIRE TORQUE
SPECIFICATIONS ................................................ 467
Torque Specifications ............................... 467
FUEL REQUIREMENTS — GASOLINE
ENGINE ............................................................... 468
3.6L Engine ............................................... 468
5.7L Engine ................................................ 469
Reformulated Gasoline ............................. 469
Materials Added To Fuel ........................... 469
Gasoline/Oxygenate Blends ..................... 469
Do Not Use E-85 In Non-Flex Fuel
Vehicles ...................................................... 470 CNG And LP Fuel System Modifications .. 470Methylcyclopentadienyl Manganese
Tricarbonyl (MMT) In Gasoline .................. 470 Fuel System Cautions................................ 470
FUEL REQUIREMENTS – DIESEL ENGINE ....... 471
Diesel Fuel Specifications......................... 471
Biodiesel Fuel Requirements.................... 472
FLUID CAPACITIES ............................................ 474
ENGINE FLUIDS AND LUBRICANTS ................ 475
CHASSIS FLUIDS AND LUBRICANTS ............... 478

21_DT_OM_EN_USC_t.book Page 8

74GETTING TO KNOW YOUR VEHICLE
(Continued)

Center Console USB/AUX Media Hub

Some USB ports support media and charging.
You can use features, such as Apple CarPlay®,
Android Auto™, Pandora®, and others while
charging your phone.
NOTE:
Plugging in a phone or another USB device may
cause the connection to a previous device to be
lost.
For further information, refer to the Uconnect
Owner’s Manual Supplement or visit
UconnectPhone.com.
ELECTRICAL POWER OUTLETS
The auxiliary 12 Volt (13 Amp) power outlet can
provide power for in-cab accessories designed
for use with the standard “cigarette lighter”
style plug. The 12 Volt power outlets and 5 Volt
(2.5 Amp) USB Port (Charge Only) have a cap
attached to the outlet indicating “12V DC”,
together with either a key symbol, battery
symbol, or USB symbol.
A key symbol indicates that the ignition must be
in the ON/RUN or ACC positions for the outlet to
provide power. The battery symbol indicates
that the outlet is connected to the battery, and
can provide power at all times. An auxiliary power outlet can be found in the
tray on top of the center stack. This power outlet
only works when the ignition is in the ON/RUN
or ACC position.

Power Outlet — Top Of Center Stack

1 — Standard USB Type A Ports
2 — Mini-USB Type C Ports
3 — AUX Port
CAUTION!
Do not exceed the maximum power of 160
Watts (13 Amps) at 12 Volts. If the 160
Watts (13 Amps) power rating is exceeded,
the fuse protecting the system will need to
be replaced.
Power outlets are designed for accessory
plugs only. Do not insert any other object in
the power outlets as this will damage the
outlet and blow the fuse. Improper use of
the power outlet can cause damage not
covered by your New Vehicle Limited
Warranty.
CAUTION! (Continued)

21_DT_OM_EN_USC_t.book Page 74

GETTING TO KNOW YOUR VEHICLE75
(Continued)

Power Outlet Fuse Locations

When the vehicle is turned off, be sure to
unplug any equipment as to not drain the
battery of the vehicle. All accessories connected
to the outlet(s) should be removed or turned off
when the vehicle is not in use to protect the
battery against discharge.POWER INVERTER — IF EQUIPPED
A 115 Volt (400 Watts Maximum) inverter may
be located inside the center console towards
the right hand side. This inverter can power
cellular phones, electronics and other low
power devices requiring power up to 400 Watts.
Certain high-end video game consoles exceed
this power limit, as will most power tools.

Center Console Power Inverter Outlet
1 — F54 Fuse 20 A Yellow Power Outlet Battery
Fed Position
2 — F54 Fuse 20 A Yellow Power Outlet Ignition
Fed Position
3 — F48 Fuse 10 A Red Port Power or Rear USB
(Charge Only)
WARNING!
To avoid serious injury or death:
Only devices designed for use in this type of
outlet should be inserted into any 12 Volt
outlet.
Do not touch with wet hands.
Close the lid when not in use and while
driving the vehicle.
If this outlet is mishandled, it may cause an
electric shock and failure.
CAUTION!
Many accessories that can be plugged in
draw power from the vehicle's battery, even
when not in use (i.e., cellular phones, etc.).
Eventually, if plugged in long enough, the
vehicle's battery will discharge sufficiently
to degrade battery life and/or prevent the
engine from starting.
Accessories that draw higher power (i.e.,
coolers, vacuum cleaners, lights, etc.), will
discharge the battery even more quickly.
Only use these intermittently and with
greater caution.
After the use of high power draw accesso -
ries, or long periods of the vehicle not being
started (with accessories still plugged in),
the vehicle must be driven a sufficient
length of time to allow the generator to
recharge the vehicle's battery.
CAUTION! (Continued)
2

21_DT_OM_EN_USC_t.book Page 75

386IN CASE OF EMERGENCY
NOTE:
Ensure that the jack slides into the front hold
down location.
5. Turn the wing bolt clockwise to secure to the
floor pan. Reinstall the plastic cover.

Jack Hold Down Wing Bolt
JUMP STARTING
If your vehicle has a discharged battery, it can
be jump started using a set of jumper cables
and a battery in another vehicle, or by using a
portable battery booster pack. Jump starting
can be dangerous if done improperly, so please
follow the procedures in this section carefully.
NOTE:
When using a portable battery booster pack,
follow the manufacturer's operating instruc -
tions and precautions.
PREPARATIONS FOR JUMP START
The battery in your vehicle is located in the front
of the engine compartment, behind the left
headlight assembly.

Battery Location

NOTE:
The positive battery post may be covered with a
protective cap. Lift up on the cap to gain access
to the positive battery post. Do not jump off
fuses. Only jump directly off positive post which
has a positive (+) symbol on or around the post.
WARNING!
After using the jack and tools, always reinstall
them in the original carrier and location.
While driving you may experience abrupt
stopping, rapid acceleration or sharp turns. A
loose jack, tools, bracket or other objects in
the vehicle may move around with force,
resulting in serious injury.
WARNING!
Do not attempt jump starting if the battery is
frozen. It could rupture or explode and cause
personal injury.
CAUTION!
Do not use a portable battery booster pack or
any other booster source with a system
voltage greater than 12 Volts or damage to
the battery, starter motor, alternator or
electrical system may occur.

21_DT_OM_EN_USC_t.book Page 386

388IN CASE OF EMERGENCY

1. Connect the positive
(+) end of the jumper
cable to the positive (+)
post of the
discharged vehicle.

NOTE:
Do not jump off fuses. Only jump directly off
positive post.
2. Connect the opposite end of the positive (+)
jumper cable to the positive (+) post of the
booster battery.
3. Connect the negative (-) end of the jumper
cable to the negative (-) post of the booster
battery.
4. Connect the opposite end of the negative (-)
jumper cable to a good engine ground. A
“ground” is an exposed metallic/unpainted
part of the engine, frame or chassis, such as
an accessory bracket or large bolt. The
ground must be away from the battery and
the fuel injection system. 5. Start the engine in the vehicle that has the
booster battery, let the engine idle a few
minutes, and then start the engine in the
vehicle with the discharged battery.
6. Once the engine is started, follow the disconnection procedure below.
Disconnecting The Jumper Cables

1. Disconnect the negative
(-)
end of the
jumper cable from the engine ground of
the vehicle with the discharged battery.

2. Disconnect the opposite end of the negative (-) jumper cable from the negative (-) post of
the booster battery. 3. Disconnect the positive
(+) end of the
jumper cable from the positive (+) post of
the booster battery.

4. Disconnect the opposite end of the positive (+) jumper cable from the positive
(+) post of the vehicle with the discharged
battery.

If frequent jump starting is required to start your
vehicle you should have the battery and
charging system inspected at an authorized
dealer.
WARNING!
Do not connect the jumper cable to the
negative (-) post of the discharged battery.
The resulting electrical spark could cause the
battery to explode and could result in
personal injury.
CAUTION!
Do not connect jumper cable to any of the
fuses on the positive battery terminal. The
resulting electrical current will blow the fuse.
CAUTION!
Accessories plugged into the vehicle power
outlets draw power from the vehicle’s battery,
even when not in use (i.e., cellular devices, etc.).
Eventually, if plugged in long enough without
engine operation, the vehicle’s battery will
discharge sufficiently to degrade battery life
and/or prevent the engine from starting.

21_DT_OM_EN_USC_t.book Page 388

404SERVICING AND MAINTENANCE
ENGINE COMPARTMENT
3.6L ENGINE WITH STOP/START
1 — Motor Generator Unit Coolant Reservoir Pressure Cap 6 — Battery
2 — Engine Coolant Reservoir Pressure Cap 7 — Power Distribution Center (Fuses)
3 — Engine Oil Dipstick 8 — Washer Fluid Reservoir Cap
4 — Engine Oil Fill 9 — Engine Air Cleaner Filter
5 — Brake Fluid Reservoir

21_DT_OM_EN_USC_t.book Page 404

SERVICING AND MAINTENANCE405
5.7L ENGINE WITHOUT STOP/START
1 — Engine Air Cleaner Filter 6 — Battery
2 — Engine Coolant Pressure Cap 7 — Power Distribution Center (Fuses)
3 — Engine Oil Fill 8 — Washer Fluid Reservoir Cap
4 — Engine Oil Dipstick 9 — Engine Coolant Reservoir Cap
5 — Brake Fluid Reservoir Cap
8

21_DT_OM_EN_USC_t.book Page 405

406SERVICING AND MAINTENANCE
5.7L ENGINE WITH STOP/START
1 — Engine Air Cleaner Filter 6 — Battery
2 — Engine Coolant Pressure Cap 7 — Power Distribution Center (Fuses)
3 — Engine Oil Fill 8 — Washer Fluid Reservoir Cap
4 — Engine Oil Dipstick 9 — Engine Coolant Reservoir Cap
5 — Brake Fluid Reservoir Cap

21_DT_OM_EN_USC_t.book Page 406