service schedule RAM 1500 2021 Owners Manual

288MULTIMEDIA
(Continued)
(Continued)
Requirements

This feature is available only on vehicles sold
in the US or Canada.
Vehicle must be properly equipped with the
SiriusXM Guardian™ system. Vehicle must be
registered with SiriusXM Guardian™ and
have an active subscription that includes the
applicable feature.
Vehicle must have an operable LTE (voice/
data) or 3G or 4G (data) network connection
compatible with your device.
Vehicle must be powered in the ON/RUN or
ACC (Accessory) position with a properly func -
tioning electrical system.
WARNING!
Never place anything on or near the
vehicle’s LTE (voice/data) or 3G or 4G
(data) and GPS antennas. You could
prevent LTE (voice/data) or 4G (data) and
GPS signal reception, which can prevent
your vehicle from placing an emergency
call.
Do not add any aftermarket electrical equip -
ment to the vehicle’s electrical system. This
may prevent your vehicle from sending a
signal to initiate an emergency call. To avoid
interference that can cause the SOS Call
system to fail, never add aftermarket equip -
ment (e.g., two-way mobile radio, CB radio,
data recorder, etc.) to your vehicle’s elec -
trical system or modify the antennas on your
vehicle. IF YOUR VEHICLE LOSES POWER
FOR ANY REASON (INCLUDING DURING OR
AFTER AN ACCIDENT), NEITHER THE UCON-
NECT APPS NOR THE SIRIUSXM
GUARDIAN™ SERVICES WILL OPERATE.
The Occupant Restraint Controller (ORC)
turns on the Air Bag Warning Light on the
instrument panel if a malfunction in any part
of the air bag system is detected. If the Air Bag
Warning Light is illuminated, the air bag
system may not be working properly and the
SOS Call system may not be able to send a
signal to the SiriusXM Guardian™ Customer
Care center. If the Air Bag Warning Light is illu -
minated, have an authorized dealer service
your vehicle immediately.
WARNING! (Continued)
Ignoring the Rearview Mirror Light could
mean you will not have SOS Call services if
needed. If the Rearview Mirror Light is illu -
minated, have an authorized dealer service
the SOS Call system immediately.
If anyone in the vehicle could be in danger
(e.g., fire or smoke is visible, dangerous
road conditions or location), do not wait for
voice contact from a SiriusXM Guardian™
Customer Care agent. All occupants should
exit the vehicle immediately and move to a
safe location.
Failure to perform scheduled maintenance
and regular inspection of your vehicle may
result in vehicle damage, accident or injury.
WARNING! (Continued)

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395
SERVICING AND MAINTENANCE
SCHEDULED SERVICING — GASOLINE
ENGINE
Your vehicle is equipped with an automatic oil
change indicator system. The oil change
indicator system will remind you that it is time to
take your vehicle in for scheduled maintenance.
Based on engine operation conditions, the oil
change indicator message will illuminate. This
means that service is required for your vehicle.
Operating conditions such as frequent
short-trips, trailer tow, and extremely hot or cold
ambient temperatures will influence when the
“Oil Change Required” message is displayed.
Severe operating conditions can cause the
change oil message to illuminate as early as
3,500 miles (5,600 km) since last reset. Have
your vehicle serviced as soon as possible,
within the next 500 miles (805 km).
An authorized dealer will reset the oil change
indicator message after completing the
scheduled oil change. If a scheduled oil change
is performed by someone other than an authorized dealer, the message can be reset by
referring to the steps described under
Instrument Cluster Display Ú
page 114.
NOTE:
Under no circumstances should oil change
intervals exceed 10,000 miles (16,000 km),
12 months or 350 hours of engine run time,
whichever comes first. The 350 hours of engine
run or idle time is generally only a concern for
fleet customers.
Severe Duty All Models
NOTE:
Vehicles that are operated in a dusty and
off-road environment, or predominately at idle
or very low engine RPM are known as Severe
Duty vehicles. It is recommended that you
change the engine oil at 4,000 miles
(6,500 km) or 350 hours of engine run time.
Once A Month Or Before A Long Trip:
Check engine oil level.
Check windshield washer fluid level.
Check tire pressure and look for unusual
wear or damage. Rotate tires at the first sign
of irregular wear, even if it occurs before the
oil indicator system turns on.
Check the fluid levels of the coolant reservoir,
brake master cylinder, and fill as needed.
Check function of all interior and exterior
lights.
MAINTENANCE PLAN
Refer to the Maintenance Plan for required
maintenance. More frequent maintenance may
be needed in severe conditions, such as dusty
areas and very short trip driving. In some
extreme conditions, additional maintenance
not specified in the maintenance schedule may
be required.
8

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SERVICING AND MAINTENANCE399
SCHEDULED SERVICING — DIESEL ENGINE
Your vehicle is equipped with an automatic oil
change indicator system. The oil change
indicator system will remind you that it is time to
take your vehicle in for scheduled maintenance. Based on engine operation conditions, the oil
change indicator message will illuminate. This
means that service is required for your vehicle.
Operating conditions such as frequent
short-trips, trailer tow, extremely hot or cold
ambient temperatures will influence when the
“Oil Change Required” message is displayed.
Severe Operating Conditions will cause the
change oil message to illuminate more
frequently. Have your vehicle serviced as soon
as possible, within the next 500 miles
(805 km).
An authorized dealer will reset the oil change
indicator message after completing the
scheduled oil change. If a scheduled oil change
is performed by someone other than an
authorized dealer, the message can be reset by
referring to the steps described under
Instrument Cluster Display Ú
page 114.NOTE:
Under no circumstances should oil change
intervals exceed 10,000 miles (16,000 km) or
12 months, whichever comes first.
Once A Month Or Before A Long Trip:
Check engine oil level
Check windshield washer fluid level
Check the tire inflation pressures and look
for unusual wear or damage
Check the fluid levels of the coolant reservoir,
brake master cylinder, and power steering,
and fill as needed
Check function of all interior and exterior
lights
WARNING!
You can be badly injured working on or
around a motor vehicle. Do only service
work for which you have the knowledge and
the right equipment. If you have any doubt
about your ability to perform a service job,
take your vehicle to a competent mechanic.
Failure to properly inspect and maintain
your vehicle could result in a component
malfunction and effect vehicle handling
and performance. This could cause an acci
-
dent.
8

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452SERVICING AND MAINTENANCE
limited driving capabilities and needs to be
replaced immediately. A Run Flat tire is not
repairable. When a Run Flat tire is changed
after driving with underinflated tire condition,
please replace the TPM sensor as it is not
designed to be reused when driven under Run
Flat mode 14 psi (96 kPa) condition.
NOTE:
TPM Sensor must be replaced after driving the
vehicle on a flat tire condition.
It is not recommended driving a vehicle loaded
at full capacity or to tow a trailer while a tire is in
the Run Flat mode.
For more information Úpage 327.
Tire Spinning
When stuck in mud, sand, snow, or ice
conditions, do not spin your vehicle's wheels
above 30 mph (48 km/h) or for longer than
30 seconds continuously without stopping.
For further information Ú page 391.
Tread Wear Indicators
Tread wear indicators are in the original
equipment tires to help you in determining
when your tires should be replaced.

Tire Tread
These indicators are molded into the bottom of
the tread grooves. They will appear as bands
when the tread depth becomes a 1/16 of an
inch (1.6 mm). When the tread is worn to the
tread wear indicators, the tire should be
replaced.
For further information Ú
page 453.
Life Of Tire
The service life of a tire is dependent upon
varying factors including, but not limited to:
Driving style
Tire pressure - Improper cold tire inflation
pressures can cause uneven wear patterns
to develop across the tire tread. These
abnormal wear patterns will reduce tread life,
resulting in the need for earlier tire replace -
ment
Distance driven
Performance tires, tires with a speed rating of
V or higher, and Summer tires typically have
a reduced tread life. Rotation of these tires
per the vehicle scheduled maintenance is
highly recommended
WARNING!
Fast spinning tires can be dangerous. Forces
generated by excessive wheel speeds may
cause tire damage or failure. A tire could
explode and injure someone. Do not spin your
vehicle's wheels faster than 30 mph (48 km/h)
for more than 30 seconds continuously when
you are stuck, and do not let anyone near a
spinning wheel, no matter what the speed.
1 — Worn Tire
2 — New Tire

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TECHNICAL SPECIFICATIONS471
FUEL REQUIREMENTS – DIESEL ENGINE
Federal law requires that you must fuel this
vehicle with Ultra Low Sulfur Highway Diesel
fuel (15 ppm Sulfur maximum) and prohibits
the use of Low Sulfur Highway Diesel fuel
(500 ppm Sulfur maximum) to avoid damage to
the emissions control system.
Use good quality diesel fuel from a reputable
supplier in your vehicle. For most year-round
service, No. 2 diesel fuel meeting ASTM
(formerly known as the American Society for
Testing and Materials) specification D-975
Grade S15 will provide good performance. If the
vehicle is exposed to extreme cold (below 20°F
or -7°C), or is required to operate at
colder-than-normal conditions for prolonged
periods, use Climatized Number 2 diesel fuel or
dilute the Number 2 diesel fuel with 50%
Number 1 diesel fuel. This will provide better
protection from fuel gelling or wax-plugging of
the fuel filters. Diesel fuel is seldom completely free of water.
To prevent fuel system trouble, drain the
accumulated water from the fuel/water
separator filter using the fuel/water separator
drain provided on the fuel filter housing. If you
buy good quality fuel and follow the cold
weather advice above, fuel conditioners should
not be required in your vehicle. If available in
your area, a high cetane “premium” diesel fuel
may offer improved cold-starting and warm-up
performance.
DIESEL FUEL SPECIFICATIONS
This diesel engine has been developed to take
advantage of the high energy content and
generally lower cost Number 2 Ultra Low Sulfur
diesel fuel or Number 2 Ultra Low Sulfur
Climatized diesel fuels.
NOTE:
If you accidentally fill the fuel tank with gaso
-
line on your diesel vehicle, do not start the
engine. Damage to the engine and fuel
system could occur. Please call an autho -
rized dealer for service.
A maximum blend of 5% biodiesel meeting
ASTM specification D-975 may be used with
your diesel engine without any adjustments
to regular service schedules.
Commercially available fuel additives are not
necessary for the proper operation of your
diesel engine.
Number 1 Ultra Low Sulfur diesel fuel should
only be used where extended arctic condi -
tions (-10°F or -23°C) exist.
WARNING!
Do not use alcohol or gasoline as a fuel
blending agent. They can be unstable under
certain conditions and hazardous or
explosive when mixed with diesel fuel.
CAUTION!
If the “Water in Fuel Indicator Light” remains
on, DO NOT START engine before you drain
the water from the fuel filter(s) to avoid
engine damage Ú page 412.9

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487
J
Jack Location
................................................. 377Jump Starting................................................ 386
K
Key Fob Programming Additional Key Fobs
.............. 20Key Fob Battery Service (Remote Keyless
Entry)............................................................... 18Key Fob Programming (Remote Keyless
Entry)............................................................... 20Keyless Enter-N-Go................................. 28, 143Passive Entry............................................... 28Keys................................................................. 17
L
Lane Change And Turn Signals........................ 55Lane Change Assist......................................... 55LaneSense.................................................... 199Lap/Shoulder Belts....................................... 336Latches.......................................................... 371Hood........................................................... 84Lead Free Gasoline........................................ 468Leaks, Fluid................................................... 371Life Of Tires................................................... 452Light Bulbs........................................... 371, 437
Lights............................................................ 371Air Bag.................................... 126, 342, 369Brake Assist Warning............................... 314Brake Warning.......................................... 126Bulb Replacement.................................... 437Cargo........................................................... 56Center Mounted Stop............................... 442Courtesy/Reading....................................... 57Cruise....................................................... 136Daytime Running......................................... 53Electronic Stability Program (ESP)Indicator............................................... 128Exterior...............................................52, 371Fog........................................................... 441Hazard Warning Flasher........................... 373Headlights............................................ 52, 54High Beam................................................... 53High Beam/Low Beam Select...................... 53Hill Descent Control Indicator................... 315Illuminated Entry......................................... 58Interior......................................................... 57Lights On Reminder..................................... 55Low Fuel................................................... 131Malfunction Indicator (Check Engine)....... 130Park.......................................................... 135Passing........................................................ 54
Seat Belt Reminder.................................. 126Security Alarm.......................................... 127Service...................................................... 437Traction Control........................................ 314Turn Signals............55, 136, 371, 439, 441Warning Instrument ClusterDescriptions................................ 128, 136Limited-Slip Differential....................... 174, 427Load Shed Battery Saver Mode..................... 125Load Shed Battery Saver On......................... 125Load Shed Electrical Load Reduction........... 125Load Shed Intelligent Battery Sensor............ 125Loading Vehicle............................................. 213Tires.......................................................... 447LocksAutomatic Door............................................30Child Protection...........................................31Power Door..................................................28Low Tire Pressure System............................. 327Lubrication, Body.......................................... 418Lug Nuts........................................................ 467Lug Nuts/Bolts.............................................. 467
M
Maintenance.............................................81, 84Maintenance Free Battery............................ 409Maintenance Schedule............... 395, 399, 40011

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