2018 Ram 3500 service indicator

If the vehicle experiences a sudden loss of
engine power while being driven in heavy
snow or rain, or when plowing snow, and/or
the “SERVICE AIR FILTER” message is dis-
played on the instrument cluster along with a
chime that repeats every 60 seconds, visually
inspect the air filter for snow/ice build up or
extreme water saturation. If the air filter is
not damaged, remove all snow/ice and rein-
stall air filter. If the air filter is damaged,
replace filter element.
NOTE:
The air filter housing contains a Mass Air
Flow sensor. This sensor is critical to proper
engine operation and component longevity.
Any damage or modification to this sensor
could result in major engine and/or exhaust
aftertreatment damage. We recommend you
use Mopar brand parts.
Even though your vehicle is equipped with an
Air Filter Monitor, a visual inspection of the
air cleaner filter element is recommended
every 15,000 miles (24,000km) or
12 months – whichever occurs first.Under nocircumstances should the air cleaner filter ele-
ment exceed 30,000 miles (48,000 km) or
24 months, whichever comes first.
CAUTION!
Many aftermarket performance air filter
elements do not adequately filter the air
entering the engine. Use of such filters can
severely damage your engine.
Draining Fuel/Water Separator
Filter
There are two fuel filter assemblies. One is
located on the driver's side of the engine. The
best access to this water drain valve is from
under the hood. The second one is on the
under body, located in front of the rear axle
above the drive shaft on pick-up models. The
Chassis Cab models second filter location is
on the frame behind the front axle. The best
access to this water drain valve is from under
the vehicle.
CAUTION!
• Do not drain the fuel/water separator
filter when the engine is running.
• Diesel fuel will damage blacktop paving
surfaces. Drain the filter into an appro-
priate container.
If water is detected in the water separator
while the engine is running, or while the
ignition switch is in the ON position, the
“Water In Fuel Indicator Light” will illumi-
nate and an audible chime will be heard five
times. At this point you should stop the
engine and drain the water from both of the
filters.
CAUTION!
If the “Water In Fuel Indicator Light” re-
mains on, DO NOT START the engine be-
fore you drain water from the fuel filters to
avoid engine damage.
If the “Water In Fuel Indicator Light” comes
on and a single chime is heard while you are
driving, or with the ignition switch in the ON
253

position, there may be a problem with your
water separator wiring or sensor. See your
authorized dealer for service.
Upon proper draining of the water from both
fuel filters, the “Water In Fuel Indicator
Light” will remain illuminated for approxi-
mately 10 seconds. If the water was drained
while the engine was running, the “Water In
Fuel Indicator Light” may remain on for ap-
proximately three minutes.
NOTE:
Care should be taken in disposing of used
fluids from your vehicle. Used fluids, indis-
criminately discarded, can present a problem
to the environment. Contact an authorized
dealer, service station, or government agency
for advice on recycling programs and for
where used fluids and filters can be properly
disposed of in your area.
Drain the fuel/water separator filters when
the “Water In Fuel Indicator Light” is ON.
Within 10 minutes of vehicle shutdown, turn
the engine mounted filter drain valve (located
on the side of the filter assembly) counter-
clockwise 1/4 turn, and turn the under body
mounted filter drain valve (located on thebottom of the filter assembly) counterclock
wise 1 full turn. Then turn the ignition switch
to the ON position, and allow any accumu-
lated water to drain. Leave the drain valve
open until all water and contaminants have
been removed. When clean fuel is visible,
close the drain valves by turning them fully
clockwise, and turn the ignition switch to
OFF.
If more than a couple ounces/milliliters of
fuel have been drained, follow the directions
for “Priming If The Engine Has Run Out Of
Fuel.”
Engine Mounted Fuel Filter
Replacement
NOTE:
• Using a fuel filter that does not meet the
manufacturer's filtration and water separat-
ing requirements can severely impact fuel
system life and reliability.
• The engine mounted filter housing is equipped with a No-Filter-No-Run (NFNR)
feature. Engine will not run if:
1. No filter is installed. 2. Inferior/Non-approved filter is used.
Use of OEM filter is required to ensure
vehicle will run.
CAUTION!
• Diesel fuel will damage blacktop pavingsurfaces. Drain the filter into an appro-
priate container.
• Do not prefill the fuel filter when install-
ing a new fuel filter. There is a possibility
debris could be introduced into the fuel
filter during this action. It is best to
install the filter dry and allow the in-tank
lift pump to prime the fuel system.
1. Ensure engine is turned off.
2. Place drain pan under the fuel filter drain hose.
3. Open the water drain valve 1/4 turn coun- terclockwise and completely drain fuel
and water into the approved container.
4. Close the water drain valve.
5. Remove lid using a socket or strap wrench. Rotate counterclockwise for re-
moval. Remove used o-ring and discard it.
SERVICING AND MAINTENANCE
254

Tread Wear Indicators
Tread wear indicators are in the original
equipment tires to help you in determining
when your tires should be replaced.
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. Refer to “Replacement
Tires” in this section for further information.
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 inflationpressures can cause uneven wear patterns
to develop across the tire tread. These ab-
normal 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 mainte-
nance is highly recommended.
WARNING!
Tires and the spare tire should be replaced
after six years, regardless of the remaining
tread. Failure to follow this warning can
result in sudden tire failure. You could lose
control and have a collision resulting in
serious injury or death. Keep dismounted tires in a cool, dry place
with as little exposure to light as possible.
Protect tires from contact with oil, grease,
and gasoline.
Replacement Tires
The tires on your new vehicle provide a bal-
ance of many characteristics. They should be
inspected regularly for wear and correct cold
tire inflation pressures. The manufacturer
strongly recommends that you use tires
equivalent to the originals in size, quality and
performance when replacement is needed.
Refer to the paragraph on “Tread Wear Indi-
cators” in this section. Refer to the Tire and
Loading Information placard or the Vehicle
Certification Label for the size designation of
your tire. The Load Index and Speed Symbol
for your tire will be found on the original
equipment tire sidewall.
See the Tire Sizing Chart example found in
the “Tire Safety Information” section of this
manual for more information relating to the
Load Index and Speed Symbol of a tire.
Tire Tread
1 — Worn Tire
2 — New Tire
267

AirBag ............76, 104, 135
Automatic Headlights..........33
Battery Saver ...............32
Brake Warning ..............76
Bulb Replacement ...........202
Cargo ....................34
Cruise .................83, 84
Daytime Running ............32
Dimmer Switch, Headlight .......32
Engine Temperature Warning .....77
Exterior ..................136
Fog .....................82
Hazard Warning Flasher ........202
Headlights .................32
Headlights On Reminder ........32
Headlight Switch .............32
High Beam ................32
High Beam/Low Beam Select .....32
Instrument Cluster ............32
Lights On Reminder ...........32
Low Fuel ..................81
Malfunction Indicator (Check Engine) .78
Park ....................83
Passing ..................32
Seat Belt Reminder ...........76
Security Alarm ..............77
Service ..................202 Tire Pressure Monitoring (TPMS) .79, 88
Turn Signal
.......32, 33, 83, 136
Warning (Instrument Cluster
Description) .............77, 83
Loading Vehicle Tires ...................261
Low Tire Pressure System ..........88
Lug Nuts ...................276
Maintenance Plan ..........235, 239
Maintenance Schedule .......230, 234, 237, 239
Malfunction Indicator Light (Check Engine) ...............78
Manual, Service ...............355
Manual Transmission Lubricant Selection ..........282
Memory Feature (Memory Seat) ......22
Memory Seat ..................22
Memory Seats And Radio ..........22
Mirrors .....................31
Memory ..................22
Monitor, Tire Pressure System .......88
Mopar .....................287
Mopar

Accessories .............287
Multi-Function Control Lever ........32Navigation
...........327, 329, 330
Navigation System (Uconnect GPS) . . .179
New Vehicle Break-In Period . . . .153, 154
Occupant Restraints .............93
Oil Change Indicator ............238
Oil, Engine ...........280, 283, 285
Capacity ..............278, 279
Filter ............280, 283, 285
Pressure Warning Light .........77
Recommendation ...........278
Viscosity .................278
Oil Pressure Light ...............77
Onboard Diagnostic System .........84
Operating Precautions ............84
Overheating, Engine ............220
Owner's Manual (Operator Manual) . . .355
Panic Alarm ..................15
ParkSense System, Rear ..........179
Passive Entry .................19
Pedals, Adjustable ..............30
Perform Service Indicator, Reset .....239
Personalized Menu Bar ...........309
Pets ......................133
Phone, Hands-Free (Uconnect) ......332
Phone (Pairing) ...............334
INDEX
360

Phone (Uconnect)..............332
Pickup Box ..............57, 59, 63
Placard, Tire And Loading Information .261
Power Distribution Center (Fuses) ......203
Outlet (Auxiliary Electrical
Outlet) ................55, 56
Sunroof ..................49
Power Steering Fluid ............282
Pregnant Women And Seat Belts .....101
Pretensioners Seat Belts ................102
Radial Ply Tires ...............266
Radio Presets ........293, 296, 301, 310
Radio 3.0 ...................292
Radio Frequency General Information ......16, 18, 21
Radio Operation ...............300
Radio Screens ................306
Radio (Sound Systems) ..........300
Rear Cargo Area Utility Rails ........62
Rear ParkSense System ..........179
Rear Seat, Folding ..............22
Recreational Towing .............196 Shifting Into Transfer Case
Neutral (N)
...............198
Shifting Out Of Transfer Case
Neutral (N) ...............199
Release, Hood .................50
Reminder, Lights On .............32
Reminder, Seat Belt .............94
Remote Keyless Entry ............15
Panic Alarm ................15
Remote Starting Exit Remote Start Mode ........18
Replacement Bulbs .............202
Replacement Tires .............267
Reporting Safety Defects ..........354
Resetting Perform Service Indicator . . .239
Restraint, Head ................27
Restraints, Child ...............115
Safety Checks Inside Vehicle .......134
Safety Checks Outside Vehicle ......136
Safety Defects, Reporting .........354
Safety, Exhaust Gas .............134
Safety
Information, Tire ..........257
Safety Tips ..................134
Schedule, Maintenance .......230, 234
SD Card Port .................325 Seat Belt
Adjustable Upper Shoulder Belt
Anchorage .................98
Automatic Locking Retractor (ALR) .102
Energy Management Feature .....102
Lap/Shoulder Belt Operation ......97
Lap/Shoulder Belt Untwisting .....98
Pregnant Women ............101
Seat Belt Extender ...........101
Seat Belt Pretensioner ........102
Seat Belt Reminder ............94
Seat Belt Reminder ..............94
Seat Belts ................94, 134
Adjustable Shoulder Belt ........98
Adjustable Upper Shoulder
Anchorage .................98
Child Restraint .............115
Extender .................101
Front Seat ..............94, 97
Inspection ................134
Operating Instructions .........97
Pregnant Women ............101
Pretensioners ..............102
Reminder .................76
Untwisting Procedure ..........98
Seats ......................22
Adjustment ................22
361