2018 Ram 3500 check engine light

WARNING!(Continued)
vehicle properly parked with the engine off, fully
depress the accelerator, the brake, and the clutch
pedal (if present) to check for interference. If your
floor mat interferes with the operation of any pedal,
or is not secure to the floor, remove the floor mat
from the vehicle and place the floor mat in your
trunk.
• ONLY use the passenger ’s side floor mat on the
passenger ’s side floor area.
• ALWAYS make sure objects cannot fall or slide into
the driver ’s side floor area when the vehicle is
moving. Objects can become trapped under accelera-
tor, brake, or clutch pedals and could cause a loss of
vehicle control.
• NEVER place any objects under the floor mat (e.g.,
towels, keys, etc.). These objects could change the
position of the floor mat and may cause interference
with the accelerator, brake, or clutch pedals.
• If the vehicle carpet has been removed and re-
installed, always properly attach carpet to the floor
and check the floor mat fasteners are secure to the
vehicle carpet. Fully depress each pedal to check for
(Continued)
WARNING! (Continued)
interference with the accelerator, brake, or clutch
pedals then re-install the floor mats.
• It is recommended to only use mild soap and water
to clean your floor mats. After cleaning, always check
your floor mat has been properly installed and is
secured to your vehicle using the floor mat fasteners
by lightly pulling mat.
Periodic Safety Checks You Should Make Outside
The Vehicle
Tires
Examine tires for excessive tread wear and uneven wear
patterns. Check for stones, nails, glass, or other objects
lodged in the tread or sidewall. Inspect the tread for cuts
and cracks. Inspect sidewalls for cuts, cracks, and bulges.
Check the wheel bolts for tightness. Check the tires (includ-
ing spare) for proper cold inflation pressure.
Lights
Have someone observe the operation of brake lights and
exterior lights while you work the controls. Check turn
signal and high beam indicator lights on the instrument
panel.
5
SAFETY 281

Driving Through Water
Extreme care should be taken crossing any type of water.
Water crossings should be avoided if possible and only be
attempted when necessary, in a safe responsible manner.
You should only drive through areas which are designated
and approved. You should tread lightly and avoid damage
to the environment. You should know your vehicle’s
abilities and be able to recover it if something goes wrong.
You should never stop or shut a vehicle off when crossing
deep water unless you ingested water into the engine air
intake. If the engine stalls do not attempt to restart it.
Determine if it has ingested water first. The key to any
crossing is low and slow. You want to use first gear in 4L
(Low Range) and proceed very slowly with a constant slow
speed (3-5 mph [5–8 km/h] maximum) and light throttle.
Keep the vehicle moving; do not try to accelerate through
the crossing. After crossing any water higher than the
bottom of the axle differentials, you should inspect all of
the vehicle fluids for signs of water ingestion.
CAUTION!
Water ingestion into the axles, transmission, transfer
case, engine or vehicle interior can occur if you drive
(Continued)
CAUTION!(Continued)
too fast or through too deep of water. Water can cause
permanent damage to engine, driveline or other ve-
hicle components and your brakes will be less effec-
tive once wet and/or muddy.
• Before You Cross Any Type Of Water – As you ap-
proach any type of water you need to determine if you
can cross it safely and responsibly. If necessary, get out
and walk through the water or probe it with a stick. You
need to be sure of its depth, approach angle, current and
bottom condition. Be careful of murky or muddy waters,
check for hidden obstacles. Make sure you will not be
intruding on any wildlife and you can recover the
vehicle if necessary. The key to a safe crossing is the
water depth, current and bottom conditions. On soft
bottoms the vehicle will sink in, effectively increasing
the water level on the vehicle. Be sure to consider this
when determining the depth and the ability to safely
cross.
• Crossing Puddles, Pools, Flooded Areas Or Other
Standing Water – Puddles, pools, flooded or other
standing water areas normally contain murky or muddy
waters. These water types normally contain hidden
obstacles and make it difficult to determine an accurate
370 STARTING AND OPERATING

CAUTION!
Prolonged operation of the steering system at the end
of the steering wheel travel will increase the steering
fluid temperature and it should be avoided when
possible. Damage to the power steering pump may
occur.
Power Steering Fluid Check — 2500/3500 Models
Checking the power steering fluid level at a defined service
interval is not required. The fluid should only be checked
if a leak is suspected, abnormal noises are apparent,
and/or the system is not functioning as anticipated. Check
fluid level when the engine is cold and off. Coordinate
inspection efforts through an authorized dealer.
CAUTION!
Do not use chemical flushes in your power steering
system as the chemicals can damage your power steer-
ing components. Such damage is not covered by the
New Vehicle Limited Warranty.
WARNING!
Fluid level should be checked on a level surface and
with the engine off to prevent injury from moving
parts and to ensure accurate fluid level reading. Do not
overfill. Use only manufacturer’s recommended power
steering fluid.
If necessary, add fluid to restore to the proper indicated
level. With a clean cloth, wipe any spilled fluid from all
surfaces. Refer to “Fluids And Lubricants” in “Technical
Specifications” for further information.
FUEL SAVER TECHNOLOGY 5.7L/6.4L ENGINES
ONLY — IF EQUIPPED
This feature offers improved fuel economy by shutting off
four of the engine’s eight cylinders during light load and
cruise conditions. The system is automatic with no driver
inputs or additional driving skills required.
NOTE: This system may take some time to return to full
functionality after a battery disconnect.
394 STARTING AND OPERATING

frequent trailer towing.Refer to the “Maintenance Plan”
for the proper maintenance intervals.
NOTE: Check the automatic transmission fluid level be-
fore towing (6-speed automatic only).
Tow/Haul Mode
To reduce potential for automatic transmission overheat-
ing, activate TOW/HAUL mode when driving in hilly
areas, or select a lower gear range (using the Electronic
Range Select (ERS) shift control) on more severe grades.
Speed Control — If Equipped
• Do not use on hilly terrain or with heavy loads.
• When using the speed control, if you experience speed
drops greater than 10 mph (16 km/h), disengage until
you can get back to cruising speed.
• Use speed control in flat terrain and with light loads to
maximize fuel efficiency.
Cooling System
To reduce potential for engine and transmission overheat-
ing, take the following actions:
•City Driving
• In city traffic — while stopped, place the transmission in
NEUTRAL, but do not increase engine idle speed.
• Highway Driving
• Reduce speed.
• Air Conditioning
• Turn off temporarily.
Air Suspension System
To aid in attaching/detaching the trailer from the vehicle,
the air suspension system can be used. Refer to “Air
Suspension System” in “Starting And Operating” for fur-
ther information.
NOTE: The vehicle must remain in the engine running
position while attaching a trailer for proper leveling of the
air suspension system.
432 STARTING AND OPERATING

NOTE:When shifting out of transfer case NEUTRAL (N),
turning the engine OFF is not required, but may be helpful
to avoid gear clash. With the 8-speed automatic transmis-
sion, the engine must remain running, since turning the
engine OFF will shift the transmission to PARK (and the
transmission must be in NEUTRAL for the transfer case to
shift out of NEUTRAL).
5. Turn the engine OFF. Shift automatic transmission into PARK. On 8-speed transmissions the shifter will auto-
matically select PARK when the engine is turned off.
6. Release the brake pedal (and clutch pedal on a manual transmission).
7. Disconnect vehicle from the tow vehicle.
8. Start the engine.
9. Press and hold the brake pedal.
10. Release the parking brake.
11. Shift the transmission into gear, release the brake pedal (and clutch pedal on manual transmissions), and check
that the vehicle operates normally. NOTE:
With electronic shift transfer case:
• Steps 3 and 4 are requirements that must be met before
pushing the button to shift out of NEUTRAL (N), and
must continue to be met until the shift has been com-
pleted. If any of these requirements are not met before
pushing the button or are no longer met during the shift,
the NEUTRAL (N) indicator light will flash continu-
ously until all requirements are met or until the button is
released.
• The ignition must be in the ON/RUN mode for a shift to
take place and for the position indicator lights to be
operable. If the ignition is not in the ON/RUN mode, the
shift will not take place and no position indicator lights
will be on or flashing.
• A flashing NEUTRAL (N) position indicator light indi-
cates that shift requirements have not been met.
DRIVING TIPS
Driving On Slippery Surfaces
Acceleration
Rapid acceleration on snow covered, wet, or other slippery
surfaces may cause the driving wheels to pull erratically to
the right or left. This phenomenon occurs when there is a
6
STARTING AND OPERATING 441

Severe Duty All Models
NOTE:Change Engine Oil at 4,000 miles (6,500 km) or 350
hours of engine run time if the vehicle is operated in a
dusty and off road environment or is operated predomi-
nantly at idle, or only very low engine RPM’s. This type of
vehicle use is considered Severe Duty.
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, power steering (2500/3500 Models
Only) and automatic transmission (six-speed only) and
fill as needed
• Check function of all interior and exterior lightsMaintenance Plan
Required Maintenance
Refer to the Maintenance Plan on the following pages for
required maintenance.
At Every Oil Change Interval As Indicated By Oil
Change Indicator System:
•Change oil and filter.
• Rotate the tires. Rotate at the first sign of irregular
wear, even if it occurs before the oil indicator
system turns on.
• Inspect battery and clean and tighten terminals as
required.
• Inspect automatic transmission fluid if equipped
with dipstick.
• Inspect brake pads, shoes, rotors, drums, hoses and
park brake.
• Inspect engine cooling system protection and hoses.
• Inspect exhaust system.
• Inspect engine air cleaner if using in dusty or
off-road conditions.
• Lube the front drive shaft fitting (2500/3500 (4x4)
models only).
518 SERVICING AND MAINTENANCE

Customer Programmable Features — Uconnect
4C/4C NAV Personal Settings
Press the “Apps” button on the touchscreen then press the
“Settings” button on the touchscreen to display the settings
menu screen. In this mode the Uconnect system allows youto access programmable features that may be equipped
such as Display, Voice, Clock, Safety & Driving Assistance,
Lights, Doors & Locks, Auto-On Comfort (if equipped),
Engine Off Options, Suspension, Trailer Brake, Audio,
Phone/Bluetooth, SiriusXM Setup (if equipped), Restore
Settings, Clear Personal Data and System Information.
NOTE:
Only one category may be selected at a time.
When making a selection, press the button on the touch-
screen to enter the desired mode. Once in the desired
mode, press and release the preferred setting until a
check-mark appears next to the setting, showing that
setting has been selected. Once the setting is complete,
either press the back arrow button on the touchscreen or
the Back button on the faceplate to return to the previous
menu or press the “X” button on the touchscreen to close
out of the settings screen. Pressing the Up or Down Arrow
buttons on the touchscreen on the right side of the screen
will allow you to toggle up or down through the list of
available settings.
NOTE: All settings should be changed with the ignition in
the RUN position.
Uconnect 4C/4C NAV With 8.4–inch Display Buttons On
The Touchscreen And Buttons On The Faceplate
1 — Uconnect Buttons On The Touchscreen
2 — Uconnect Buttons On The Faceplate
10
MULTIMEDIA 633

Fluid Level Check.....................553, 554
Fluid Type ..........................553, 607
Shifting ............................306, 315
Special Additives ........................ .553
Automatic Transmission Limp Home Mode ........304
Axle Fluid ............................556, 607
Axle Lubrication .......................... .556
Back-Up .................................410
Back-Up Camera .......................... .410
Bar, Stabilizer/Sway System ...................361
Battery ...............................191, 526
Charging System Light ....................191
Keyless Key Fob Replacement ................24
Belts, Seat ............................... .279
Body Builders Guide ..........................7
Body Mechanism Lubrication ..................541
B-Pillar Location .......................... .564
Brake Assist System ........................ .206
Brake Control System, Electronic ................205
Brake Fluid .......................... .552, 607
Brake System ..........................552, 593
Fluid Check ............................552
Master Cylinder ........................ .552
Parking ...............................295 Warning Light
.......................... .190
Brake/Transmission Interlock ..................299
Bulb Replacement ..........................452
Bulbs, Light .......................... .281, 452
Cab Top Clearance Lights .....................458
Camera .................................410
Camera, Rear ............................ .410
Camper .................................152
Capacities, Fluid .......................... .603
Caps, Filler Oil (Engine) ..................... .523, 529, 530
Power Steering ..........................394
Radiator (Coolant

Pressure).................549
Carbon Monoxide Warning ................279, 600
Cargo Light ...............................79
Car Washes ...............................585
Cellular Phone ............................654
Center High Mounted Stop Light ...............457
Center Seat Storage Compartment ...............123
Changing A Flat Tire ........................468
Chart, Tire Sizing .......................... .560
Check Engine Light (Malfunction Indicator Light). . . .201
Checking Your Vehicle For Safety ...............278
Checks, Safety ............................ .278
12
INDEX 683