2018 Ram 4500 Chassis Cab check engine

Engine Air Cleaner Filter Installation
NOTE:Inspect and clean the housing if dirt or debris is
present before replacing the air filter element.
1. Install the air cleaner filter element into the housing assembly with the air cleaner filter inspection surface
facing downward.
2. Install the air cleaner cover onto the housing assembly locating tabs.
3. Latch the spring clips and lock the air cleaner cover to the housing assembly.
Air Conditioner Maintenance
For best possible performance, your air conditioner should
be checked and serviced by an authorized dealer at the
start of each warm season. This service should include
cleaning of the condenser fins and a performance test.
Drive belt tension should also be checked at this time.
WARNING!
•Use only refrigerants and compressor lubricants ap-
proved by the manufacturer for your air conditioning
(Continued)
WARNING! (Continued)
system. Some unapproved refrigerants are flam-
mable and can explode, injuring you. Other unap-
proved refrigerants or lubricants can cause the sys-
tem to fail, requiring costly repairs. Refer to
Warranty Information Book, for further warranty
information.
• The air conditioning system contains refrigerant un-
der high pressure. To avoid risk of personal injury or
damage to the system, adding refrigerant or any
repair requiring lines to be disconnected should be
done by an experienced technician.
CAUTION!
Do not use chemical flushes in your air conditioning
system as the chemicals can damage your air condition-
ing components. Such damage is not covered by the
New Vehicle Limited Warranty.
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SERVICING AND MAINTENANCE 371

To minimize the possibility of catalytic converter damage:
•Do not interrupt the ignition when the transmission is in
gear and the vehicle is in motion.
• Do not try to start the vehicle by pushing or towing the
vehicle.
• Do not idle the engine with any ignition components
disconnected or removed, such as when diagnostic
testing, or for prolonged periods during very rough idle
or malfunctioning operating conditions.
Cooling System
WARNING!
You or others can be badly burned by hot engine
coolant (antifreeze) or steam from your radiator. If you
see or hear steam coming from under the hood, do not
open the hood until the radiator has had time to cool.
Never try to open a cooling system pressure cap when
the radiator is hot.
Engine Coolant Checks
Check the engine coolant (antifreeze) protection every 12
months (before the onset of freezing weather, where appli-
cable). If the engine coolant (antifreeze) is dirty or rusty in appearance, the system should be drained, flushed and
refilled with fresh coolant. Check the front of the A/C
condenser (if equipped) or radiator for any accumulation
of bugs, leaves, etc. If dirty, clean by gently spraying water
from a garden hose vertically down the face of the A/C
condenser (if equipped) or the back of the radiator core.
Check the engine cooling system hoses for brittle rubber,
cracking, tears, cuts and tightness of the connection at the
coolant recovery bottle and radiator. Inspect the entire
system for leaks.
DO NOT REMOVE THE COOLANT PRESSURE CAP
WHEN THE COOLING SYSTEM IS HOT.
Cooling System — Drain, Flush And Refill
NOTE:
Some vehicles require special tools to add coolant
properly. Failure to fill these systems properly could lead to
severe internal engine damage. If any coolant is needed to
be added to the system please contact your local autho-
rized dealer.
If the engine coolant (antifreeze) is dirty or contains visible
sediment, have an authorized dealer clean and flush with
OAT coolant (antifreeze) (conforming to MS.90032).
Refer to the “Maintenance Plan” in this section for the
proper maintenance intervals.
384 SERVICING AND MAINTENANCE

Disposal Of Used Coolant
Used ethylene glycol-based coolant (antifreeze) is a regu-
lated substance requiring proper disposal. Check with your
local authorities to determine the disposal rules for your
community. To prevent ingestion by animals or children,
do not store ethylene glycol-based coolant in open contain-
ers or allow it to remain in puddles on the ground. If
ingested by a child or pet, seek emergency assistance
immediately. Clean up any ground spills immediately.
Checking Coolant Level — 6.4L Engine
The level of the coolant in the pressurized coolant bottle
should be between the “MIN” and “MAX” range on the
bottle when the engine is cold.
The radiator normally remains completely full, so there is
no need to remove the cap unless checking for coolant
freeze point or replacing engine coolant (antifreeze). Ad-
vise your service attendant of this. As long as the engine
operating temperature is satisfactory, the coolant bottle
need only be checked once a month. When additional
engine coolant (antifreeze) is needed to maintain the
proper level, it should be added to the coolant bottle. Do
not overfill.
Points To Remember
NOTE:When the vehicle is stopped after a few miles/
kilometers of operation, you may observe vapor coming
from the front of the engine compartment. This is normally
a result of moisture from rain, snow, or high humidity
accumulating on the radiator and being vaporized when
the thermostat opens, allowing hot engine coolant (anti-
freeze) to enter the radiator.
If an examination of your engine compartment shows no
evidence of radiator or hose leaks, the vehicle may be
safely driven. The vapor will soon dissipate.
• Do not overfill the coolant expansion bottle.
• Check the coolant freeze point in the radiator and in the
coolant expansion bottle. If engine coolant (antifreeze)
needs to be added, the contents of the coolant expansion
bottle must also be protected against freezing.
• If frequent engine coolant (antifreeze) additions are
required, the cooling system should be pressure tested
for leaks.
•
Maintain engine coolant (antifreeze) concentration at a
minimum of 50% OAT coolant (conforming to MS.90032)
and distilled water for proper corrosion protection of your
engine which contains aluminum components.
8
SERVICING AND MAINTENANCE 387

•Make sure that the coolant expansion bottle overflow
hoses are not kinked or obstructed.
• Keep the front of the radiator clean. If your vehicle is
equipped with air conditioning, keep the front of the
condenser clean.
• Do not change the thermostat for Summer or Winter
operation. If replacement is ever necessary, install ONLY
the correct type thermostat. Other designs may result in
unsatisfactory engine coolant (antifreeze) performance,
poor gas mileage, and increased emissions.
Brake System
In order to assure brake system performance, all brake
system components should be inspected periodically. Refer
to the “Maintenance Plan” in this section for the proper
maintenance intervals.
WARNING!
Riding the brakes can lead to brake failure and possi-
bly 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.
Fluid Level Check — Brake Master Cylinder
The fluid level of the master cylinder should be checked
when performing under the hood service or immediately if
the brake system warning lamp indicates system failure.
The brake master cylinder has a translucent plastic reser-
voir. On the outboard side of the reservoir, there is a
“MAX” mark and a “MIN” mark. The fluid level must be
kept within these two marks. Do not add fluid above the
MAX mark because leakage may occur at the cap.
With disc brakes the fluid level can be expected to fall as
the brake linings wear. However, an unexpected drop in
fluid level may be caused by a leak and a system check
should be conducted.
Refer to “Fluids And Lubricants” in “Technical Specifica-
tions” for further information.
WARNING!
• Use only manufacturer’s recommended brake fluid.
Refer to “Fluids And Lubricants” in “Technical
Specifications” for further information. Using the
wrong type of brake fluid can severely damage your
(Continued)
388 SERVICING AND MAINTENANCE

Special Additives
The manufacturer strongly recommends against using any
special additives in the transmission. Automatic Transmis-
sion Fluid (ATF) is an engineered product and its perfor-
mance may be impaired by supplemental additives. There-
fore, do not add any fluid additives to the transmission.
The only exception to this policy is the use of special dyes
for diagnosing fluid leaks. Avoid using transmission seal-
ers as they may adversely affect seals.
CAUTION!
Do not use chemical flushes in your transmission as
the chemicals can damage your transmission compo-
nents. Such damage is not covered by the New Vehicle
Limited Warranty.
Fluid Level Check
Check the fluid level when the engine is fully warmed up
and the transmission fluid is at normal operating tempera-
ture. Driving with an improper fluid level will greatly
reduce the life of the transmission and of the fluid. Check
the fluid level whenever the vehicle is serviced.
Fluid Level Check — Procedure
It is best to check the fluid level when the transmission is
at normal operating temperature (170-180°F / 77-82°C for
66RFE transmission, or 158–176°F / 70–80°C for AS66RC
transmission). This normally occurs after at least 15 miles
(25 km) of driving. At normal operating temperature the
fluid cannot be held comfortably between the fingertips.
You can read the transmission sump temperature in the
instrument cluster display (refer toInstrument Cluster
Display” in “Getting To Know Your Instrument Panel” for
further information).
Use the following procedure to check the transmission
fluid level properly:
1. Monitor the transmission temperature using the instru- ment cluster display, and operate the vehicle as required
to reach the normal operating temperature. If the trans-
mission is not functioning properly, or the vehicle
cannot be driven, see the NOTE and CAUTION below
about checking the fluid level at colder temperatures.
2. Park the vehicle on level ground.
3. Run the engine at normal idle speed for at least 60 seconds, and leave the engine running for the rest of this
procedure.
390 SERVICING AND MAINTENANCE

4. Fully apply the parking brake and press the brake pedal.
5. Place the gear selector momentarily into each gearposition (allowing time for the transmission to fully
engage in each position), ending with the transmission
in PARK.
6. Wipe the area around the dipstick clean to prevent dirt from entering the transmission.
7. Remove the dipstick, wipe it clean and reinsert it until seated.
8. Remove the dipstick again and note the fluid level on both sides. The fluid level reading is only valid if there
is a solid coating of oil on both sides of the dipstick.
Note that the holes in the dipstick will be full of fluid if
the actual level is at or above the hole. The fluid level
should be between the “HOT” (upper) reference holes
on the dipstick at normal operating temperature. If the
fluid level is low, add fluid through the dipstick tube to
bring it to the proper level. Do not overfill.Use ONLY
the specified fluid (see Fluids, Lubricants, and Genuine
Parts for fluid specifications). After adding any quan-
tity of oil through the dipstick tube, wait a minimum of
two minutes for the oil to fully drain into the transmis-
sion before rechecking the fluid level. NOTE:If it is necessary to check the transmission
belowthe
operating temperature, the fluid level should be between the
two “COLD” (lower) holes on the dipstick with the fluid at
60-70°F / 16-21°C for 66RFE transmission, or 68-86°F /
20-30°C for AS66RC transmission. Only use the COLD region
of the dipstick as a rough reference when setting the fluid
level after a transmission service or fluid change. Re-check
the fluid level, and adjust as required, once the transmission
reaches normal operating temperature.
CAUTION!
If the fluid temperature is below 50°F (10°C) it may not
register on the dipstick. Do not add fluid until the
temperature is elevated enough to produce an accurate
reading. Run the engine at idle, in PARK, to warm the
fluid.
9. Reinsert the dipstick. Check for leaks. Release the park- ing brake.
NOTE:
To prevent dirt and water from entering the transmis-
sion after checking or replenishing fluid, make sure that the
dipstick cap is properly reseated. It is normal for the dipstick
cap to spring back slightly from its fully seated position, as
long as its seal remains engaged in the dipstick tube.
8
SERVICING AND MAINTENANCE 391

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 you
to 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, 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 464 MULTIMEDIA

Adding Engine Coolant (Antifreeze).............385
Adding Fuel ............................. .289
Additives, Fuel ........................ .290, 430
Adjust Down .............................. .46, 48
Forward ............................ .46, 48
Rearward ........................... .46, 48
Up ................................ .46, 48
Adjustable Pedals ...........................59
Air Bag Air Bag Operation ....................... .200
Air Bag Warning Light .....................197
Enhanced Accident Response .............206, 355
Event Data Recorder (EDR) .................355
If A Deployment Occurs ....................205
Knee Impact Bolsters ..................... .201
Maintaining Your Air Bag System .............207
Transporting Pets ....................... .233
Air Bag Light ...................... .150, 197, 234
Air Bag Maintenance ....................... .207
Air Cleaner, Engine (Engine Air Cleaner Filter) ......368
Air Conditioner Maintenance ..................371
Air Conditioning ............................82
Air Conditioning Filter ....................97, 372
Air Conditioning, Operating Tips ................97Air Conditioning Refrigerant
...............371, 372
Air Conditioning System ...................96, 371
Air Filter ............................... .368
Air Pressure, Tires ......................... .405
Alarm, Panic ...............................22
Alarm (Security Alarm) ....................33, 151
Alarm System (Security Alarm) .................33
Alterations/Modifications, Vehicle ................7
Antifreeze (Engine Coolant) ...................385
Capacities ............................. .434
Disposal .............................. .387
Anti-Lock Brake System (ABS) .................164
Anti-Lock Warning Light .....................156
Ashtray ................................ .127
Assist,

Hill Start .......................... .166
Audio Systems (Radio) ...................... .441
Auto Down Power Windows ...................99
Automatic Door Locks ........................40
Automatic Headlights ........................72
Automatic High Beams .......................71
Automatic Temperature Control (ATC) ............96
Automatic Transmission Adding Fluid .......................... .391
Fluid And Filter Changes ...................392
Fluid Level Check .....................389, 390
512 INDEX