air condition Ram 4500 Chassis Cab 2018 Owner's Guide

•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

pressure should be increased by 3 psi (21 kPa), which
equals 1 psi (7 kPa) for every 12°F (7°C) for this outside
temperature condition.
Tire pressure may increase from 2 to 6 psi (13 to 40 kPa)
during operation. DO NOT reduce this normal pressure
build up or your tire pressure will be too low.
Tire Pressures For High Speed Operation
The manufacturer advocates driving at safe speeds and
within posted speed limits. Where speed limits or condi-
tions are such that the vehicle can be driven at high speeds,
maintaining correct tire inflation pressure is very impor-
tant. Increased tire pressure and reduced vehicle loading
may be required for high-speed vehicle operation. Refer to
your authorized tire dealer or original equipment vehicle
dealer for recommended safe operating speeds, loading
and cold tire inflation pressures.
WARNING!
High speed driving with your vehicle under maximum
load is dangerous. The added strain on your tires could
cause them to fail. You could have a serious collision.
Do not drive a vehicle loaded to the maximum capacity
at continuous speeds above 75 mph (120 km/h).
Radial Ply Tires
WARNING!
Combining radial ply tires with other types of tires on
your vehicle will cause your vehicle to handle poorly.
The instability could cause a collision. Always use
radial ply tires in sets of four. Never combine them
with other types of tires.
Tire Repair
If your tire becomes damaged, it may be repaired if it meets
the following criteria:
• The tire has not been driven on when flat.
• The damage is only on the tread section of your tire
(sidewall damage is not repairable).
• The puncture is no greater thana¼ofaninch (6 mm).
Consult an authorized tire dealer for tire repairs and
additional information.
Damaged Run Flat tires, or Run Flat tires that have
experienced a loss of pressure should be replaced immedi-
ately with another Run Flat tire of identical size and service
description (Load Index and Speed Symbol).
406 SERVICING AND MAINTENANCE

Run Flat Tires — If Equipped
Run Flat tires allow you the capability to drive 50 miles
(80 km) at 50 mph (80 km/h) after a rapid loss of inflation
pressure. This rapid loss of inflation is referred to as the
Run Flat mode. A Run Flat mode occurs when the tire
inflation pressure is of/or below 14 psi (96 kPa). Once a
Run Flat tire reaches the run flat mode it has limited
driving capabilities and needs to be replaced immediately.
A Run Flat tire is not repairable.
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.
See the tire pressure monitoring section for more informa-
tion.
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.
Refer to “Freeing A Stuck Vehicle” in “In Case Of Emer-
gency” for further information.
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.
8
SERVICING AND MAINTENANCE 407

•Any time you store your vehicle or keep it out of service
(i.e., vacation) for two weeks or more, run the air
conditioning system at idle for about five minutes in the
fresh air and high blower setting. This will ensure
adequate system lubrication to minimize the possibility
of compressor damage when the system is started again.
BODYWORK
Protection From Atmospheric Agents
Vehicle body care requirements vary according to geo-
graphic locations and usage. Chemicals that make roads
passable in snow and ice and those that are sprayed on
trees and road surfaces during other seasons are highly
corrosive to the metal in your vehicle. Outside parking,
which exposes your vehicle to airborne contaminants, road
surfaces on which the vehicle is operated, extreme hot or
cold weather and other extreme conditions will have an
adverse effect on paint, metal trim, and underbody protec-
tion.
The following maintenance recommendations will enable
you to obtain maximum benefit from the corrosion resis-
tance built into your vehicle.
What Causes Corrosion?
Corrosion is the result of deterioration or removal of paint
and protective coatings from your vehicle.
The most common causes are:
• Road salt, dirt and moisture accumulation.
• Stone and gravel impact.
• Insects, tree sap and tar.
• Salt in the air near seacoast localities.
• Atmospheric fallout/industrial pollutants.
Body And Underbody Maintenance
Cleaning Headlights
Your vehicle is equipped with plastic headlights and fog
lights that are lighter and less susceptible to stone breakage
than glass headlights.
Plastic is not as scratch resistant as glass and therefore
different lens cleaning procedures must be followed.
To minimize the possibility of scratching the lenses and
reducing light output, avoid wiping with a dry cloth. To
remove road dirt, wash with a mild soap solution followed
by rinsing.
420 SERVICING AND MAINTENANCE

WARNING!(Continued)
must be replaced after a collision if they have been
damaged (i.e., bent retractor, torn webbing, etc.).
Plastic And Coated Parts
Use Mopar Total Clean to clean vinyl upholstery.
CAUTION!
•Direct contact of air fresheners, insect repellents,
suntan lotions, or hand sanitizers to the plastic,
painted, or decorated surfaces of the interior may
cause permanent damage. Wipe away immediately.
• Damage caused by these type of products may not be
covered by your New Vehicle Limited Warranty.
Cleaning Plastic Instrument Cluster Lenses
The lenses in front of the instruments in this vehicle are
molded in clear plastic. When cleaning the lenses, care
must be taken to avoid scratching the plastic.
1.
Clean with a wet soft cloth. A mild soap solution may be
used, but do not use high alcohol content or abrasive
cleaners. If soap is used, wipe clean with a clean damp cloth.
2. Dry with a soft cloth.
Leather Parts
Mopar Total Clean is specifically recommended for leather
upholstery.
Your leather upholstery can be best preserved by regular
cleaning with a damp soft cloth. Small particles of dirt can act
as an abrasive and damage the leather upholstery and should
be removed promptly with a damp cloth. Stubborn soils can
be removed easily with a soft cloth and Mopar Total Clean.
Care should be taken to avoid soaking your leather upholstery
with any liquid. Please do not use polishes, oils, cleaning
fluids, solvents, detergents, or ammonia-based cleaners to
clean your leather upholstery. Application of a leather condi-
tioner is not required to maintain the original condition.
NOTE:If equipped with light colored leather, it tends to show
any foreign material, dirt, and fabric dye transfer more so than
darker colors. The leather is designed for easy cleaning, and
FCA recommends Mopar total care leather cleaner applied on
a cloth to clean the leather seats as needed.
CAUTION!
Do not use Alcohol and Alcohol-based and/or Ketone
based cleaning products to clean leather seats, as
damage to the seat may result.
8
SERVICING AND MAINTENANCE 423

RADIO OPERATION AND MOBILE PHONES
Under certain conditions, the mobile phone being on in
your vehicle can cause erratic or noisy performance from
your radio. This condition may be lessened or eliminated
by relocating the mobile phone antenna. This condition is
not harmful to the radio. If your radio performance does
not satisfactorily “clear” by the repositioning of the an-
tenna, it is recommended that the radio volume be turned
down or off during mobile phone operation when not
using Uconnect (if equipped).
Regulatory And Safety Information
USA/CANADA
Exposure to Radio Frequency Radiation
The radiated output power of the internal wireless radio is
far below the FCC and IC radio frequency exposure limits.
Nevertheless, the wireless radio will be used in such a
manner that the radio is 20 cm or further from the human
body.
The internal wireless radio operates within guidelines
found in radio frequency safety standards and recommen-
dations, which reflect the consensus of the scientific com-
munity.The radio manufacturer believes the internal wireless radio
is safe for use by consumers. The level of energy emitted is
far less than the electromagnetic energy emitted by wire-
less devices such as mobile phones. However, the use of
wireless radios may be restricted in some situations or
environments, such as aboard airplanes. If you are unsure
of restrictions, you are encouraged to ask for authorization
before turning on the wireless radio.
The following regulatory statement applies to all Radio
Frequency (RF) devices equipped in this vehicle:
This device complies with Part 15 of the FCC Rules and
with Industry Canada license-exempt RSS standard(s).
Operation is subject to the following two conditions:
1. This device may not cause harmful interference, and
2. This device must accept any interference received, in-
cluding interference that may cause undesired opera-
tion.
NOTE: Changes or modifications not expressly approved
by the party responsible for compliance could void the
user ’s authority to operate the equipment.
486 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

Exterior Lights......................... .69, 236
Filters Air Cleaner ............................ .368
Air Conditioning ..................... .97, 372
Engine Fuel ........................... .435
Engine Oil ......................... .368, 435
Engine Oil Disposal ...................... .368
Flashers Turn Signal ...................... .75, 158, 236
Flash-To-Pass ..............................72
Flat Tire Stowage .......................... .344
Flooded Engine Starting ..................... .243
Fluid, Brake ............................. .437
Fluid Capacities ........................... .434
Fluid Leaks .............................. .236
Fluid Level Checks Automatic Transmission ....................390
Brake ................................ .388
Power Steering ......................... .269
Fluids And Lubricants ...................... .435
Fog Lights ......................... .74, 157, 328
Fold Flat Load Floor ........................117
Folding Rear Seat ...........................43
Four-Way Hazard Flasher .....................320 Four Wheel Drive
......................... .257
Freeing A Stuck Vehicle ..................... .350
Front Axle (Differential) ..................... .392
Fuel ................................... .429
Adding .............................. .289
Additives .......................... .290, 430
Clean Air ............................. .430
Ethanol .............................. .431
Filler Cap (Gas Cap) ..................... .290
Filter ................................ .435
Gasoline .............................. .429
Light ................................ .156
Materials Added ..................... .290, 430
Methanol ............................. .431
Octane

Rating .......................... .429
Requirements .......................... .429
Tank Capacity .......................... .434
Fuses .................................. .331
Garage Door Opener (HomeLink) ............102, 108
Gas Cap (Fuel Filler Cap) .....................290
Gasoline, Clean Air ........................ .430
Gasoline, Reformulated ..................... .430
Gear Ranges ............................. .249
Gear Select Lever Override ....................349
516 INDEX