engine Ram 4500 Chassis Cab 2018 Workshop Manual

CAUTION!
• Then, during the first 500 miles(805 km) that a trailer is towed, do not
drive over 50 mph (80 km/h) and do not
make starts at full throttle. This helps
the engine and other parts of the vehicle
wear in at the heavier loads.
Perform the maintenance listed in the
“Scheduled Servicing”. Refer to “Scheduled
Servicing” in “Servicing And Maintenance”
for the proper maintenance intervals. When
towing a trailer, never exceed the GAWR or
GCWR ratings.
WARNING!
Improper towing can lead to a collision.
Follow these guidelines to make your
trailer towing as safe as possible:
• Make certain that the load is secured in the trailer and will not shift during travel.
When trailering cargo that is not fully
secured, dynamic load shifts can occur
that may be difficult for the driver to
WARNING!
control. You could lose control of your
vehicle and have a collision.
• When hauling cargo or towing a trailer,
do not overload your vehicle or trailer.
Overloading can cause a loss of control,
poor performance or damage to brakes,
axle, engine, transmission, steering,
suspension, chassis structure or tires.
• Safety chains must always be used be-
tween your vehicle and trailer. Always
connect the chains to the hook retainers
of the vehicle hitch. Cross the chains
under the trailer tongue and allow
enough slack for turning corners.
• Vehicles with trailers should not be
parked on a grade. When parking, apply
the parking brake on the tow vehicle. Put
the tow vehicle transmission in PARK.
For four-wheel drive vehicles, make sure
the transfer case is not in NEUTRAL.
Always, block or "chock" the trailer
wheels.
• GCWR must not be exceeded.
WARNING!
• Total weight must be distributed between
the tow vehicle and the trailer such that the
following four ratings are not exceeded:
1. GVWR
2. GTW
3. GAWR
4. Tongue weight rating for the trailer hitch utilized.
Towing Requirements — Trailer Brakes
•Do notinterconnect the hydraulic brake
system or vacuum system of your vehicle
with that of the trailer. This could cause
inadequate braking and possible personal
injury.
• An electronically actuated trailer brake controller is required when towing a trailer
with electronically actuated brakes. When
towing a trailer equipped with a hydraulic
surge actuated brake system, an electronic
brake controller is not required.
143

WARNING!
matic transmission is in PARK (or manual
transmission is in gear). The parking brake
should always be applied when the driver
is not in the vehicle.
CAUTION!
It is necessary to follow these steps to be
certain that the transfer case is fully in
NEUTRAL (N) before recreational towing
to prevent damage to internal parts.
1. Bring the vehicle to a complete stop on level ground, with the engine running.
Firmly apply the parking brake.
2. Shift the transmission to NEUTRAL.
3. Press and hold the brake pedal.
4. Depress the clutch pedal on a manual transmission.
5. Shift the transfer case into NEUTRAL: • With manual shift transfer case, shift
the transfer case lever into NEUTRAL
(N).
• With electronic shift transfer case, push and hold the transfer case NEU-
TRAL (N) button. Some models have a
small, recessed "N" button (at the cen-
ter of the transfer case switches) that
must be pressed using a ballpoint pen
or similar object. Other models have a
rectangular NEUTRAL switch, below
the rotary transfer case control knob.
The NEUTRAL (N) indicator light will
blink while the shift is in progress. The
light will stop blinking (stay on solid)
when the shift to NEUTRAL (N) is com-
plete. After the shift is completed and
the NEUTRAL (N) light stays on, re-
lease the NEUTRAL (N) button.
6. Release the parking brake.
7. Shift the transmission into REVERSE. 8. Release the brake pedal (and clutch pedal
on manual transmissions) for five seconds
and ensure that there is no vehicle
movement.
9. Repeat steps seven and eight with auto- matic transmission in DRIVE or manual
transmission in first gear.
10. Shift the transmission to NEUTRAL. Firmly apply the parking brake. Turn OFF
the engine. For vehicles with Keyless
Enter-N-Go, push and hold the ENGINE
START/STOP button until the engine
shuts off.
11. Shift the transmission into PARK or place manual transmission in gear (NOT
in NEUTRAL).
12. Place the ignition in the OFF mode, and remove the key fob.
13. Attach the vehicle to the tow vehicle using a suitable tow bar.
14. Release the parking brake.
149

NOTE:
With electronic shift transfer case:
• Steps 2 through 4 are requirements thatmust be met before pushing the NEUTRAL
(N) button, and must continue to be met
until the shift has been completed. If any of
these requirements are not met before
pushing the NEUTRAL (N) button or are no
longer met during the shift, the NEUTRAL
(N) indicator light will flash continuously
until all requirements are met or until the
NEUTRAL (N) 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 igni-
tion 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 indicates that shift requirements have
not been met.Shifting Out Of NEUTRAL (N)
Use the following procedure to prepare your
vehicle for normal usage:
1. Bring the vehicle to a complete stop,
leaving it connected to the tow vehicle.
2. Firmly apply the parking brake.
3. Turn the ignition to the ON/RUN mode, but do not start the engine.
4. Press and hold the brake pedal.
5. Shift the transmission into NEUTRAL.
• With manual shift transfer case, shiftthe transfer case lever to the desired
position.
• With electronic shift transfer case with rotary selector switch, push and hold
the transfer case NEUTRAL (N) button
until the NEUTRAL (N) indicator light
turns off. After the NEUTRAL (N) indi-
cator light turns off, release the NEU-
TRAL (N) button. After the NEUTRAL
(N) button has been released, the
transfer case will shift to the position
indicated by the selector switch. • With electronic shift transfer case with
push-button selector switch, push and
hold the switch for the desired transfer
case position, until the NEUTRAL (N)
indicator light turns off and the desired
position indicator light turns on.
NOTE:
When shifting out of transfer case NEUTRAL
(N), the engine should remain OFF to avoid
gear clash.
6. Shift automatic transmission into PARK.
7. Release the brake pedal (and clutch pedal on a manual transmission).
8. Disconnect vehicle from the tow vehicle.
9. Start the engine.
10. Press and hold the brake pedal.
11. Release the parking brake.
12. Shift the transmission into gear, release the brake pedal (and clutch pedal on
manual transmissions), and check that
the vehicle operates normally.
STARTING AND OPERATING
150

IN CASE OF EMERGENCY
HAZARD WARNING FLASHERS.....154
BULB REPLACEMENT ...........154
Replacement Bulbs.............154
FUSES.................... .155
Power Distribution Center.........155
JACKING AND TIRE CHANGING .....160
4500/5500 Models.............160
Preparations For Jacking ..........160
Jacking Instructions 4500 And
5500 Series .................161 To Stow The Flat Or Spare —
If Equipped
.................163
Hub Caps/Wheel Covers —
If Equipped .................163
JUMP STARTING ..............164
Preparations For Jump Start ........164
Jump Starting Procedure ..........165
IF YOUR ENGINE OVERHEATS ......166
GEAR SELECTOR OVERRIDE .......167FREEING A STUCK VEHICLE
.......168
TOWING A DISABLED VEHICLE .....169
Two-Wheel Drive Models..........170
Four-Wheel Drive Models ..........170
Emergency Tow Hooks — If Equipped . .171
ENHANCED ACCIDENT RESPONSE SYSTEM
(EARS) ................... .171
EVENT DATA RECORDER (EDR) ......171
IN CASE OF EMERGENCY
153

FUSES
WARNING!
• When replacing a blown fuse, always usean appropriate replacement fuse with
the same amp rating as the original fuse.
Never replace a fuse with another fuse of
higher amp rating. Never replace a
blown fuse with metal wires or any other
material. Do not place a fuse inside a
circuit breaker cavity or vice versa. Fail-
ure to use proper fuses may result in
serious personal injury, fire and/or prop-
erty damage.
WARNING!
• Before replacing a fuse, make sure thatthe ignition is off and that all the other
services are switched off and/or disen-
gaged.
• If the replaced fuse blows again, contact
an authorized dealer.
• If a general protection fuse for safety
systems (air bag system, braking sys-
tem), power unit systems (engine sys-
tem, transmission system) or steering
system blows, contact an authorized
dealer.
Power Distribution Center
The Power Distribution Center is located in
the engine compartment near the battery.
This center contains cartridge fuses, micro
fuses, relays, and circuit breakers. A descrip-
tion of each fuse and component may be
stamped on the inside cover, otherwise the
cavity number of each fuse is stamped on the
inside cover that corresponds to the following
chart.
Cavity Cartridge Fuse Micro Fuse Description
F01 80 Amp Black –Rad Fan Control Module – If Equipped
F03 60 Amp Yellow –Rad Fan – If Equipped
F05 40 Amp Green –Compressor for Air Suspension – If Equipped
F06 40 Amp Green –Antilock Brakes/Electronic Stability Control Pump
F07 40 Amp Green – Starter Solenoid
F08 20 Amp Blue (1500 LD/
Cummins Diesel) –
Emissions Diesel – If Equipped
155

CavityCartridge Fuse Micro Fuse Description
F09 40 Amp Green (Special
Services Vehicle & Cum- mins Diesel) –
Diesel Fuel Heater – If Equipped
F10 40 Amp Green –Body Controller / Exterior Lighting #2
F10 50 Amp Red –Body Controller / Exterior Lighting #2 – If Equipped with
Stop/Start
F11 30 Amp Pink –Integrated Trailer Brake Module – If Equipped
F12 40 Amp Green –Body Controller #3 / Power Locks
F13 40 Amp Green – Blower Motor
F14 40 Amp Green –Body Controller #4 / Interior Lighting
F16 30 Amp Pink –Smart Bar – If Equipped
F19 20 Amp Blue (1500 LD
Diesel)
30 Amp Pink (Cummins Diesel) –
SCR – If Equipped
F20 30 Amp Pink –Passenger Door Module
F21 30 Amp Pink –Drive Train Control Module
F22 20 Amp Blue
30 Amp Pink (Cummins Diesel) –
Engine Control Module
F23 30 Amp Pink –Body Controller #1 / Interior Lighting
F24 30 Amp Pink –Driver Door Module
F25 30 Amp Pink – Front Wiper
F26 30 Amp Pink –Antilock Brakes / Stability Control Module / Valves
F28 20 Amp Blue –Trailer Tow Backup Lights – If Equipped
IN CASE OF EMERGENCY
156

CavityCartridge Fuse Micro Fuse Description
F56 –15 Amp Blue Additional Diesel Content – If Equipped
F57 –20 Amp Yellow Transmission
F58 –20 Amp Yellow Spare Fuse
F59 –10 Amp Red SCR Relay – If Equipped
F60 –15 Amp Blue Underhood Lamp
F61 –10 Amp Red (1500 LD Die-
sel & Cummins Diesel) PM Sensor – If Equipped
F62 –10 Amp Red Air Conditioning Clutch
F63 –20 Amp Yellow Ignition Coils (Gas), Urea Heater (Cummins Diesel)
F64 –25 Amp Clear Fuel Injectors / Powertrain
F65 –– Spare Fuse
F66 –10 Amp Red Sunroof / Passenger Window Switches / Rain Sensor
F67 –10 Amp Red CD / DVD / Bluetooth Hands-free Module – If Equipped
F69 –15 Amp Blue Mod SCR 12V (Cummins Diesel) – If Equipped
F70 –30 Amp Green Fuel Pump Motor
F71 –25 Amp Clear Amplifier
F72 –10 Amp Red PCM – If Equipped
F73 –20 Amp Yellow Fuel Transfer Pump (HD Only) – If Equipped
F74 –20 Amp Yellow (Gas Engine
& 1500 LD Diesel) Brake Vacuum Pump Gas/Diesel – If Equipped
F75 –10 Amp Red Coolant Temperature Valve Actuator
F76 –10 Amp Red Antilock Brakes / Electronic Stability Control
F77 –10 Amp Red Drivetrain Control Module/Front Axle Disconnect Module
IN CASE OF EMERGENCY
158

CavityCartridge Fuse Micro Fuse Description
F78 –10 Amp Red Engine Control Module / Electric Power Steering
F79 –15 Amp Blue Clearance Lights
F80 –10 Amp Red Universal Garage Door Opener / Compass
F81 –20 Amp Yellow Trailer Tow Right Turn / Stop Lights
F82 –10 Amp Red Steering Column Control Module / Cruise Control
F84 –15 Amp Blue Switch Bank / Instrument Cluster
F85 –10 Amp Red Airbag Module
F86 –10 Amp Red Airbag Module
F87 –10 Amp Red Air Suspension – If Equipped / Trailer Tow / Steering Col-
umn Control Module
F88 –15 Amp Blue Instrument Panel Cluster
F90/F91 –20 Amp Yellow Power Outlet (Rear Seats) Customer Selectable
F93 –20 Amp Yellow Cigar Lighter
F94 –10 Amp Red Shifter / Transfer Case Module
F95 –10 Amp Red Rear Camera / Park Assist
F96 –10 Amp Red Rear Seat Heater Switch
F97 –25 Amp Clear Rear Heated Seats & Heated Steering Wheel – If
Equipped
F98 –25 Amp Clear Front Heated Seats – If Equipped
F99 –10 Amp Red Climate Control
F100 –10 Amp Red Upfitters – If Equipped
F101 –15 Amp Blue Electrochromatic Mirror / Smart High Beams – If
Equipped
F104 –20 Amp Yellow Power Outlets (Instrument Panel / Center Console)
159

CAUTION!
• When installing the power distributioncenter cover, it is important to ensure
the cover is properly positioned and fully
latched. Failure to do so may allow water
to get into the power distribution center
and possibly result in an electrical sys-
tem failure.
• When replacing a blown fuse, it is impor-
tant to use only a fuse having the correct
amperage rating. The use of a fuse with
a rating other than indicated may result
in a dangerous electrical system over-
load. If a properly rated fuse continues
to blow, it indicates a problem in the
circuit that must be corrected.
JACKING AND TIRE CHANGING
WARNING!
• Do not attempt to change a tire on theside of the vehicle close to moving traf-
fic. Pull far enough off the road to avoid
the danger of being hit when operating
the jack or changing the wheel.
• Being under a jacked-up vehicle is dan-
gerous. The vehicle could slip off the
jack and fall on you. You could be
crushed. Never put any part of your body
under a vehicle that is on a jack. If you
need to get under a raised vehicle, take
it to a service center where it can be
raised on a lift.
• Never start or run the engine while the
vehicle is on a jack.
• The jack is designed to be used as a tool
for changing tires only. The jack should
not be used to lift the vehicle for service
purposes. The vehicle should be jacked
on a firm level surface only. Avoid ice or
slippery areas.
4500/5500 Models
These vehicles do not come equipped with a
jack.
NOTE:
Jacking and tire changing on 4500/
5500 models should be performed by an
authorized dealer, or knowledgeable service
personnel with the appropriate heavy duty
equipment, like a tire service company.
Preparations For Jacking
1. Park the vehicle on a firm, level surface.
Avoid ice or slippery areas.
WARNING!
Do not attempt to change a tire on the side
of the vehicle close to moving traffic, pull
far enough off the road to avoid being hit
when operating the jack or changing the
wheel.
2. Place the gear selector into PARK. On four-wheel drive vehicles, shift the trans-
fer case to the 4L position.
3. Turn on the Hazard Warning flasher.
IN CASE OF EMERGENCY
160

4. Apply the parking brake.
5. Turn the ignition OFF.
6. Block both the front and rear of the wheeldiagonally opposite the jacking position.
For example, if the right front wheel is
being changed, block the left rear wheel.
NOTE:
Passengers should not remain in the vehicle
when the vehicle is being jacked.Jacking Instructions 4500 And
5500 Series
WARNING!
Carefully follow these tire changing warn-
ings to help prevent personal injury or
damage to your vehicle:
• Always park on a firm, level surface as far from the edge of the roadway as
possible before raising the vehicle.
• Turn on the Hazard Warning flasher.
• Block the wheel diagonally opposite the
wheel to be raised.
• Set the parking brake firmly and set the
transmission in PARK.
• Never start or run the engine with the
vehicle on a jack.
• Do not let anyone sit in the vehicle when
it is on a jack.
• Do not get under the vehicle when it is
on a jack. If you need to get under a
raised vehicle, take it to a service center
where it can be raised on a lift.
• Only use the jack in the positions indi-
cated and for lifting this vehicle during a
tire change.
WARNING!
• If working on or near a roadway, beextremely careful of motor traffic.
• To assure that spare tires, flat or in-
flated, are securely stowed, spares must
be stowed with the valve stem facing the
ground.
Wheel Blocked
Warning Label
161