service RAM CHASSIS CAB 2020 Repair Manual

296IN CASE OF EMERGENCY
(Continued)
3. Once a connection between the vehicle and a SOS operator is made, the SOS Call
system may transmit the following
important vehicle information to a SOS
operator:
Indication that the occupant placed a SOS Call.
The vehicle brand.
The last known GPS coordinates of the vehicle.
4. You should be able to speak with the SOS operator through the vehicle audio system
to determine if additional help is needed. NOTE:
Your vehicle may be transmitting data as
authorized by the subscriber.
Once a connection is made between the
vehicle’s SOS Call system and the SOS oper
-
ator, the SOS operator may be able to open a
voice connection with the vehicle to deter -
mine if additional help is needed. Once the
SOS operator opens a voice connection with
the vehicle’s SOS Call system, the operator
should be able to speak with you or other
vehicle occupants and hear sounds occurring
in the vehicle. The vehicle’s SOS Call system
will attempt to remain connected with the
SOS operator until the SOS operator termi -
nates the connection.
5. The SOS operator may attempt to contact appropriate emergency responders and
provide them with important vehicle infor -
mation and GPS coordinates.
WARNING!
ALWAYS obey traffic laws and pay attention to
the road. ALWAYS drive safely with your hands
on the steering wheel. You have full
responsibility and assume all risks related to
the use of the features and applications in
this vehicle. Only use the features and
applications when it is safe to do so. Failure
to do so may result in an accident involving
serious injury or death.
WARNING!
If anyone in the vehicle could be in danger
(e.g., fire or smoke is visible, dangerous
road conditions or location), do not wait for
voice contact from an Emergency Services
Agent. All occupants should exit the vehicle
immediately and move to a safe location.
Never place anything on or near the
vehicle’s operable network and GPS
antennas. You could prevent operable
network and GPS signal reception, which
can prevent your vehicle from placing an
emergency call. An operable network and
GPS signal reception is required for the SOS
Call system to function properly.

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IN CASE OF EMERGENCY297
SOS Call System Limitations
Vehicles sold in Mexico DO NOT have SOS Call
system capabilities.
SOS or other emergency line operators in
Mexico may not answer or respond to SOS
system calls.
If the SOS Call system detects a malfunction,
any of the following may occur at the time the
malfunction is detected, and at the beginning of
each ignition cycle:
The overhead console light located between
the ASSIST and SOS buttons will continuously
be illuminated red.
The Device Screen will display the following
message: “Vehicle device requires service.
Please contact an authorized dealer.”
An In-Vehicle Audio message will state
“Vehicle device requires service. Please
contact an authorized dealer.” Even if the SOS Call system is fully functional,
factors beyond FCA US LLC’s control may
prevent or stop the SOS Call system operation.
The SOS Call system is embedded into the
vehicle’s electrical system. Do not add
aftermarket electrical equipment to the
vehicle’s electrical system. This may
prevent your vehicle from sending a signal
to initiate an emergency call. To avoid inter
-
ference that can cause the SOS Call system
to fail, never add aftermarket equipment
(e.g., two-way mobile radio, CB radio, data
recorder, etc.) to your vehicle’s electrical
system or modify the antennas on your
vehicle. IF YOUR VEHICLE LOSES BATTERY
POWER FOR ANY REASON (INCLUDING
DURING OR AFTER AN ACCIDENT), THE
UCONNECT FEATURES, APPS AND
SERVICES, AMONG OTHERS, WILL NOT
OPERATE.
Modifications to any part of the SOS Call
system could cause the air bag system to
fail when you need it. You could be injured
if the air bag system is not there to help
protect you.
WARNING! (Continued)WARNING!
Ignoring the overhead console light could
mean you will not have SOS Call services. If
the overhead console light is illuminated,
have an authorized dealer service the SOS
Call system immediately.
The Occupant Restraint Control module
turns on the air bag Warning Light on the
instrument panel if a malfunction in any
part of the system is detected. If the Air Bag
Warning Light is illuminated, have an
authorized dealer service the Occupant
Restraint Control system immediately.
6

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300IN CASE OF EMERGENCY
BULB REPLACEMENT
Replacement Bulbs
All of the inside bulbs are brass or glass-wedge base. Aluminum base bulbs are not approved.
Interior Bulbs
Bulb Name Bulb Number
Overhead Console Lamps TS 212–9
Dome Lamp 7679
NOTE:
For lighted switches, see an authorized dealer for replacement instructions.
Exterior Bulbs
Bulb Name Bulb Number
Low Beam (Halogen Reflector Headlamp) H11LL
High Beam (Halogen Reflector Headlamp) 9005LL
Low & High Beam (LED Reflector Headlamp) LED (Serviced At An Authorized Dealer)
Low & High Beam (LED Projector Headlamp) LED (Serviced At An Authorized Dealer)
Turn Signal / Front Position (Halogen Reflector Headlamp) 7444NA
Turn Signal / Front Position (LED Headlamps) LED (Serviced At An Authorized Dealer)
Front Side Marker (Halogen Reflector Headlamp) W5W
Front Side Marker (LED Headlamps) LED (Serviced At An Authorized Dealer)
Front Fog Lamps (Halogen Reflector Headlamp) H11LL

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IN CASE OF EMERGENCY301
Replacing Exterior Bulbs
Base Quad: Low Beam Headlamp, High
Beam Headlamp, Front Park And Turn — If
Equipped
Low Beam

1. Open the hood.

2. Disconnect and isolate the negative battery
cable.
3. Reach into the front wheel house ahead of the front wheel, remove the fastener, and
lift the cover over the access hole in the
front of the wheel house splash shield.
Access to the rear of the lamp can be gained
through this access hole.
Splash Shield Access Cover
4. Reach through the access hole of the wheel
house splash shield and disengage the bulb
access cover by rotating counterclockwise.

Bulb Access Cover

Front Fog Lamps (LED Headlamps)
LED (Serviced At An Authorized Dealer)
Side Indicators (Front And Side View Mirror) LED (Serviced At An Authorized Dealer)
Center High Mounted Stop Lamp (CHMSL) 921
Cab Roof Marker Lamps 194NA
Box Off Tail Lamps – Stop/Turn/Tail/License Plate 1157
Box Off Tail Lamps – Back Up 1156
Exterior Bulbs
Bulb Name Bulb Number
1 — Access Cover
2 — Fastener
6

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IN CASE OF EMERGENCY305
(Continued)
Cab Top Clearance Lamps — If Equipped

1. Remove the two screws from the top of the lamp.

Removing Rear Screw From Clearance Lamp
2. Rotate the bulb socket a quarter turn and
pull it from the lamp assembly.

Removing Bulb Socket From Clearance Lamp

3. Pull the bulb straight from it's socket and replace.

Removing The Bulb From The Bulb Socket

FUSES
WARNING!
When replacing a blown fuse, always use
an 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. Failure to use proper fuses
may result in serious personal injury, fire
and/or property damage.
Before replacing a fuse, make sure that the
ignition is off and that all the other services
are switched off and/or disengaged.
If the replaced fuse blows again, contact an
authorized dealer.
6

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306IN CASE OF EMERGENCY
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 description 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.

Power Distribution Center Location
If a general protection fuse for safety
systems (air bag system, braking system),
power unit systems (engine system, trans-
mission system) or steering system blows,
contact an authorized dealer.
WARNING! (Continued)
Cavity Cartridge Fuse Micro Fuse Description
F0180 Amp Black –Rad Fan Control Module – If Equipped (DS 1500 Only)
F02 60 Amp Yellow –ABS Pump Motor (HD Only)
F03 60 Amp Yellow –Rad Fan – If Equipped
F04 50 Amp Red 400W Inverter – If Equipped (HD Only)
F05 40 Amp Green
50 Amp Red (Special
Services Vehicle (SSV)) –
Compressor For Air Suspension – If Equipped
F06 40 Amp Green –ABS Pump Motor (DS 1500 Only)
Steering Torque Overlay Module (STOM) (HD Only)
F07 40 Amp Green –Starter Solenoid
F08 20 Amp Blue (DS 1500 LD/
Cummins Diesel)40 Amp Green –
–
NOX Sensor – If Equipped
Aux Relay Output- SSV Only

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308IN CASE OF EMERGENCY
F2220 Amp Blue –Engine Control Module GPEC / Heavy Duty / Other – If
Equipped
F22 25 Amp White (Cummins
Diesel) –
PCM – If Equipped
F23 30 Amp Pink –CBC Feed # 1
F24 30 Amp Pink –Driver Door Module
F25 30 Amp Pink –Front Wiper
F26 30 Amp Pink –Antilock Brakes / Stability Control Module / Valves – If
Equipped (DS 1500 Only)
F28 20 Amp Blue –Trailer Tow Backup Lights – If Equipped
F29 20 Amp Blue –Trailer Tow Parking Lights – If Equipped
F30 30 Amp Pink –Trailer Tow Receptacle / Trailer Tow (Separate E-Brake)/
Trailer Tow (BUX)
F31 30 Amp Pink –Diesel Heater Control – If Equipped (DS 1500 LD Diesel)
F31 20 Amp Blue –Aux App SSV Only - If Equipped
F32 ––Aux Feed, Special Services Vehicle-If Equipped (DS 1500
Only)
F33 20 Amp Blue –Trans Control Module – If Equipped (HD Only)
Aux Feed, SSV Only (DS 1500 Only)
F34 30 Amp Pink –Vehicle System Interface Module #2 – If Equipped (HD
Only)
SSV (DS 1500 Only)
F35 30 Amp Pink –Sunroof – If Equipped
Cavity Cartridge Fuse Micro Fuse Description

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314IN CASE OF EMERGENCY
(Continued)
JACKING AND TIRE CHANGING
F101–20 Amp Yellow Rear Heated Seat Right (HD Only)
F102 –
20 Amp Yellow Rear Heated Seat Left / Run RLY #3 Coil (HD Only)
F103 –10 Amp Red HeadLamp AFLS (HD Only)
F104 –20 Amp Yellow Power Outlets (Instrument Panel / Center Console) / Trunk
– If Equipped (DS 1500 Only)
UCI Port / USB Rear (HD Only)
Cavity
Cartridge Fuse Micro Fuse Description
CAUTION!
When installing the power distribution
center 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 system
failure.
When replacing a blown fuse, it is important
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 overload. If a
properly rated fuse continues to blow, it
indicates a problem in the circuit that must
be corrected.
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 the danger
of being hit when operating the jack or
changing the wheel.
Being under a jacked-up vehicle is
dangerous. 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.
WARNING! (Continued)

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IN CASE OF EMERGENCY315
(Continued)
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 autho -
rized 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.

2. Place the gear selector into PARK. On four-wheel drive vehicles, shift the transfer
case to the 4L position.
3. Turn on the Hazard Warning flashers.
4. Apply the parking brake. 5. Turn the ignition OFF.
6. Block both the front and rear of the wheel
diagonally opposite the jacking position. For
example, if the driver’s front wheel is being
changed, block the passenger’s rear wheel.

Wheel Blocked

NOTE:
Passengers should not remain in the vehicle
when the vehicle is being jacked.
Jacking Instructions 4500 And 5500 Series
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.
WARNING!
Carefully follow these tire changing warnings
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 flashers.
Apply the parking brake firmly and set the
transmission in PARK.
Block the wheel diagonally opposite the
wheel to be raised.
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.
6

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IN CASE OF EMERGENCY317
5. Remove the lug nuts and pull the wheel off.
Install the spare wheel and lug nuts with the
cone shaped end of the nuts toward the
wheel on Single Rear-Wheel (SRW) models.
On Dual Rear-Wheel models (DRW) the lug
nuts are a two-piece assembly with a flat
face. Lightly tighten the nuts. To avoid risk
of forcing the vehicle off the jack, do not
fully tighten the nuts until the vehicle has
been lowered.
6. Using the lug wrench, finish tightening the nuts using a crisscross pattern. For the
proper lug nut torque specifications refer to
“Wheel And Tire Torque Specifications” in
“Technical Specifications.” If in doubt about
the correct tightness, have them checked
with a torque wrench by an authorized
dealer or at a service station. 7. Install wheel center cap (if equipped) and
remove wheel blocks. Do not install chrome
or aluminum wheel center caps on the
spare wheel. This may result in cap damage.
8. Lower the jack to its fully closed position. If the jack will not lower by turning the dial
(thumbwheel) by hand, it may be necessary
to use the jack driver in order to lower the
jack. Stow the replaced tire, jack, and tools
as previously described.
9. Adjust the tire pressure when possible.
10. After 25 miles (40 km), check the lug nut torque with a torque wrench to ensure that
all lug nuts are properly seated against the
wheel.
Dual Rear Wheels
Slots in the wheels will assist in properly
orienting the inner and outer wheels. Align
these slots when assembling the wheels for
best access to the tire valve on the inner wheel.
The tires of both dual wheels must be
completely off the ground when tightening to
insure wheel centering and maximum wheel
clamping.
Dual wheel models require a special heavy-duty
lug nut tightening adapter (included with the
vehicle) to correctly tighten the lug nuts. Also,
when it is necessary to remove and install dual
rear wheels, use a proper vehicle lifting device.
NOTE:
When installing a spare tire (if equipped) as part
of a dual rear wheel end combination, the tire
diameter of the two individual tires must be
compared. If there is a significant difference,
the larger tire should be installed in a front loca-
tion. The correct direction of rotation for dual
tire installations must also be observed.WARNING!
Raising the vehicle higher than necessary can
make the vehicle less stable. It could slip off
the jack and hurt someone near it. Raise the
vehicle only enough to remove the tire.
WARNING!
A loose tire or jack thrown forward in a
collision or hard stop, could endanger the
occupants of the vehicle. Always stow the jack
parts and the spare tire in the places
provided.
6

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