2018 Ram 3500 Chassis Cab light

CavityCartridge Fuse Micro Fuse Description
F22 20 Amp Blue
30 Amp Pink (Cum- mins 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
F29 20 Amp Blue –Trailer Tow Parking Lights – If Equipped
F30 30 Amp Pink –Trailer Tow Receptacle
F31 30 Amp Pink (1500
LD Diesel) –
Urea Heater Control – If Equipped
F32 –– Spare Fuse
F33 20 Amp Blue –Special Services Vehicle Only
F34 30 Amp Pink –Vehicle System Interface Module #2 – If
Equipped
F35 30 Amp Pink –Sunroof – If Equipped
F36 30 Amp Pink –Rear Defroster – If Equipped
F37 30 Amp Pink –Cummins Diesel Fuel Heater #2 – If
Equipped
332 IN CASE OF EMERGENCY

CavityCartridge Fuse Micro Fuse Description
F38 30 Amp Pink –Power Inverter 115V AC – If Equipped
F39 20 Amp Blue –Power Outlet – Special Services Only
F41 –10 Amp Red Active Grill Shutter – If Equipped
F42 –20 Amp Yellow Horn
F44 –10 Amp Red Diagnostic Port
F46 –10 Amp Red Upfitter – If Equipped
F49 –10 Amp Red Instrument Panel Cluster (Except Fleet Ve-
hicles)
F50 –20 Amp Yellow Air Suspension Control Module – If
Equipped
F51 –10 Amp Red Ignition Node Module / Keyless Ignition
(Instrument Panel Cluster – Fleet VehiclesOnly)
F52 –5 Amp Tan Battery Sensor
F53 –20 Amp Yellow Trailer Tow – Left Turn/Stop Lights
F54 –20 Amp Yellow Adjustable Pedals
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
7
IN CASE OF EMERGENCY 333

CavityCartridge Fuse Micro Fuse Description
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 Dis-
connect Module
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 Column Control Module
F88 –15 Amp Blue Instrument Panel Cluster
7
IN CASE OF EMERGENCY 335

CavityCartridge Fuse Micro Fuse Description
F90/F91 –20 Amp Yellow Power Outlet (Rear Seats) Customer Select-
able
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)
336 IN CASE OF EMERGENCY

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.
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 speci-
fications refer to “Wheel And Tire Torque Specifica-
tions” 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.
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.
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.
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.
7
IN CASE OF EMERGENCY 341

Preparations For Jump Start
The battery in your vehicle is located in the front of the
engine compartment, behind the left headlight assembly.
NOTE:The positive battery post may be covered with a
protective cap if equipped. Lift up on the cap to gain access
to the positive battery post. Do not jump off fuses. Only
jump directly off positive post which has a positive (+)
symbol on or around the post.
WARNING!
• Take care to avoid the radiator cooling fan whenever
the hood is raised. It can start anytime the ignition
switch is ON. You can be injured by moving fan
blades.
• Remove any metal jewelry such as rings, watch
bands and bracelets that could make an inadvertent
electrical contact. You could be seriously injured.
• Batteries contain sulfuric acid that can burn your
skin or eyes and generate hydrogen gas which is
flammable and explosive. Keep open flames or
sparks away from the battery.
1. Apply the parking brake, shift the automatic transmis- sion into PARK and turn the ignition to LOCK.
2. Turn off the heater, radio, and all unnecessary electrical accessories.
3. If using another vehicle to jump start the battery, park the vehicle within the jumper cables reach, apply the
parking brake and make sure the ignition is OFF.
Correct Positive Jumping Location
344 IN CASE OF EMERGENCY

SCHEDULED SERVICING
Your vehicle is equipped with an automatic oil change
indicator system. The oil change indicator system will
remind you that it is time to take your vehicle in for
scheduled maintenance.
Based on engine operation conditions, the oil change
indicator message will illuminate. This means that service
is required for your vehicle. Operating conditions such as
frequent short-trips, trailer tow, extremely hot or cold
ambient temperatures, and E85 fuel usage will influence
when the “Oil Change Required” message is displayed.
Severe Operating Conditions can cause the change oil
message to illuminate as early as 3,500 miles (5,600 km)
since last reset. Have your vehicle serviced as soon as
possible, within the next 500 miles (805 km).
Your authorized dealer will reset the oil change indicator
message after completing the scheduled oil change. If a
scheduled oil change is performed by someone other than
your authorized dealer, the message can be reset by
referring to the steps described under “Instrument Cluster
Display” in “Getting To Know Your Instrument Panel” for
further information.Gasoline Engines:
Under no circumstances should oil change intervals exceed
8,000 miles (13,000 km), twelve months or 350 hours of
engine run time, whichever comes first. The 350 hours of
engine run or idle time is generally only a concern for fleet
customers.
Severe Duty:
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 predominately at idle or
very low engine RPM’s. This type of vehicle use is consid-
ered Severe Duty.
Once A Month Or Before A Long Trip:
•
Check engine oil level
• Check windshield washer fluid level
• Check the tire inflation pressures and look for unusual
wear or damage
• Check the fluid levels of the coolant reservoir, brake
master cylinder, power steering and automatic transmis-
sion, and fill as needed
• Check function of all interior and exterior lights
8
SERVICING AND MAINTENANCE 357

9. Reinsert the dipstick. Check for leaks. Release the park-ing brake.
NOTE: To prevent dirt and water from entering the trans-
mission 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.
Fluid And Filter Changes
Refer to the “Maintenance Plan” for the proper mainte-
nance intervals.
In addition, change the fluid and filters if the fluid becomes
contaminated (with water, etc.), or if the transmission is
disassembled for any reason.
Rear Axle And 4x4 Front Driving Axle Fluid Level
For models with 9.25 in Front Axles and 11.5 in Rear Axles,
refer to “Fluids And Lubricants” in “Servicing And Main-
tenance” for further information. For normal service, peri-
odic fluid level checks are not required. When the vehicle is
serviced for other reasons, the exterior surfaces of the axle
assembly should be inspected. When checking the fluid level (4500/5500 only), the vehicle
should be in a level position. The fluid level should be ¼ in
± ¼ in (6.4 mm ± 6.4 mm) below the fill hole on the front
axle. The fluid level should be level with the bottom of the
fill hole on the rear axle.
Drain And Refill
On 4500/5500 vehicles, remove the lower bolt to drain the
axle fluid.
4500/5500 Rear Axle Plugs
1 — 4500/5500 Rear Axle Fluid Fill Plug
2 — 4500/5500 Rear Axle Fluid Drain Plug
390 SERVICING AND MAINTENANCE