2020 Ram 4500 Chassis Cab Trailer

288STARTING AND OPERATING
RECREATIONAL TOWING (BEHIND MOTORHOME, ETC.)
Towing This Vehicle Behind Another Vehicle
NOTE:
When towing your vehicle, always follow applicable state and provincial laws. Contact state and provincial Highway Safety offices for additional
details.
Towing ConditionWheels OFF The
Ground Two-Wheel Drive
Models Four-Wheel Drive Models
Flat Tow
NONENOT ALLOWED See Instructions
Automatic transmission in PARK
Transfer case in NEUTRAL (N)
Tow in forward direction
Dolly Tow Front
NOT ALLOWED NOT ALLOWED
Rear OK NOT ALLOWED
On Trailer ALLOK OK

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STARTING AND OPERATING289
(Continued)
Recreational Towing — Two-Wheel Drive
Models
DO NOT flat tow this vehicle. Damage to the
drivetrain will result.
Recreational towing (for two-wheel drive
models) is allowed ONLY if the rear wheels are
OFF the ground. This may be accomplished
using a tow dolly or vehicle trailer. If using a tow
dolly, follow this procedure:

1. Properly secure the dolly to the tow vehicle, following the dolly manufacturer's instruc -
tions.

2. Drive the rear wheels onto the tow dolly.
3. Firmly apply the parking brake. Place auto -
matic transmission in PARK.
4. Properly secure the rear wheels to the dolly, following the dolly manufacturer's instruc -
tions.
5. Turn the ignition to the OFF position and remove the key fob.
6. Install a suitable clamping device, designed for towing, to secure the front wheels in the
straight position.
Recreational Towing — Four-Wheel Drive
Models
NOTE:
Both the manual shift and electronic shift
transfer cases must be shifted into N (Neutral)
for recreational towing. Automatic transmis -
sions must be shifted into PARK for recreational
towing. Refer to the following for the proper
transfer case N (Neutral) shifting procedure for
your vehicle.
CAUTION!
Towing with the rear wheels on the ground
will cause severe transmission damage.
Damage from improper towing is not
covered under the New Vehicle Limited
Warranty.
Do not disconnect the driveshaft because
fluid may leak from the transmission,
causing damage to internal parts.
CAUTION!
DO NOT dolly tow any 4WD vehicle. Towing
with only one set of wheels on the ground
(front or rear) will cause severe transmis -
sion and/or transfer case damage. Tow
with all four wheels either ON the ground, or
OFF the ground (using a vehicle trailer).
Tow only in the forward direction. Towing
this vehicle backwards can cause severe
damage to the transfer case.
Before recreational towing, the transfer
case must be in NEUTRAL. To be certain the
transfer case is fully in NEUTRAL, perform
the procedure outlined under “Shifting Into
NEUTRAL”. Internal transmission damage
will result, if the transfer case is not in
NEUTRAL during towing.
The transmission must be placed in PARK
for recreational towing.
Towing this vehicle in violation of the above
requirements can cause severe transmis -
sion and/or transfer case damage.
Damage from improper towing is not
covered under the New Vehicle Limited
Warranty.
5

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IN CASE OF EMERGENCY307
F0940 Amp Green (SSV &
Cummins Diesel) –
Aux Relay Output / Diesel Fuel Heater – If Equipped
F09 30 Amp Pink –Brake Vacuum Pump – If Equipped (HD Only)
F10 40 Amp Green –Body Controller / Exterior Lighting #2
F11 30 Amp Pink –PWR - Trailer Tow Electric Brake Batt Feed – If Equipped
(DS 1500 Only)
F11 40 Amp Green –Brake System Module (ECU and Valves) (HD Only)
F12 40 Amp Green –Body Controller #3
F13 40 Amp Green –Blower Motor
F14 40 Amp Green –Body Controller #4 / Exterior Lighting

F15 30 Amp Pink
40 Amp Green –
–Power Side Steps – If Equipped (HD Only)
Extra Fuse - SSV Only
F16 30 Amp Pink –Smart-Bar Module – If Equipped (HD Only)
F17 30 Amp Pink –Winch Control Module – If Equipped (HD Only)
F19 20 Amp Blue (DS 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
Cavity Cartridge Fuse Micro Fuse Description
6

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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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IN CASE OF EMERGENCY309
F3630 Amp Pink –Electric Back Light – If Equipped
F37 30 Amp Pink –Fuel Heater #2, Aux Relay 2 – If Equipped (HD Only)
SSV (DS 1500 Only)
F38 30 Amp Pink –Integrated Trailer Brake Module – If Equipped (HD Only)
Power Inverter 115 Volt AC – If Equipped (DS 1500 Only)
F39 20 Amp Blue –Power Outlet – SSV Only
F40 –10 Amp Red Ventilated Seats – If Equipped (HD Only)
F41 –10 Amp Red Active Grille Shutter / Active Air Dam – If Equipped
F42 –20 Amp Yellow Horn
F43 –15 Amp Blue Heated Steering Wheel – If Equipped (HD Only)
F44 –10 Amp Red Diagnostic Port
F46 –10 Amp RedUpfitters Relay Coil – If Equipped (HD Only)
Spare (DS 1500 Only)
F49 –10 Amp RedInstrument Panel Cluster / HVAC (DS 1500 Only)
Instrument Cluster / MOD CSG (HD Only)
F50 –20 Amp Yellow Air Suspension Control Module – If Equipped
F51 –10 Amp RedIgnition Node Module / Keyless Ignition Node Module,
Radio Frequency Hub Module / Electric Steering Column
Lock - If Equipped
F52 –5 Amp Tan Battery Sensor
F53 –20 Amp Yellow Trailer Tow – Left Turn/Stop Lights - If Equipped
F54 –20 Amp Yellow Non Memory Adjustable Pedals - If Equipped
CavityCartridge Fuse Micro Fuse Description
6

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312IN CASE OF EMERGENCY
F78 –10 Amp RedEngine Control Module / Powertrain Control Module /
Electric Power Steering (DS 1500 Only)
F78 –15 Amp BlueEngine Control Module / Powertrain Control Module / AEB
RACM MOD / Feed To AUX PDC Relay Coils/ HRLS (HD
Only)
F79 –15 Amp Blue ID / Clearance Lights
F80 –10 Amp RedUniversal Garage Door Opener / Compass / Anti-Intrusion
Module (DS 1500 Only)
ASSY Overhead Console / SW Assist / SW 911 – If
Equipped (HD Only)
F81 –20 Amp Yellow Trailer Tow Right Turn / Stop Lights - If Equipped
F82 –10 Amp Red Steering Column Control Module / Cruise Control
F83 ––No Connection
F84 –15 Amp Blue ASBM / HVAC / ICS / Rear Heated Seat Switches
F85 –10 Amp Red Airbag Module
F86 –10 Amp Red Airbag Module
F87 –10 Amp RedAir Suspension / ITBM / Steering Column Control Module
/ MOD Gateway CAN-C Trailer TPM (HD Only)
Air Suspension / Trailer Tow / DC/DC Converter (Voltage
Stabilizer) / Steering Column Control Module / Occupant
Classification Sensor (DS 1500 Only)
F88 –15 Amp Blue Instrument Panel Cluster
CavityCartridge Fuse Micro Fuse Description

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IN CASE OF EMERGENCY313
F90/F91 –20 Amp Yellow IGN or BATT Customer Selectable – If Equipped (HD Only)
Power Outlet (Rear Seats) Customer Selectable (DS 1500
Only)
F93 –20 Amp Yellow Cigar Lighter - If Equipped
F94 –10 Amp RedShift-By-Wire / Transfer Case Switch (DS 1500 Only)
Shift-By-Wire / Transfer Case Switch / Module TPM Trailer
(HD Only) / Module Gateway Can-C Trailer TPM (HD Only)
F95 –10 Amp RedRearview Camera / Park Assist / CHMSL Camera / Blind
Spot Sensor / Surround View Camera (HD Only)
Rear Camera / Park Assist / Blind Spot Sensor / Compass
(DS 1500 Only)
F96 –10 Amp RedRear Seat Heater Switch / Trunk Lamp With Flashlamp
Charger / Truck Lamp - If Equipped (DS 1500 Only)
Trailer Camera – If Equipped (HD Only)
F97 –25 Amp ClearRear Heated Seats And Heated Steering Wheel – If
Equipped (DS 1500 Only)
F97 –20 Amp Yellow Front Heated Seat Passenger – If Equipped (HD Only)
F98 –25 Amp Clear Front Heated Seats – If Equipped (DS 1500 Only)
F98 –20 Amp Yellow Front Heated Seat Driver – If Equipped (HD Only)
F99 –10 Amp RedHVAC / DASM (DS 1500 Only)
HVAC / In-Car Temperature Sensor / CSG MOD (HD Only)
F100 –10 Amp Red Upfitters – If Equipped (HD Only)
F101 –15 Amp Blue SSV Only
CavityCartridge Fuse Micro Fuse Description
6

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329
SERVICING AND MAINTENANCE
SCHEDULED SERVICING — GAS ENGINE
Your vehicle is equipped with an automatic oil
change indicator system. The oil change indi-
cator 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 Condi-
tions can cause the change oil message to illu -
minate 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). An authorized dealer will reset the oil change
indicator message after completing the sched
-
uled oil change. If a scheduled oil change is
performed by someone other than an autho -
rized dealer, the message can be reset by refer -
ring to the steps described under “Instrument
Cluster Display” in “Getting To Know Your
Instrument Panel” for further information.
Gas Engines:
Under no circumstances should oil change
intervals exceed 8,000 miles (13,000 km),
12 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. 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. Rotate at the
first sign of irregular wear.
Check the fluid levels of the coolant reservoir,
brake master cylinder, power steering and
automatic transmission (six-speed only), and
fill as needed.
Check function of all interior and exterior
lights.
7

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