2020 Ram 3500 Chassis Cab cruise control

246STARTING AND OPERATING
To Cancel
The following conditions will cancel the Normal
(Fixed Speed) Cruise Control without clearing
the memory:
The brake pedal is applied.
The CANCEL button is pushed.
The Electronic Stability Control/Traction
Control System (ESC/TCS) activates.
The vehicle parking brake is applied.
The braking temperature exceeds normal
range (overheated).
The gear selector is removed from the DRIVE
position.
The driver switches ESC to Full Off mode.
To Resume Speed
To resume a previously set speed, push the RES
(+) button and release. Resume can be used at
any speed above 20 mph (32 km/h).
To Turn Off
The system will turn off and erase the set speed
in memory if:
The Normal (Fixed Speed) Cruise Control on/
off button is pushed.
The ignition is placed in the OFF position.
You engage Four-Wheel Drive Low.
The Adaptive Cruise Control (ACC) on/off
button is pushed.
PARKSENSE REAR PARK ASSIST — IF
EQUIPPED
The ParkSense Rear Park Assist system
provides visual and audible indications of the
distance between the rear fascia and a
detected obstacle when backing up (e.g. during
a parking maneuver). Refer to “ParkSense
System Usage Precautions” in this section for
limitations of this system and recommenda -
tions.
ParkSense will retain the last system state
(enabled or disabled) from the last ignition cycle
when the ignition is changed to the ON/RUN
position.
ParkSense Rear Park Assist can be active only
when the gear selector is in REVERSE. If Park -
Sense is enabled at this gear selector position,
the system will remain active until the vehicle
speed is increased to approximately 7 mph
(11 km/h) or above. When in REVERSE and
above the system's operating speed, a warning will appear within the instrument cluster display
indicating the vehicle speed is too fast. The
system will become active again if the vehicle
speed is decreased to speeds less than approx
-
imately 6 mph (9 km/h).
ParkSense Sensors
For the 3500, 4500 and 5500 Chassis Cab
vehicles, the rear ParkSense sensors are
shipped loose. Please refer to the Ram Body
Builder’s Guide for more information.
The four ParkSense sensors are to be located in
the rear fascia/bumper, and monitor the area
behind the vehicle that is within the sensors’
field of view.
The sensors can detect obstacles from approxi -
mately 18 inches (45 cm) up to 79 inches
(200 cm) from the rear fascia/bumper in the
horizontal direction, depending on the location,
type and orientation of the obstacle.
NOTE:
If equipped as a dually, the ParkSense system
has six rear sensors to assist in detection
around the dually flares.

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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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INDEX
A
Accessories..........................................413Mopar.............................................413Adaptive Cruise Control (ACC) (Cruise
Control)...............................................232Adding Engine Coolant (Antifreeze)............364Adding Fuel..........................................269Additives, Fuel......................................400AdjustDown................................................31Forward.............................................31Rearward...........................................31Up....................................................31Adjustable Pedals....................................39Air BagAir Bag Operation...............................153Air Bag Warning Light..........................151Enhanced Accident Response.......158, 328Event Data Recorder (EDR)...................328If Deployment Occurs..........................157Knee Impact Bolsters..........................154Maintaining Your Air Bag System............158Maintenance.....................................158Transporting Pets...............................179Air Bag Light......................... 108, 151, 181Air Cleaner, Engine (Engine Air
Cleaner Filter)............................... 349, 371
Air Conditioner Maintenance.................... 351Air Conditioner Refrigerant............... 351, 352Air Conditioner System............................ 351Air Conditioning................................. 52, 62Air Conditioning Filter....................... 64, 352Air Conditioning System............................ 62Air Conditioning, Operating Tips.................. 63Air Filter.............................................. 349Air PressureTires............................................... 383AlarmPanic................................................ 14Security Alarm............................. 24, 110Alterations/ModificationsVehicle.............................................. 11Android Auto........................................ 496Antifreeze (Engine Coolant)...................... 364Capacites......................................... 405Disposal.......................................... 365Anti-Lock Brake System (ABS)................... 120Anti-Lock Warning Light........................... 114Apple CarPlay....................................... 497Assist, Hill Start..................................... 122Audio Systems (Radio)............................ 414Auto Down Power Windows........................ 65Auto Unlock, Doors................................ 216Automatic Door Locks............................... 29
Automatic Headlights............................... 46Automatic Temperature Control (ATC).......... 62Automatic Transmission................. 213, 370Adding Fluid..................................... 370Fluid And Filter Change....................... 370Fluid Change.................................... 370Fluid Level Check.............................. 368Fluid Type........................ 368, 409, 412Shifting........................................... 207Special Additives............................... 368Automatic Transmission Limp Home Mode.. 216AUX Camera................................. 261, 267Auxiliary Driving Systems........................ 129Axle Fluid.....................370, 371, 409, 412Axle Lubrication............................ 370, 371
B
Back-Up.............................................. 258Back-Up Camera................................... 258Battery....................................... 110, 346Blanket........................................... 196Charging System Light........................ 110Keyless Key Fob Replacement................ 14Battery Saver Feature.............................. 48Belts, Seat........................................... 180Body Builders Guide................................ 11Body Mechanism Lubrication................... 360

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505
B-Pillar Location
....................................379Brake Assist System...............................121Brake Control System.............................121Brake Fluid...................................367, 409Brake System............................... 367, 397Fluid Check.......................................367Master Cylinder.................................367Parking............................................204Warning Light....................................109Brake/Transmission Interlock...................206Bulb Replacement.................................300Bulbs, Light.................................. 182, 300
C
Cab Top Clearance Lights........................305Camera...............................................258Camera, AUX................................ 261, 267Camera, Rear............................... 258, 261Capacities, Antifreeze (Engine Coolant).......405Capacities, Fluid....................................405Caps, Filler Oil (Engine)............................... 343, 348Power Steering..................................229Radiator (Coolant Pressure)..................365Car Washes..........................................394Carbon Monoxide Warning............... 180, 401Cargo Light.............................................47Cellular Phone......................................483Center High Mounted Stop Light................304Center Seat Storage Compartment..............73
Changing A Flat Tire............................... 314Charge Air Cooler................................... 366Chart, Tire Sizing................................... 376Check Engine Light (Malfunction Indicator Light)119Checking Your Vehicle For Safety.............. 180Checks, Safety...................................... 180Child Restraint...................................... 160Child RestraintsBooster Seats................................... 164Child Seat Installation................. 172, 174How To Stow An unused ALR Seat Belt.... 171Infant And Child Restraints................... 162Locating The LATCH Anchorages............ 169Lower Anchors And Tethers For Children.. 165Older Children And Child Restraints........ 163Seating Positions............................... 165Clean Air Gasoline................................. 399CleaningWheels............................................ 389Climate Control....................................... 51Automatic.......................................... 55Manual.............................................. 52Cold Weather Operation.......................... 187Compact Spare Tire............................... 387Contract, Service................................... 501Cooling Pressure Cap (Radiator Cap).......... 365Cooling System..................................... 363Adding Coolant (Antifreeze).................. 364Coolant Level............................ 363, 366
Cooling Capacity................................ 405Disposal Of Used Coolant.................... 365Drain, Flush, And Refill........................ 364Inspection........................................ 366Points To Remember.......................... 366Pressure Cap.................................... 365Radiator Cap.................................... 365Selection Of Coolant(Antifreeze)................... 364, 407, 410Corrosion Protection.............................. 393Cruise Control (Speed Control)......... 230, 232Cruise Light......................................... 117Cupholders............................................ 77Customer Assistance............................. 500Cybersecurity....................................... 414
D
Daytime Running Lights............................ 45Dealer Service...................................... 347Defroster, Rear Window............................ 52Defroster, Windshield....................... 52, 181Delay (Intermittent) Wipers........................ 50Diagnostic System, Onboard.................... 118Diesel Exhaust Brake............................. 203Diesel Fuel.......................................... 402Diesel Fuel Requirements....................... 402Bulk Storage Of................................. 269Diesel Fuel System, Re-Priming................ 358Differential, Limited Slip......................... 228
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508
Jump Starting
.......................................319
K
Key Fob Panic Alarm
........................................14Programming Additional Key Fobs...... 16, 23Key Fob Battery Service (Remote
Keyless Entry).........................................14Key Fob Programming (Remote
Keyless Entry).........................................16Keyless Enter-N-Go.................. 26, 184, 188Lock The Vehicle’s Doors..... 423, 438, 458Passive Entry......................................26Passive Entry Programming..........438, 458Keys.....................................................13Replacement......................................23
L
Lane Change And Turn Signals....................47Lane Change Assist..................................47LaneSense...........................................256Latches...............................................182Hood.................................................66Lead Free Gasoline................................399Leaks, Fluid..........................................182Life Of Tires..........................................385Light Bulbs...................................182, 300Lights..................................................182Air Bag............................. 108, 151, 181Automatic High Beam............................45
Brake Assist Warning.......................... 126Brake Warning.................................. 109Bulb Replacement............................. 300Cab Top Clearance............................. 305Cargo................................................ 47Center Mounted Stop.......................... 304Courtesy/Reading................................ 48Cruise............................................. 117Daytime Running................................. 45Electronic Stability Program(ESP)Indicator...................................... 110Engine Temperature Warning................ 110Exterior...................................... 44, 182Fog................................................. 303Four Wheel Drive Indicator................... 228Hazard Warning Flasher...................... 294Headlights.................................... 44, 46High Beam......................................... 45Hill Descent Control Indicator................ 128Illuminated Entry................................. 49Interior.............................................. 48Lights On Reminder.............................. 47Low Fuel.......................................... 113Malfunction Indicator (Check Engine)..... 112Park................................................ 117Passing............................................. 46Seat Belt Reminder............................ 108Security Alarm................................... 110Service............................................ 300Traction Control................................. 126
Transfer Case................................... 228Turn Signals................47, 117, 182, 301Warning Instrument ClusterDescriptions......................... 110, 117Limited-Slip Differential.................. 228, 371Load Shed Battery Saver Mode................ 107Load Shed Battery Saver On.................... 107Load Shed Electrical Load Reduction......... 107Load Shed Intelligent Battery Sensor......... 107Loading Vehicle.................................... 273Tires............................................... 379LocksAutomatic Door................................... 29Child Protection................................... 29Power Door........................................ 26Low Tire Pressure System....................... 132Lubrication, Body.................................. 360Lug Nuts/Bolts..................... 317, 397, 398
M
Maintenance Free Battery....................... 346Maintenance Plan................................. 336Maintenance Schedule....329, 331, 334, 336Malfunction Indicator Light
(Check Engine)............................. 112, 119ManualPark Release.................................... 323Service............................................ 503Media Hub........................................... 481Memory Seat......................................... 32

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511
Snow Chains (Tire Chains)
.......................390Snow Plow...........................................286Snow Tires...........................................387Spare Tires...................................387, 388Spark Plugs..........................................407Speed Control Accel/Decel......................................231Cancel.............................................231Resume...........................................231Speed Control (Cruise Control)..........230, 232Starting............................... 183, 184, 187Automatic Transmission............... 183, 187Button...............................................17Cold Weather....................................187Engine Block Heater...........................190Engine Fails To Start...........................186Starting And Operating............................184Starting Procedures........................184, 187Starting Procedures (Diesel Engines)..........187Starting Procedures (Gas Engines).............183SteeringPower..............................................229Tilt Column.........................................38Wheel, Heated.....................................38Wheel, Tilt..........................................38Steering Wheel Audio Controls..................481Steering Wheel Mounted Sound
System Controls....................................481Storage.................................................72Storage Compartment, Center Seat..............73
Storage, Vehicle.............................. 63, 393Storing Your Vehicle............................... 393Sunglasses Storage................................. 81Sway Control, Trailer.............................. 127Synthetic Engine Oil............................... 349
T
Telescoping Steering Column..................... 38Temperature Control, Automatic (ATC).......... 62TiltDown................................................ 31Up.................................................... 31Tilt Steering Column................................. 38Tip Start...................................... 183, 188Tire And Loading Information Placard......... 379Tire Markings....................................... 375Tire Safety Information........................... 374Tires........................... 182, 382, 387, 392Aging (Life Of Tires)............................ 385Air Pressure...................................... 382Chains............................................. 390Changing......................................... 314Compact Spare................................. 387Dual............................... 317, 391, 398General Information................... 382, 387High Speed....................................... 383Inflation Pressure............................... 383Jacking............................................ 314Life Of Tires...................................... 385Load Capacity................................... 379
Pressure Monitoring System(TPMS)................................ 113, 132Quality Grading................................. 392Radial............................................. 384Replacement.................................... 385Rotation.......................................... 391Safety..................................... 374, 382Sizes.............................................. 376Snow Tires....................................... 387Spare Tires.............................. 387, 388Spinning.......................................... 384Trailer Towing................................... 280Tread Wear Indicators......................... 385Wheel Nut Torque.............................. 397To Open Hood........................................ 66Tongue Weight/Trailer Weight.................. 279Torque Converter Clutch......................... 212Towing........................................ 274, 326Disabled Vehicle................................ 326Guide.............................................. 279Recreational..................................... 288Weight............................................ 279Towing Behind A Motorhome................... 288Traction.............................................. 292Traction Control.................................... 124Traction Control Switch........................... 124Trailer Sway Control (TSC)....................... 127Trailer Towing....................................... 274Cooling System Tips........................... 285Hitches........................................... 278
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