2020 Ram 3500 key fob battery

GETTING TO KNOW YOUR VEHICLE29
with an automatic door unlock feature which
will function if the ignition switch is in the OFF
position.
If one of the vehicle doors is open and the door
panel switch is used to lock the vehicle, once all
open doors have been closed the vehicle
checks the inside and outside of the vehicle for
any valid Passive Entry key fobs. If one of the
vehicle's Passive Entry key fobs is detected
inside the vehicle, and no other valid Passive
Entry key fobs are detected outside the vehicle,
the Passive Entry System automatically unlocks
all vehicle doors and chirps the horn three times
(on the third attempt ALL doors will lock and the
Passive Entry key fob can be locked in the
vehicle).
To Lock The Vehicle’s Doors:
With one of the vehicle’s Passive Entry key fobs
within 5 ft (1.5 m) of the driver or passenger
front door handles, push the door handle lock
button to lock all doors.
Push The Door Handle Button To Lock

Do NOT grab the door handle when pushing the
door handle lock button. This could unlock the
door(s).

Do NOT Grab The Door Handle When Locking
NOTE:
After pushing the door handle lock button,
you must wait two seconds before you can
lock or unlock the doors, using either Passive
Entry door handle. This is done to allow you to
check if the vehicle is locked by pulling the
door handle, without the vehicle reacting and
unlocking.
The Passive Entry system depends on a key
fob that is not fully discharged of its coin
battery capacity.
When the key fob battery is low, the instru
-
ment cluster will display a message indi -
cating that the key fob battery is low. Refer to
“Keys” in this chapter for further information.
The vehicle doors can also be locked by using
the key fob lock button or the lock button
located on the vehicle’s interior door panel.
2

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GETTING TO KNOW YOUR VEHICLE53
NOTE:
For vehicles shipped to or sold in the states of
California or Mississippi, the cargo, bed, and
mirror spotter lights will not work while the
vehicle is in motion. In every other state, the
cargo and mirror spotter lights will turn off when
the vehicle is in motion, but the bed light will
remain on. In all states, including California and
Mississippi, if a bed camera is deactivated, the
bed lights will turn back on.
BATTERY SAVER
To protect the life of your vehicle’s battery, load
shedding is provided for both the interior and
exterior lights.
If the ignition is OFF, the interior lights will
automatically turn off when:
Any door is left ajar for 10 minutes.
The Dome Defeat button is pushed.
The cargo, bed, and spotter lights are manu -
ally activated by either the headlight switch
or the truck bed switch. NOTE:
Battery saver mode is canceled if the ignition is
ON.
If the headlights remain on while the ignition is
placed in the OFF position, the exterior lights will
automatically turn off after eight minutes. If the
headlights are turned on and left on for eight
minutes while the ignition is OFF, the exterior
lights will automatically turn off.
INTERIOR LIGHTS
COURTESY LIGHTS
The courtesy, dome, cargo, and bed lights are
turned on when any door is opened. The
courtesy and dome lights are turned on when
the Dome On button is pushed on the overhead
console. Also, if your vehicle is equipped with
Remote Keyless Entry, and the unlock button is
pushed on the key fob, the courtesy, dome,
cargo, and bed lights will turn on.
Courtesy/Reading Lights
The overhead console lights can also be
operated individually as reading lights by
pushing the corresponding buttons.

Front Courtesy/Reading Lights

1 — Driver’s Reading Light On/Off Button
2 — Dome Defeat Button
3 — Dome On Button
4 — Passenger’s Reading Light On/Off Button
2

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GETTING TO KNOW YOUR VEHICLE93
(Continued)
To open a storage bin with the RamBox
unlocked, push and release the button located
on the lid. The RamBox lid will open upward to
allow hand access. Lift the lid to fully open.
NOTE:
RamBox will not open when the button is
pushed if the RamBox is locked.
RamBox Pushbutton And Lock
The interior of the RamBox will automatically
illuminate when the lid is opened. In addition to
the automatic illumination, there is a manual
on/off switch located at the rear of each storage
bin. Pushing the switch once will turn off the bin
lights, pushing the switch again will turn the
lights back on.

RamBox Light Switch
Cargo bins feature two removable drain plugs
(to allow water to drain from bins). To remove
plug, pull up on the edge. To install, push the
plug downward into drain hole.
NOTE:
Provisions are provided in the bins for cargo
dividers and shelf supports. These accessories
(in addition to other RamBox accessories) are
available from Mopar.Locking And Unlocking RamBox
Push and release the lock or unlock button on
the key fob to lock and unlock all doors, the
tailgate and the RamBox (if equipped). Refer to
“Keys” in this chapter for further details. The
RamBox storage bins can be locked using the
vehicle key. To lock and unlock the storage bin,
insert the key into the keyhole on the push
button and turn clockwise to lock or
counterclockwise to unlock. Always return the
key to the upright (vertical) position before
removing the key from the push button.
CAUTION!

Failure to follow the following items could
cause damage to the vehicle:
Assure that all cargo inside the storage bins
is properly secured.
Do not exceed cargo weight rating of 300 lbs
(136 kg) for 2500 and 3500 series vehicles
per bin.

CAUTION!
Leaving the lid open for extended periods of
time could cause the vehicle battery to
discharge. If the lid is required to stay open
for extended periods of time, it is
recommended that the bin lights be turned
off manually using the on/off switch.
CAUTION!
Ensure cargo bin lids are closed and
latched before moving or driving vehicle.
2

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382IN CASE OF EMERGENCY
Proper towing or lifting equipment is required to
prevent damage to your vehicle. Use only tow
bars and other equipment designed for this
purpose, following equipment manufacturer’s
instructions. Use of safety chains is mandatory.
Attach a tow bar or other towing device to main
structural members of the vehicle, not to
bumpers or associated brackets. State and
local laws regarding vehicles under tow must be
observed.
If you must use the accessories (wipers,
defrosters, etc.) while being towed, the ignition
must be in the ON/RUN mode, not the ACC
mode. If the key fob is unavailable or the vehicle's
battery is discharged, refer to ”Manual Park
Release” in this section for instructions on
shifting the transmission out of PARK for
towing.TWO-WHEEL DRIVE MODELS
The manufacturer recommends towing your
vehicle with all four wheels
OFF the ground
using a flatbed.
If flatbed equipment is not available, and the
transmission is operable, the vehicle may be
towed (with rear wheels ON the ground) under
the following conditions:
The transmission must be in NEUTRAL.
Towing Condition
Wheels OFF The
Ground 2WD Models
4WD Models
Flat Tow NONE If transmission is operable:
• Transmission in
NEUTRAL
• 30 mph (48 km/h) max speed
• 15 miles (24 km) max distance (6–speed
transmission)
• 30 miles (48 km) max distance (8–speed
transmission) See instructions in “Recreational Towing” under
“Starting And Operating”
Automatic Transmission in
PARK
Transfer Case in NEUTRAL (N)
Tow in forward direction
Wheel Lift Or Dolly Tow Front
NOT ALLOWED
Rear OK NOT ALLOWED
Flatbed ALL BEST METHOD BEST METHOD
CAUTION!
Do not use sling type equipment when
towing. Vehicle damage may occur.
When securing the vehicle to a flat bed
truck, do not attach to front or rear suspen-
sion components. Damage to your vehicle
may result from improper towing.

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552
INDEX
A
Adaptive Cruise Control (ACC)
(Cruise Control)
.............................................. 282Adding Engine Coolant (Antifreeze)............... 418Adding Fuel.......................................... 319, 320Additives, Fuel............................................... 454AdjustDown........................................................... 35Forward....................................................... 35Rearward..................................................... 35Up................................................................ 35Adjustable Pedals............................................ 42Air BagAir Bag Operation...................................... 185Air Bag Warning Light................................ 182Enhanced Accident Response......... 189, 384Event Data Recorder (EDR)....................... 384If Deployment Occurs................................ 188Knee Impact Bolsters................................ 185Maintaining Your Air Bag System.............. 190Maintenance............................................. 190Redundant Air Bag Warning Light.............183Transporting Pets...................................... 209Air Bag Light............................... 130, 182, 210Air Cleaner, Engine (Engine Air
Cleaner Filter)...................................... 403, 425
Air Conditioner Maintenance........................ 405Air Conditioner Refrigerant.................. 405, 406Air Conditioner System................................. 405Air Conditioning......................................... 57, 67Air Conditioning Filter..............................69, 406Air Conditioning System................................... 67Air Conditioning, Operating Tips....................... 68Air Filter........................................................ 403Air PressureTires......................................................... 436AlarmPanic........................................................... 15Security Alarm....................................25, 132Alterations/ModificationsVehicle......................................................... 12Android Auto................................................. 545Antifreeze (Engine Coolant)................. 418, 459Capacites................................................. 460Disposal................................................... 420Anti-Lock Brake System (ABS)...................... 144Anti-Lock Warning Light................................ 137Apple CarPlay................................................ 546Assist, Hill Start............................................. 151Audio Systems (Radio).................................. 467Auto Down Power Windows............................. 70Automatic Door Locks...................................... 30
Automatic Headlights.......................................50Automatic Tailgate Release.............................74Automatic Temperature Control (ATC)..............67Automatic Transmission....................... 235, 424Adding Fluid.............................................. 424Fluid And Filter Change............................. 424Fluid Change............................................. 424Fluid Level Check............................. 422, 423Fluid Type............................... 422, 463, 466Shifting..................................................... 239Special Additives...................................... 422Automatic Transmission Limp Home Mode... 238AUX Camera......................................... 311, 318Auxiliary Driving Systems.............................. 153Axle Fluid.....................................424, 463, 466Axle Lubrication............................................ 424
B
Back-Up......................................................... 309Back-Up Camera........................................... 309Bar, Stabilizer/Sway System......................... 260Battery................................................. 132, 400Blanket..................................................... 225Charging System Light.............................. 132Keyless Key Fob Replacement....................15Battery Saver Feature......................................53

20_DJD2_OM_EN_USC_t.book Page 552

556 J
Jack Location
................................................. 365Jump Starting................................................ 375
K
Key Fob Panic Alarm
................................................. 15Programming Additional Key Fobs....... 16, 24Key Fob Battery Service (Remote
Keyless Entry).................................................. 15
Key Fob Programming (Remote Keyless Entry).. 16
Keyless Enter-N-Go........................28, 214, 218Lock The Vehicle’s Doors....... 476, 494, 514Passive Entry............................................... 28Passive Entry Programming............. 494, 514Keys................................................................. 14Replacement............................................... 24
L
Lane Change And Turn Signals........................ 51Lane Change Assist......................................... 52LaneSense.................................................... 306Latches.......................................................... 212Hood........................................................... 74Lead Free Gasoline........................................ 454Leaks, Fluid................................................... 212Life Of Tires................................................... 439Light Bulbs........................................... 212, 351
Lights............................................................ 212Air Bag.................................... 130, 182, 210Automatic High Beam.................................. 49Brake Assist Warning............................... 148Brake Warning.......................................... 131Bulb Replacement.................................... 351Cab Top Clearance................................... 357Cargo........................................................... 52Center Mounted Stop............................... 356Courtesy/Reading....................................... 53Cruise....................................................... 141Daytime Running......................................... 49
Electronic Stability Program(ESP) Indicator... 132
Exterior...............................................48, 212Fog........................................................... 355Four Wheel Drive Indicator....................... 255Hazard Warning Flasher........................... 346Headlights............................................ 48, 50High Beam................................................... 49Hill Descent Control Indicator................... 149Illuminated Entry......................................... 54Interior......................................................... 53Lights On Reminder..................................... 51Low Fuel................................................... 135Malfunction Indicator (Check Engine)....... 133Park.......................................................... 140Passing........................................................ 50Seat Belt Reminder.................................. 130Security Alarm.......................................... 132Service..................................................... 351
Side Marker.............................................. 357Traction Control........................................ 148Transfer Case........................................... 255Turn Signals............51, 141, 212, 353, 355Warning Instrument Cluster Descriptions................................ 132, 141Limited-Slip Differential....................... 270, 424Load Shed Battery Saver Mode..................... 129Load Shed Battery Saver On......................... 129Load Shed Electrical Load Reduction........... 129Load Shed Intelligent Battery Sensor............ 129Loading Vehicle............................................. 324Tires.......................................................... 433LocksAutomatic Door............................................30Child Protection...........................................30Power Door..................................................27Low Tire Pressure System............................. 163Lubrication, Body.......................................... 414Lug Nuts/Bolts.............................................. 452
M
Maintenance....................................................73Maintenance Free Battery............................ 400Maintenance Plan......................................... 391Maintenance Schedule............... 385, 389, 391Malfunction Indicator Light
(Check Engine)..................................... 133, 143

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