sensor Ram 3500 2020 Service Manual

438SERVICING AND MAINTENANCE
Run Flat Tires — If Equipped
Run Flat tires allow you the capability to drive
50 miles (80 km) at 50 mph (80 km/h) after a
rapid loss of inflation pressure. This rapid loss
of inflation is referred to as the Run Flat mode.
A Run Flat mode occurs when the tire inflation
pressure is of/or below 14 psi (96 kPa). Once a
Run Flat tire reaches the run flat mode it has
limited driving capabilities and needs to be
replaced immediately. A Run Flat tire is not
repairable. When a run flat tire is changed after
driving with underinflated tire condition, please
replace the TPM sensor as it is not designed to
be reused when driven under run flat mode
14 psi (96 kPa) condition.
NOTE:
TPM Sensor must be replaced after driving the
vehicle on a flat tire condition.
It is not recommended driving a vehicle loaded
at full capacity or to tow a trailer while a tire is in
the run flat mode.
See the tire pressure monitoring section for
more information.
Tire Spinning
When stuck in mud, sand, snow, or ice
conditions, do not spin your vehicle's wheels
above 30 mph (48 km/h) or for longer than
30 seconds continuously without stopping.
Refer to “Freeing A Stuck Vehicle” in “In Case Of
Emergency” for further information.
Tread Wear Indicators
Tread wear indicators are in the original
equipment tires to help you in determining
when your tires should be replaced.
Tire Tread

These indicators are molded into the bottom of
the tread grooves. They will appear as bands
when the tread depth becomes a 1/16 of an
inch (1.6 mm). When the tread is worn to the
tread wear indicators, the tire should be
replaced.
Refer to “Replacement Tires” in this section for
further information.
WARNING!

Fast spinning tires can be dangerous. Forces
generated by excessive wheel speeds may
cause tire damage or failure. A tire could
explode and injure someone. Do not spin your
vehicle's wheels faster than 30 mph (48 km/h)
for more than 30 seconds continuously when
you are stuck, and do not let anyone near a
spinning wheel, no matter what the speed.
1 — Worn Tire
2 — New Tire

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SERVICING AND MAINTENANCE445
(Continued)
increase tread life, help to maintain mud, snow
and wet traction levels and contribute to a
smooth, quiet ride.
Refer to the “Maintenance Plan” for the proper
maintenance intervals. More frequent rotation
is permissible if desired. The reasons for any
rapid or unusual wear should be corrected prior
to rotation being performed.
The suggested rotation method is the “rearward
cross” shown in the following diagram. This
rotation pattern does not apply to some
directional tires that must not be reversed.
Tire Rotation (Rearward Cross)
Dual Rear Wheels — If Equipped
The tires used on dual wheel assemblies should
be matched for wear to prevent overloading one
tire in a set. To check if tires are even, lay a
straight edge across all four tires. The straight
edge should touch all the tires.
Tire Rotation

NOTE:
If your vehicle is equipped with a Tire Pressure
Information System (TPIS):
The Tire Pressure Information System (TPIS)
uses unique sensors in the inner rear wheels
to help identify them from the outer rear
wheels, because of this, the inner and outer
wheel locations can’t be switched.
After a tire rotation is completed, as shown
below, the system can auto learn the loca -
tions of each sensor ID. Auto learning/local -
ization occurs when the vehicle ignition
status is changed from Off to On and speeds
of greater than 5 mph (8km/h) are obtained
and remain over 5 mph (8km/h) for at about
a 15 minute period. You may need to drive
for 20 minutes to account slower speeds and
stops.
If the tires are rotated incorrectly, The auto
localization of the TPIS sensors will fail to
locate correctly resulting in incorrect loca -
tions for the pressure values displayed in the
instrument cluster.
CAUTION!
3500 Dual Rear Tires may only have one
approved direction of rotation. This is to
accommodate the asymmetrical design
(tread pattern) of the On/Off-Road tire and
the use of Outline White Letter (OWL) tires.
7

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500MULTIMEDIA
NOTE:
For further information about Trailer Tire Pressure Monitoring, refer to “Auxiliary Driving Systems” in “Safety.”
Audio
After pressing the Audio button on the touchscreen, the following settings will be available:NOTE:
After pressing Next, the Tire Pressure screen appears. The default for this option is 50 PSI (344 kPa), however the range is selectable anywhere
between 25–125 PSI (172–862 kPa). Once PSI (kPa) is programmed, the pairing screen appears. Tire sensors must be paired in order shown.
Starting with Tire 1, deflate tire by 5 PSI (34 kPa) and wait for a horn chirp. Repeat process until complete. Do not exit the pairing screen until process
is complete. If pairing has been unsuccessful, a double horn chirp will sound, and a prompt on the touchscreen will allow you to retry the procedure;
“Retry” will only appear when setup fails. Each tire must be successfully paired during a single pairing process to receive the success screen.
Trailer Name List of Trailer Names
NOTE:
You can select and personalize your trailer name depending on the type of trailer you are hauling. Select the trailer name from the following list: trailer,
boat, car, cargo, dump, equipment, flatbed, gooseneck, horse, livestock, motorcycle, snowmobile, travel, utility, and 5th wheel.
Setting Name Selectable Options
Setting NameSelectable Options
Balance/FadeFrontRear LeftRight
NOTE:
The “Balance/Fade” feature allows you to adjust the Balance and Fade settings. Press and drag the Speaker icon or use the arrows to adjust, tap the
C icon to readjust to the center. Equalizer + –
NOTE:
When in the “Equalizer” display, you may adjust the Bass, Mid and Treble settings.

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518MULTIMEDIA
Trailer Brake
After pressing the Trailer Brake button on the touchscreen, the following settings will be available:
Once selecting the specific trailer, the following programmable options become available:
Setting Name Selectable Options
TrailerTrailer 1 Trailer 2Trailer 3Trailer 4
Setting Name Selectable Options
Use This TrailerOn Off
Braking Light ElectricLight Electric
Over Hydraulic Heavy ElectricHeavy Electric
Over Hydraulic
Tire Pressure Are you sure you want to delete the Tire Pressure Settings for Trailer 1?
Yes No
Number Of Axles
+ -
Number Of Tires
+ -
NOTE:
After pressing Next, the Tire Pressure screen appears. The default for this option is 50 PSI (344 kPa), however the range is selectable anywhere
between 25–125 PSI (172–862 kPa). Once PSI (kPa) is programmed the pairing screen appears. Tire sensors must be paired in order shown. Starting
with Tire 1, deflate tire by 5 PSI (34 kPa) and wait for a horn chirp. Repeat process until complete. Do not exit the pairing screen until process is
complete. If pairing has been unsuccessful, a double horn chirp will sound, and a prompt on the touchscreen will allow you to retry the procedure;
“Retry” will only appear when setup fails. Each tire must be successfully paired during a single pairing process to receive the success screen.

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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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