snow chains Ram 1500 2020 Owner's Manual

SAFETY 231
If the ignition switch is cycled, this sequence will repeat,
providing the system fault still exists. If the system fault no
longer exists, the “Tire Pressure Monitoring System Warning
Light” will no longer flash, and the "SERVICE TPM
SYSTEM" message will no longer display, and a pressure
value will display in place of the dashes. A system fault can
occur due to any of the following:
• Signal interference due to electronic devices or drivingnext to facilities emitting the same radio frequencies as the
Tire Pressure Monitor (TPM) sensors
• Installing aftermarket window tinting that contains mate -
rials that may block radio wave signals
• Accumulation of snow or ice around the wheels or wheel housings
• Using tire chains on the vehicle
• Using wheels/tires not equipped with TPM sensors

A system fault may occur due to an incorrect TPM sensor loca -
tion condition. When a system fault occurs due to an incorrect
TPM sensor location, the “Tire Pressure Monitoring System
(TPMS) Warning Light” will flash on and off for 75 seconds
and then remain on solid. The system fault will also sound a
chime. In addition, the instrument cluster will display a “Tire
Pressure Temporarily Unavailable” message in place of the
tire pressure display screen. If the ignition switch is cycled, this sequence will repeat, providing the system fault still
exists. If the system fault no longer exists, the “Tire Pressure
Monitoring System Warning Light” will no longer flash and
the tire pressure display screen will be displayed showing the
tire pressure values the correct locations.

Vehicles With Non Matching Full Size Spare Or Compact
Spare
• The non matching full size spare or compact spare tire
does not have a TPM sensor. Therefore, the TPMS will not
monitor the pressure in the non matching full size spare or
compact spare tire.
• If you install the non matching full size spare or compact spare tire in place of a road tire that has a pressure below
the low-pressure warning limit, upon the next ignition
switch cycle, the Tire Pressure Monitoring System (TPMS)
Warning Light and a “LOW TIRE” message will remain
ON and a chime will sound. In addition, the graphic in the
instrument cluster will still display a pressure value in a
different color and an “Inflate to XX” message.
• After driving the vehicle for up to 20 minutes above 15 mph (24 km/h), the Tire Pressure Monitoring System
(TPMS) Warning Light will flash on and off for 75 seconds
and then remain on solid. In addition, the instrument
4
2020_DT_1500_OM_US.book Page 231

536 SERVICING AND MAINTENANCE
(Continued)
Dark Vapor Chrome, Black Satin Chrome, or Low Gloss
Clear Coat Wheels
Tire Chains (Traction Devices)
Use of traction devices require sufficient tire-to-body clear-
ance. Follow these recommendations to guard against
damage.
• Traction device must be of proper size for the tire, as recommended by the traction device manufacturer. Please follow the table below for proper tire size, chain type,
and axle recommendations:
CAUTION!
If your vehicle is equipped with these specialty wheels,
DO NOT USE wheel cleaners, abrasives, or polishing
compounds. They will permanently damage this finish
and such damage is not covered by the New Vehicle
Limited Warranty. HAND WASH ONLY USING MILD
SOAP AND WATER WITH A SOFT CLOTH. Used on a
regular basis; this is all that is required to maintain this
finish.
Vehicle Axle Recom
-
mendations Tire Sizes Chain Class
1500 Models Rear Only 275/65R18
275/55R20S Class
WARNING!
Using tires of different size and type (M+S, Snow)
between front and rear axles can cause unpredictable
handling. You could lose control and have a collision.
CAUTION!
To avoid damage to your vehicle or tires, observe the
following precautions:
• Because of restricted traction device clearance between tires and other suspension components, it is important
that only traction devices in good condition are used.
Broken devices can cause serious damage. Stop the
vehicle immediately if noise occurs that could indicate
device breakage. Remove the damaged parts of the
device before further use.
2020_DT_1500_OM_US.book Page 536

667
Extender................................................................................ 242
Front Seat.............................................................. 236, 237, 239
Inspection ............................................................................. 286
Lap/Shoulder Belt Operation ........................................... 239
Lap/Shoulder Belt Untwisting ......................................... 241Lap/Shoulder Belts............................................................. 237
Operating Instructions ....................................................... 239
Pregnant Women................................................................. 243
Pretensioners........................................................................ 243
Rear Seat ............................................................................... 237Reminder .............................................................................. 236
Seat Belt Extender ............................................................... 242Seat Belt Pretensioner ......................................................... 243
Seat Belt Reminder .............................................................. 236Untwisting Procedure ........................................................ 241
Seat Belts Maintenance........................................................... 544
Seats ................................................................................ 42, 45, 46 Adjustment....................................................................... 42, 46Easy Entry .............................................................................. 50
Head Restraints ..................................................................... 54
Memory .................................................................................. 47
Power ...................................................................................... 46
Rear Folding........................................................................... 42
Reclining Rear........................................................................ 45
Tilting ...................................................................................... 42
Security Alarm .................................................................. 33, 180 Selection Of Coolant (Antifreeze) .........................................554
Sentry Key
Key Programming .................................................................31
Sentry Key (Immobilizer).........................................................31
Sentry Key Replacement ..........................................................32
Service Assistance ...................................................................652
Service Contract.......................................................................654
Service Manuals ......................................................................656
Shifting...................................................................................... 302 Automatic Transmission ....................................................304
Transfer Case, Shifting Into Transfer Case Neutral
(N) ..........................................................................................424
Transfer Case, Shifting Out Of Transfer Case Neutral
(N) ..........................................................................................426
Shoulder Belts ..........................................................................237
Side Steps, Power ......................................................................37
Signals, Turn ..............................................................71, 193, 289
Siri..............................................................................................645
Sliding Rear Window, Power ..................................................97
Snow Chains (Tire Chains) ....................................................536
Snow Plow ...............................................................................421
Snow Tires ................................................................................532
Spare Tires ................................................................532, 533, 534
Spark Plugs ..............................................................................554
Speed Control Accel/Decel..........................................................................340
11
2020_DT_1500_OM_US.book Page 667