RAM 1500 2021 Owners Manual
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SAFETY329
NOTE:
The TPMS is not intended to replace normal 
tire care and maintenance or to provide 
warning of a tire failure or condition.
The TPMS should not be used as a tire pres -
sure gauge while adjusting your tire pressure, 
unless your vehicle is equipped with a Tire Fill 
Alert (TFA) system.
Driving on a significantly underinflated tire 
causes the tire to overheat and can lead to 
tire failure. Underinflation also reduces fuel 
efficiency and tire tread life, and may affect 
the vehicle’s handling and stopping ability.
The TPMS is not a substitute for proper tire 
maintenance, and it is the driver’s responsi -
bility to maintain correct tire pressure using 
an accurate tire pressure gauge, even if 
underinflation has not reached the level to 
trigger illumination of the TPMS Warning 
Light.
Seasonal temperature changes will affect 
tire pressure, and the TPMS will monitor the 
actual tire pressure in the tire.
 Tire Pressure Monitoring Display
The Tire Pressure Monitoring System (TPMS) 
uses wireless technology with wheel rim 
mounted electronic sensors to monitor tire 
pressure levels. Sensors, mounted to each 
wheel as part of the valve stem, transmit tire 
pressure readings to the receiver module.
NOTE:
It is particularly important for you to check the 
tire pressure in all of the tires on your vehicle 
monthly and to maintain the proper pressure.
The TPMS consists of the following 
components:
Receiver module
Four Tire Pressure Monitoring System 
sensors
Various Tire Pressure Monitoring System 
messages, which display in the instrument 
cluster
Tire Pressure Monitoring System Warning 
Light
Tire Pressure Monitoring Low Pressure 
Warnings
The Tire Pressure Monitoring System 
(TPMS) Warning Light will illuminate 
in the instrument cluster and a chime 
will sound when tire pressure is low in 
one or more of the four active road tires. In 
addition, the instrument cluster will display a 
graphic showing the pressure values of each 
tire with the low tire pressure values in a 
different color. An "Inflate to XX" message will 
also be displayed.
Low Tire Pressure Display
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330SAFETY  
Should this occur, you should stop as soon as 
possible and inflate the tires with a low pressure 
condition (those in a different color in the 
instrument cluster graphic) to the vehicle’s 
recommended cold placard pressure inflation 
value as shown in the "Inflate to XX" message. 
Once the system receives the updated tire 
pressures, the system will automatically 
update, the graphic display in the instrument 
cluster will return to its original color, and the 
Tire Pressure Monitoring System Warning Light 
will turn off. The vehicle may need to be driven 
for up to 20 minutes above 15 mph (24 km/h) 
in order for the TPMS to receive this 
information.
NOTE:
When filling warm tires, the tire pressure may 
need to be increased up to an additional 4 psi 
(28 kPa) above the recommended cold placard 
pressure in order to turn the Tire Pressure Moni -
toring System Warning Light off.
Service TPMS Warning
If a system fault is detected, 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 "SERVICE TPMS SYSTEM" message for 
a minimum of five seconds and then display 
dashes (--) in place of the pressure value to 
indicate which sensor is not being received.
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 TPMS 
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 driving next to facilities emitting the same 
radio frequencies as the Tire Pressure Moni
-
toring System sensors
Installing aftermarket window tinting that 
contains materials 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 TPMS 
sensors A system fault may occur due to an incorrect 
TPMS sensor location condition. When a system 
fault occurs due to an incorrect TPMS 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 TPMS 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 
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SAFETY331
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 instru -
ment 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 
cluster will display a "SERVICE TPMS 
SYSTEM" message for a minimum of five 
seconds and then display dashes (--) in place 
of the pressure value.
For each subsequent ignition switch cycle, a 
chime will sound, the Tire Pressure Moni -
toring System (TPMS) Warning Light will flash 
on and off for 75 seconds and then remain 
on solid, and the instrument cluster will 
display a "SERVICE TPMS SYSTEM" message 
for a minimum of five seconds and then 
display dashes (--) in place of the pressure 
value.
Once you repair or replace the original road 
tire and reinstall it on the vehicle in place of 
the non-matching full size spare or compact 
spare, the TPMS will update automatically. In 
addition, the Tire Pressure Monitoring 
System (TPMS) Warning Light will turn off and 
the graphic in the instrument cluster will 
display a new pressure value instead of 
dashes (--), as long as no tire pressure is 
below the low-pressure warning limit in any of 
the four active road tires. The vehicle may 
need to be driven for up to 20 minutes above 
15 mph (24 km/h) in order for the TPMS to 
receive this information.
Tire Fill Alert
This feature notifies the user when the placard 
tire pressure is attained while inflating or 
deflating the tire.
You may choose to disable or enable the Tire Fill 
Alert feature through use of the Uconnect 
Settings in the radio.
NOTE:
Only one tire can be filled at a time when 
using the Tire Fill Alert system.
The Tire Fill Alert feature cannot be entered if 
an existing TPMS fault is set to “active” or if 
the system is in deactivation mode (if 
equipped).
The system will be activated when a positive 
increase in tire pressure is detected by the 
TPMS while inflating the tire. The ignition must 
be in the RUN mode, with the transmission in 
PARK.
NOTE:
It is not required to have the engine running to 
enter Tire Fill Alert mode.
The hazard lamps will come on to confirm the 
vehicle is in Tire Fill Alert mode.
When Tire Fill Alert mode is entered, the tire 
pressure display screen will be displayed in the 
instrument cluster.
If the hazard lamps do not come on while 
inflating the tire, the TPMS sensor may be out of 
range preventing the TPMS sensor signal from 
being received. In this case, the vehicle may 
need to be moved either forward or backward 
slightly to exit the null spot.
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332SAFETY  
Operation:
The horn will sound once to let the user know 
when to stop filling the tire, when it reaches 
recommended pressure.
The horn will sound three times if the tire is 
overfilled and will continue to sound every 
five seconds if the user continues to inflate 
the tire.
The horn will sound once again when enough 
air is let out to reach proper inflation level.
The horn will also sound three times if the tire 
is then underinflated and will continue to 
sound every five seconds if the user 
continues to deflate the tire.
Trailer Tire Pressure Monitoring System 
(TTPMS) — If Equipped
The Trailer Tire Pressure Monitoring System 
(TTPMS) is a feature that displays the trailer tire 
pressure values and warns the driver of a low 
tire pressure event based on the drivers set 
target tire pressure value, through TTPMS 
settings found in the radio.
The TTPMS monitors the pressure of each tire 
and warns the driver through the instrument 
cluster, when either a low tire pressure  condition falls below 25% of the drivers set 
pressure or if a system malfunction occurs. The 
instrument cluster will display the actual tire 
pressure or dashes for each of the trailer tires in 
the correct trailer position, based on trailer 
configuration. The TTPMS can support up to 
12 trailer tires per configured trailer on up to 
four configurable trailers  Ú
page 237.
Trailer Tire Pressure Monitoring System
Trailer Tire Pressure Sensor Pairing
In order use this feature, the provided tire 
pressure sensors must be installed in the 
desired trailer tires and the sensors must be 
paired to the truck. If the target trailer requires 
more than the provided four sensors, additional 
sensors can be purchased at an authorized 
Ram dealership. With the sensors installed and the trailer near 
or connected to your Ram truck, initiate the 
pairing process by entering the settings menu in 
the radio and selecting trailer. Select the 
desired trailer profile to pair to, open the “Tire 
Pressure” menu, and hit “Setup All Tires”  
Ú
page 237.
NOTE:
The vehicle may not be driven until the pairing 
process is complete.
Trailer Tire Pressure Settings
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SAFETY333
Trailer Tire Pressure Pairing
Follow the on screen prompts to select the 
number of axles (1 - 3), the number of trailer 
tires (2, 4, 6, 8, or 12), and the set trailer tire 
pressure. 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. It may 
take up to three minutes for the chirp to occur, 
indicating that the sensor has paired. Repeat 
process on each tire, in order, until complete. 
Do not exit the pairing screen until process is 
complete. If pairing was 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.
NOTE:
If the pairing process times out after three 
minutes of no communication with a sensor, a 
double horn chip will occur indicating the 
pairing has failed and a message will display on 
the radio indicating the process was unsuc
-
cessful. Under certain circumstances, the 
double horn chirp may continue to happen 
every three minutes indicating the failed 
pairing. If this happens, the horn chirping may 
be canceled by cycling the ignition button OFF 
and then back to RUN position.
Tire Pressure Monitoring Low Pressure 
Warnings
When a tire pressure low in one or more of the 
active road tires is detected, the instrument 
cluster will display a message stating “Trailer 
Tire Pressure Low”. The instrument cluster will 
then display the TTPMS graphic showing the 
pressure values of each tire with the low tire 
pressure values in a different color.
Should this occur, you should stop as soon as 
possible and inflate the tires with a low pressure  condition (those in a different color in the 
instrument cluster graphic) to the customer 
programmed target tire pressure value as 
shown at the top of the TTPMS instrument 
cluster graphic. Once the tire(s) are inflated, the 
system will automatically update the graphic 
display in the instrument cluster, returning to its 
original color. The vehicle may need to be driven 
for up to 10 minutes above 15 mph (24 km/h) 
in order for the TTPMS to receive the updated 
information.
Service TTPMS Warning
If a system fault is detected, the instrument 
cluster will display a “Trailer Tire Pressure 
System Service Required” message for a 
minimum of five seconds.
Once the system fault is corrected the "Trailer 
Tire Pressure System Service Required" 
message will no longer be displayed. The 
vehicle may need to be driven for up to 
10 minutes above 15 mph (24 km/h) in order 
for the TTPMS to receive the trailer tire pressure 
information.
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334SAFETY  
Trailer Tire Pres sure System Not Configured
A “Trailer Tire Pressure System Not Configured” 
message will be displayed in the instrument 
cluster on the TTPMS instrument cluster 
graphic when a trailer number is selected that 
has not had trailer tire pressure sensors paired. 
To correct this condition, see  Ú page 237.
Trailer Sensors Detected Do Not Match Active 
Trailer
The “Trailer Sensors Detected Do Not Match 
Active Trailer” message will be displayed in the 
instrument cluster when the trailer sensors 
being received by the TTPMS module do not 
match the trailer sensors paired to the current 
trailer number selected. This message will be 
displayed when the sensors being received 
completely match the sensors paired to another 
trailer number configured in the TTPMS module.
To correct this condition, the correct trailer 
number must be selected in the radio  
Ú page 237.OCCUPANT RESTRAINT SYSTEMS 
Some of the most important safety features in 
your vehicle are the restraint systems:
OCCUPANT RESTRAINT SYSTEMS 
F
EATURES 
Seat Belt Systems
Supplemental Restraint Systems (SRS) Air 
Bags
Child Restraints
Some of the safety features described in this 
section may be standard equipment on some 
models, or may be optional equipment on 
others. If you are not sure, ask an authorized 
dealer.
IMPORTANT SAFETY PRECAUTIONS
Please pay close attention to the information in 
this section. It tells you how to use your restraint 
system properly, to keep you and your 
passengers as safe as possible.
Here are some simple steps you can take to 
minimize the risk of harm from a deploying air 
bag:
 1. Children 12 years old and under should 
always ride buckled up in the rear seat of a 
vehicle with a rear seat.
2. A child who is not big enough to wear the  vehicle seat belt properly must be secured 
in the appropriate child restraint or 
belt-positioning booster seat in a rear 
seating position  Ú page 355.
3. If a child from 2 to 12 years old (not in a  rear-facing child restraint) must ride in the 
front passenger seat, move the seat as far 
back as possible and use the proper child 
restraint  Ú page 355.
4. Never allow children to slide the shoulder  belt behind them or under their arm.
5. You should read the instructions provided  with your child restraint to make sure that 
you are using it properly.
6. All occupants should always wear their lap  and shoulder belts properly.
7. The driver and front passenger seats should  be moved back as far as practical to allow 
the front air bags room to inflate.
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SAFETY335
8. Do not lean against the door or window. If 
your vehicle has side air bags, and 
deployment occurs, the side air bags will 
inflate forcefully into the space between 
occupants and the door and occupants 
could be injured.
9. If the air bag system in this vehicle needs to  be modified to accommodate a disabled 
person, see  Ú page 479 for customer 
service contact information.SEAT BELT SYSTEMS 
Buckle up even though you are an excellent 
driver, even on short trips. Someone on the road 
may be a poor driver and could cause a collision 
that includes you. This can happen far away 
from home or on your own street.
Research has shown that seat belts save lives, 
and they can reduce the seriousness of injuries 
in a collision. Some of the worst injuries happen 
when people are thrown from the vehicle. Seat 
belts reduce the possibility of ejection and the 
risk of injury caused by striking the inside of the 
vehicle. Everyone in a motor vehicle should be 
belted at all times.
Enhanced Seat Belt Use Reminder System 
(BeltAlert) 
Driver And Passenger BeltAlert — If Equipped
 BeltAlert is a feature intended to remind the 
driver and outboard front seat passenger (if 
equipped with outboard front passenger seat 
BeltAlert) to buckle their seat belts. The 
BeltAlert feature is active whenever the ignition 
switch is in the START or ON/RUN position. Initial Indication
If the driver is unbuckled when the ignition 
switch is first in the START or ON/RUN position, 
a chime will signal for a few seconds. If the 
driver or outboard front seat passenger (if 
equipped with outboard front passenger seat 
BeltAlert) is unbuckled when the ignition switch 
is first in the START or ON/RUN position the 
Seat Belt Reminder Light will turn on and 
remain on until both outboard front seat belts 
are buckled. The outboard front passenger seat 
BeltAlert is not active when an outboard front 
passenger seat is unoccupied.
BeltAlert Warning Sequence
The BeltAlert warning sequence is activated 
when the vehicle is moving above a specified 
vehicle speed range and the driver or outboard 
front seat passenger is unbuckled (if equipped 
with outboard front passenger seat BeltAlert) 
(the outboard front passenger seat BeltAlert is 
not active when the outboard front passenger 
seat is unoccupied). The BeltAlert warning 
sequence starts by blinking the Seat Belt 
Reminder Light and sounding an intermittent 
chime. Once the BeltAlert warning sequence 
has completed, the Seat Belt Reminder Light 
will remain on until the seat belts are buckled. 
WARNING!
Never place a rear-facing child restraint in 
front of an air bag. A deploying passenger 
front air bag can cause death or serious 
injury to a child 12 years or younger, 
including a child in a rear-facing child 
restraint.
Never install a rear-facing child restraint in 
the front seat of a vehicle. Only use a 
rear-facing child restraint in the rear seat. If 
the vehicle does not have a rear seat, do 
not transport a rear-facing child restraint in 
that vehicle.
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336SAFETY  
(Continued)
The BeltAlert warning sequence may repeat 
based on vehicle speed until the driver and 
occupied outboard front seat passenger seat 
belts are buckled. The driver should instruct all 
occupants to buckle their seat belts.
Change Of Status
If the driver or outboard front seat passenger (if 
equipped with outboard front passenger seat 
BeltAlert) unbuckles their seat belt while the 
vehicle is traveling, the BeltAlert warning 
sequence will begin until the seat belts are 
buckled again.
The outboard front passenger seat BeltAlert is 
not active when the outboard front passenger 
seat is unoccupied. BeltAlert may be triggered 
when an animal or other items are placed on 
the outboard front passenger seat or when the 
seat is folded flat (if equipped). It is 
recommended that pets be restrained in the 
rear seat (if equipped) in pet harnesses or pet 
carriers that are secured by seat belts, and 
cargo is properly stowed.
BeltAlert can be activated or deactivated by an 
authorized dealer. FCA US LLC does not 
recommend deactivating BeltAlert.NOTE:
If BeltAlert has been deactivated and the driver 
or outboard front seat passenger (if equipped 
with outboard front passenger seat BeltAlert) is 
unbuckled the Seat Belt Reminder Light will 
turn on and remain on until the driver and 
outboard front seat passenger seat belts are 
buckled.
Lap/Shoulder Belts   
All seating positions in your vehicle are 
equipped with lap/shoulder belts.
The seat belt webbing retractor will lock only 
during very sudden stops or collisions. This 
feature allows the shoulder part of the seat belt 
to move freely with you under normal 
conditions. However, in a collision the seat belt 
will lock and reduce your risk of striking the 
inside of the vehicle or being thrown out of the 
vehicle.
WARNING!
Relying on the air bags alone could lead to 
more severe injuries in a collision. The air 
bags work with your seat belt to restrain you 
properly. In some collisions, the air bags 
won’t deploy at all. Always wear your seat 
belt even though you have air bags.
In a collision, you and your passengers can 
suffer much greater injuries if you are not 
properly buckled up. You can strike the inte
-
rior of your vehicle or other passengers, or 
you can be thrown out of the vehicle. Always 
be sure you and others in your vehicle are 
buckled up properly.
It is dangerous to ride in a cargo area, 
inside or outside of a vehicle. In a collision, 
people riding in these areas are more likely 
to be seriously injured or killed.
Do not allow people to ride in any area of 
your vehicle that is not equipped with seats 
and seat belts.
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SAFETY337
(Continued)
Be sure everyone in your vehicle is in a seat 
and using a seat belt properly. Occupants, 
including the driver, should always wear 
their seat belts whether or not an air bag is 
also provided at their seating position to 
minimize the risk of severe injury or death 
in the event of a crash.
Wearing your seat belt incorrectly could 
make your injuries in a collision much 
worse. You might suffer internal injuries, or 
you could even slide out of the seat belt. 
Follow these instructions to wear your seat 
belt safely and to keep your passengers 
safe, too.
Two people should never be belted into a 
single seat belt. People belted together can 
crash into one another in a collision, hurting 
one another badly. Never use a lap/
shoulder belt or a lap belt for more than one 
person, no matter what their size.
WARNING!  (Continued)WARNING!
A lap belt worn too high can increase the 
risk of injury in a collision. The seat belt 
forces won’t be at the strong hip and pelvic 
bones, but across your abdomen. Always 
wear the lap part of your seat belt as low as 
possible and keep it snug.
A twisted seat belt may not protect you 
properly. In a collision, it could even cut into 
you. Be sure the seat belt is flat against 
your body, without twists. If you can’t 
straighten a seat belt in your vehicle, take it 
to an authorized dealer immediately and 
have it fixed.
A seat belt that is buckled into the wrong 
buckle will not protect you properly. The lap 
portion could ride too high on your body, 
possibly causing internal injuries. Always 
buckle your seat belt into the buckle 
nearest you.
A seat belt that is too loose will not protect 
you properly. In a sudden stop, you could 
move too far forward, increasing the possi -
bility of injury. Wear your seat belt snugly.
A seat belt that is worn under your arm is 
dangerous. Your body could strike the 
inside surfaces of the vehicle in a collision, 
increasing head and neck injury. A seat belt 
worn under the arm can cause internal inju -
ries. Ribs aren’t as strong as shoulder 
bones. Wear the seat belt over your 
shoulder so that your strongest bones will 
take the force in a collision.
A shoulder belt placed behind you will not 
protect you from injury during a collision. 
You are more likely to hit your head in a 
collision if you do not wear your shoulder 
belt. The lap and shoulder belt are meant to 
be used together.
A frayed or torn seat belt could rip apart in 
a collision and leave you with no protection. 
Inspect the seat belt system periodically, 
checking for cuts, frays, or loose parts. 
Damaged parts must be replaced immedi-
ately. Do not disassemble or modify the 
seat belt system. Seat belt assemblies 
must be replaced after a collision.
WARNING!  (Continued)
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338SAFETY  
Lap/Shoulder Belt Operating Instructions 
1. Enter the vehicle and close the door. Sit 
back and adjust the seat.
2. The seat belt latch plate is above the back  of the front seat, and next to your arm in the 
rear seat (for vehicles equipped with a rear 
seat). Grab the latch plate and pull out the 
seat belt. Slide the latch plate up the 
webbing as far as necessary to allow the 
seat belt to go around your lap.
Pulling Out The Latch Plate
 3. When the seat belt is long enough to fit, 
insert the latch plate into the buckle until 
you hear a “click.”
Inserting Latch Plate Into Buckle
4. Position the lap belt so that it is snug and  lies low across your hips, below your 
abdomen. To remove slack in the lap belt 
portion, pull up on the shoulder belt. To 
loosen the lap belt if it is too tight, tilt the 
latch plate and pull on the lap belt. A snug 
seat belt reduces the risk of sliding under 
the seat belt in a collision.
 Positioning The Lap Belt
5. Position the shoulder belt across the  shoulder and chest with minimal, if any 
slack so that it is comfortable and not 
resting on your neck. The retractor will 
withdraw any slack in the shoulder belt.
6. To release the seat belt, push the red button  on the buckle. The seat belt will automat -
ically retract to its stowed position. If 
necessary, slide the latch plate down the 
webbing to allow the seat belt to retract 
fully.
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