2023 RAM 1500 tire pressure

STARTING AND OPERATING135
The vehicle will return to NRH from Aero Mode if the
vehicle speed remains between 30 mph (48 km/h)
and 35 mph (56 km/h) for greater than 20 seconds or
if the vehicle speed falls below 30 mph (48 km/h).
NOTE:
Automatic Aero mode will be disabled if a trailer is
detected to prevent shifting loads.
 Speed thresholds for raising/lowering the vehicle
automatically at higher speeds only apply if
Automatic Aero Mode is enabled in your Uconnect
Radio settings.
To enter Aero Height manually push the height selector
switch down once from NRH at any vehicle speed. To
return to NRH push the height selector switch up once
while vehicle speed is less than 56 mph (90 km/h).
NOTE:Automatic Aero Mode may be disabled through vehicle
settings in the instrument cluster display Úpage 98 or
through your Uconnect Radio (if equipped) Úpage 191.
 Entry/Exit Height (Lowers the vehicle approximately
2 inches [51 mm]) – This position lowers the vehicle
for easier passenger entry and exit as well as lowering
the vehicle for easier loading and unloading of cargo.
To enter Entry/Exit Mode, push the height selector
switch down once from the NRH while the vehicle
speed is below 33 mph (53 km/h). Once the vehicle
speed goes below 15 mph (24 km/h) the vehicle
height will begin to lower. If the vehicle speed remains
between 15 mph (24 km/h) and 25 mph (40 km/h) for
greater than 60 seconds, or the vehicle speed exceeds
25 mph (40 km/h) the Entry/Exit change will be canceled. To return to Normal Height Mode, push the height
selector switch up once while in Entry/Exit or drive the
vehicle over 15 mph (24 km/h).
NOTE:Entry/Exit Height may be achieved using the Remote
Lowering feature on your key fob for easier entry/loading
Úpage 16.
The system requires that the ignition be in the ON/RUN
position or the engine running for all user requested
changes. When lowering the vehicle, all of the doors must
be closed. If a door is opened at any time while the vehicle
is lowering, the change will not be completed until the
open door(s) is closed.
This system uses a lifting and lowering pattern which
keeps the headlights from incorrectly shining into
oncoming traffic. When raising the vehicle, the rear of the
vehicle will move up first and then the front. When
lowering the vehicle, the front will move down first and
then the rear.
After the engine is turned off, it may be noticed that the air
suspension system operates briefly; this is normal. The
system is correcting the position of the vehicle to ensure a
proper appearance.
To assist with changing a spare tire, the air suspension
system has a feature which allows the automatic leveling
to be disabled
Úpage 98. Default Ride Height:

Select Aero Height or Normal Ride Height as the default
for all vehicle speeds and operation. This is the
selected height that the suspension will level for speed
changes (e.g. raising from Entry/Exit Height at speed,
lowering from Off-Road Height at speed, etc.).
 Default ride height can be changed by manually
adjusting the Air Suspension switch to Normal Ride
Height or Aero Ride Height and staying in the selected
height for 2.5 seconds. It will be stored as the default
ride height and the height will be maintained until a
new default ride height is selected.
NOTE:If equipped with a touchscreen radio, all enabling/
disabling of air suspension features must be done through
the radio
Úpage 191.
AIR SUSPENSION MODES
The air suspension system has multiple modes to protect
the system in unique situations. The engine should be
running to change between Air Suspension Modes.
CAUTION!
When in Entry/Exit Height, be aware of your
surroundings, you may not have the clearance required
for certain areas and vehicle damage may occur.
WARNING!
The air suspension system uses a high pressure
volume of air to operate the system. To avoid personal
injury or damage to the system, see an authorized
dealer for service.
4

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138STARTING AND OPERATING
Entry/Exit Height (Lowers the vehicle approximately
3 inches [73 mm]) – This position lowers the vehicle
for easier passenger entry and exit as well as lowering
the vehicle for easier loading and unloading of cargo.
To enter Entry/Exit Mode, push the height selector
switch down twice from the NRH while the vehicle
speed is below 33 mph (53 km/h). Once the vehicle
speed goes below 15 mph (24 km/h) the vehicle
height will begin to lower. If the vehicle speed remains
between 15 mph (24 km/h) and 25 mph (40 km/h) for
greater than 60 seconds, or the vehicle speed exceeds
25 mph (40 km/h) the Entry/Exit change will be canceled. To return to Normal Height Mode, push the
height selector switch up twice while in Entry/Exit or
drive the vehicle over 15 mph (24 km/h). Entry/Exit Height may not be available due to vehicle payload, an
instrument cluster display message is shown when this
occurs
Úpage 98.
The system requires that the ignition be in the ON/RUN
position or the engine running for all user requested
changes. When lowering the vehicle, all of the doors must
be closed. If a door is opened at any time while the vehicle
is lowering, the change will not be completed until the
open door(s) is closed. This system uses a lifting and lowering pattern which
keeps the headlights from incorrectly shining into
oncoming traffic. When raising the vehicle, the rear of the
vehicle will move up first and then the front. When
lowering the vehicle, the front will move down first and
then the rear.
After the engine is turned off, it may be noticed that the air
suspension system operates briefly; this is normal.
The system is correcting the position of the vehicle to
ensure a proper appearance.
To assist with changing a spare tire, the air suspension
system has a feature which allows the automatic leveling
to be disabled
Úpage 191.
Default Ride Height:
 Select Aero Height or Normal Ride Height as the default
for all vehicle speeds and operation. This is the
selected height that the suspension will level for speed
changes (e.g. raising from Entry/Exit Height at speed,
lowering from Off-Road Height at speed, etc.).
 Default ride height can be changed by manually
adjusting the Air Suspension switch to Normal Ride
Height or Aero Ride Height and staying in the selected
height for 2.5 seconds. It will be stored as the default
ride height and the height will be maintained until a
new default ride height is selected.
NOTE:If equipped with a touchscreen radio, all enabling/
disabling of air suspension features must be done through
the radio
Úpage 191.
AIR SUSPENSION MODES
The air suspension system has multiple modes to protect
the system in unique situations:
Automatic Aero Mode
To improve aerodynamics, the air suspension system has
a feature which will put the vehicle into Aero height
automatically at higher speeds
Úpage 98.
Tire Jack Mode
To assist with changing a tire, the air suspension system
has a feature which allows the automatic leveling to be
disabled
Úpage 191.
Transport Mode
For towing your vehicle with four wheels off the road, the
air suspension system has a feature which will put the
vehicle into Entry/Exit height and disable the automatic
load leveling system
Úpage 191.
CAUTION!
When in Entry/Exit Height, be aware of your
surroundings, you may not have the clearance required
for certain areas and vehicle damage may occur.
WARNING!
The air suspension system uses a high pressure
volume of air to operate the system. To avoid personal
injury or damage to the system, see an authorized
dealer for service.

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STARTING AND OPERATING145
(Continued)
To Deactivate
A tap on the brake pedal, pushing the CANC (cancel)
button, or normal brake pressure while slowing the vehicle
will deactivate the Cruise Control system without erasing
the set speed from memory.
The following conditions will also deactivate the Cruise
Control system without erasing the set speed from
memory:
Vehicle parking brake is applied
 Stability event occurs
 Gear selector is moved out of DRIVE
 Engine overspeed occurs
Pushing the on/off button or placing the ignition in the OFF
position, erases the set speed from memory.
ADAPTIVE CRUISE CONTROL (ACC)
Adaptive Cruise Control (ACC) increases the driving
convenience provided by Cruise Control while traveling on
highways and major roadways. However, it is not a safety
system and not designed to prevent collisions. The Cruise
Control function performs differently
Úpage 143.
ACC will allow you to keep Cruise Control engaged in light
to moderate traffic conditions without the constant need
to reset your speed. ACC utilizes a radar sensor and a
forward facing camera designed to detect a vehicle
directly ahead of you to maintain a set speed.
NOTE:
 If the ACC sensor detects a vehicle ahead, ACC will
apply limited braking or acceleration (not to exceed the
original set speed) automatically to maintain a preset
following distance, while matching the speed of the
vehicle ahead.
 Any chassis/suspension or tire size modifications to
the vehicle will affect the performance of the Adaptive
Cruise Control and Forward Collision Warning system.
 Fixed Speed Cruise Control (ACC not enabled) will not
detect vehicles directly ahead of you. Always be aware
of the feature selected
Úpage 402.
WARNING!
Adaptive Cruise Control (ACC) is a convenience
system. It is not a substitute for active driver involve -
ment. It is always the driver’s responsibility to be
attentive of road, traffic, and weather conditions,
vehicle speed, distance to the vehicle ahead and,
most importantly, brake operation to ensure safe
operation of the vehicle under all road conditions.
Your complete attention is always required while
driving to maintain safe control of your vehicle.
Failure to follow these warnings can result in a colli -
sion and death or serious personal injury.
 The ACC system:
 Does not react to pedestrians, oncoming vehi -
cles, and stationary objects (e.g., a stopped
vehicle in a traffic jam or a disabled vehicle).
 Cannot take street, traffic, and weather condi -
tions into account, and may be limited upon
adverse sight distance conditions.
 Does not always fully recognize complex driving
conditions, which can result in wrong or missing
distance warnings.
 Will bring your vehicle to a complete stop while
following a vehicle ahead and hold your vehicle
for approximately three minutes in the stop posi -
tion. If the vehicle ahead does not start moving
within three minutes the parking brake will be
activated, and the ACC system will be canceled.
You should not utilize the ACC system:
 When driving in fog, heavy rain, heavy snow, sleet,
heavy traffic, and complex driving situations (i.e., in
highway construction zones).
 When entering a turn lane or highway off-ramp; when
driving on roads that are winding, icy, snow-covered,
slippery, or have steep uphill or downhill slopes.
 When towing a trailer up or down steep slopes.
 When circumstances do not allow safe driving at a
constant speed.
WARNING!
4

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172STARTING AND OPERATING
VEHICLE LOADING
GROSS VEHICLE WEIGHT RATING
(GVWR)
The GVWR is the total permissible weight of your vehicle
including driver, passengers, vehicle, options and cargo.
The label also specifies maximum capacities of front and
rear Gross Axle Weight Rating (GAWR). Total load must be
limited so GVWR and front and rear GAWR are not
exceeded.
PAYLOAD
The payload of a vehicle is defined as the allowable load
weight a truck can carry, including the weight of the driver,
all passengers, options and cargo.
GROSS AXLE WEIGHT RATING (GAWR)
The GAWR is the maximum permissible load on the front
and rear axles. The load must be distributed in the cargo
area so that the GAWR of each axle is not exceeded.
Each axle GAWR is determined by the components in the
system with the lowest load carrying capacity (axle,
springs, tires or wheels). Heavier axles, or suspension
components sometimes specified by purchasers for
increased durability, do not necessarily increase the
vehicle's GVWR.
TIRE SIZE
The tire size on the Vehicle Certification Label represents
the actual tire size on your vehicle. Replacement tires
must be equal to the load capacity of this tire size.
RIM SIZE
This is the rim size that is appropriate for the tire size
listed.
INFLATION PRESSURE
This is the cold tire inflation pressure for your vehicle for
all loading conditions up to full Gross Axle Weight Rating
(GAWR).
CURB WEIGHT
The curb weight of a vehicle is defined as the total weight
of the vehicle with all fluids, including vehicle fuel, at full
capacity conditions, and with no occupants or cargo
loaded into the vehicle. The front and rear curb weight
values are determined by weighing your vehicle on a
commercial scale before any occupants or cargo are
added.
LOADING
The actual total weight and the weight of the front and rear
of your vehicle at the ground can best be determined by
weighing it when it is loaded and ready for operation. The entire vehicle should first be weighed on a commercial
scale to ensure that the Gross Vehicle Weight Rating
(GVWR) has not been exceeded. The weight on the front
and rear of the vehicle should then be determined
separately to be sure that the load is properly distributed
over the front and rear axle. Weighing the vehicle may
show that the Gross Axle Weight Rating (GAWR) of either
the front or rear axles has been exceeded but the total
load is within the specified GVWR. If so, weight must be
shifted from front to rear or rear to front as appropriate
until the specified weight limitations are met. Store the
heavier items down low and be sure that the weight is
distributed equally. Stow all loose items securely before
driving.
Improper weight distributions can have an adverse effect
on the way your vehicle steers and handles and the way
the brakes operate.
WARNING!
Do not load your vehicle any heavier than the GVWR or
the maximum front and rear GAWR. If you do, parts on
your vehicle can break, or it can change the way your
vehicle handles. This could cause you to lose control.
Overloading can shorten the life of your vehicle.

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STARTING AND OPERATING179
(Continued)
Some trailers (such as boat trailers) will need to
recalibrate while loaded and unloaded.
NOTE:

The system may not detect a trailer in low light condi -
tions. In sunny conditions, the performance may be
degraded as shadows pass over the trailer.
 The driver is always responsible for safe operation of
truck and trailer.
 The driver is always in control of the truck as well as the
trailer and is responsible for controlling the throttle and
brakes.
 The system may not function when the camera lens is
blocked, blurred (covered with water, snow, ice, dirt,
etc) and will not work unless the tailgate is upright and
fully latched.
TOWING REQUIREMENTS
To promote proper break-in of your new vehicle drivetrain
components, the following guidelines are recommended. Perform the maintenance listed in the Scheduled
Servicing section for the proper maintenance intervals
Úpage 333. When towing a trailer, never exceed the
GAWR or GCWR ratings.
Towing Requirements — Tires
 Do not attempt to tow a trailer while using a compact
spare tire.
 Do not drive more than 50 mph (80 km/h) when towing
while using a full size spare tire.
 Proper tire inflation pressures are essential to the safe
and satisfactory operation of your vehicle.
 Check the trailer tires for proper tire inflation pressures
before trailer usage.
 Check for signs of tire wear or visible tire damage
before towing a trailer.
 Replacing tires with a higher load carrying capacity will
not increase the vehicle's GVWR and GAWR limits.
 For further information
Úpage 370.
CAUTION!
Do not tow a trailer at all during the first 500 miles
(805 km) the new vehicle is driven. The engine, axle
or other parts could be damaged.
 Then, during the first 500 miles (805 km) that a
trailer is towed, do not drive over 50 mph (80 km/h)
and do not make starts at full throttle. This helps the
engine and other parts of the vehicle wear in at the
heavier loads.
WARNING!
Make certain that the load is secured in the trailer
and will not shift during travel. When trailering cargo
that is not fully secured, dynamic load shifts can
occur that may be difficult for the driver to control.
You could lose control of your vehicle and have a
collision.
 When hauling cargo or towing a trailer, do not over -
load your vehicle or trailer. Overloading can cause a
loss of control, poor performance or damage to
brakes, axle, engine, transmission, steering, suspen -
sion, chassis structure or tires.
 Safety chains must always be used between your
vehicle and trailer. Always connect the chains to the
hook retainers of the vehicle hitch. Cross the chains
under the trailer tongue and allow enough slack for
turning corners.
 Vehicles with trailers should not be parked on a
grade. When parking, apply the parking brake on the
tow vehicle. Put the tow vehicle transmission in
PARK. For four-wheel drive vehicles, make sure the
transfer case is not in NEUTRAL. Always, block or
"chock" the trailer wheels.
 GCWR must not be exceeded.
Total weight must be distributed between the tow
vehicle and the trailer such that the following four
ratings are not exceeded :
 GVWR
 GTW
 GAWR
 Tongue weight rating for the trailer hitch utilized
WARNING!
4

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190STARTING AND OPERATING
OFF-ROAD DRIVING TIPS
Care should be taken when attempting to climb steep hills
or driving diagonally across a hill or slope. If natural
obstacles force you to travel diagonally up or down a hill,
choose a mild angle and keep as little side tilt as possible.
Keep the vehicle moving and make turns slowly and
cautiously.
If you must back down a hill, back straight down using
REVERSE gear. Never back down in NEUTRAL or diagonally
across the hill.
When driving over sand, mud, and other soft terrain, shift
to low gear and drive steadily. Apply the accelerator slowly
to avoid spinning the wheels.
Do not reduce the tire pressures for this type of driving.
After Driving Off-Road
Off-road operation puts more stress on your vehicle than
does most on-road driving. After going off-road, it is always
a good idea to check for damage. That way you can get any
problems taken care of right away and have your vehicle
ready when you need it.
Completely inspect the underbody of your vehicle.
Check tires, body structure, steering, suspension, and
exhaust system for damage.
 Inspect the radiator for mud and debris and clean as
required. 
Check threaded fasteners for looseness, particularly
on the chassis, drivetrain components, steering, and
suspension. Retighten them, if required, and torque to
the values specified in the Service Manual.
 Check for accumulations of plants or brush. These
things could be a fire hazard. They might hide damage
to fuel lines, brake hoses, axle pinion seals, and
propeller shafts.
 After extended operation in mud, sand, water, or
similar dirty conditions, have the radiator, fan, brake
rotors, wheels, brake linings, and axle yokes inspected
and cleaned as soon as possible.
 If you experience unusual vibration after driving in
mud, slush or similar conditions, check the wheels for
impacted material. Impacted material can cause a
wheel imbalance and freeing the wheels of it will
correct the situation.
CAUTION!
Always check the depth of the standing water before
driving through it. Never drive through standing
water that is deeper than the bottom of the tire rims
mounted on the vehicle.
 Determine the condition of the road or the path that
is under water and if there are any obstacles in the
way before driving through the standing water.
 Do not exceed 5 mph (8 km/h) when driving through
standing water. This will minimize wave effects.
 Driving through standing water may cause damage
to your vehicle’s drivetrain components. Always
inspect your vehicle’s fluids (i.e., engine oil, transmis -
sion, axle, etc.) for signs of contamination (i.e., fluid
that is milky or foamy in appearance) after driving
through standing water. Do not continue to operate
the vehicle if any fluid appears contaminated, as this
may result in further damage. Such damage is not
covered by the New Vehicle Limited Warranty.
 Getting water inside your vehicle’s engine can cause
it to lock up and stall out, and cause serious internal
damage to the engine. Such damage is not covered
by the New Vehicle Limited Warranty.
WARNING!
Abrasive material in any part of the brakes may cause
excessive wear or unpredictable braking. You might not
have full braking power when you need it to prevent a
collision. If you have been operating your vehicle in dirty
conditions, get your brakes checked and cleaned as
necessary.

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202MULTIMEDIA
Trailer Brake/Trailer — If Equipped
When the Trailer Brake/Trailer button is pressed on the touchscreen, the system will display settings related to trailer towing.
NOTE:Depending on the vehicle’s options, feature settings may vary.
Setting Name Description
Auto Trailer Light Check This setting can be used to check the trailer lights when the trailer is electrically
connected to the vehicle. The available options are “On” or “Off”.
Trailer 1 Options for each Trailer are “Use This Trailer”, “Braking” (Light Electric, Heavy Electric,
Light Electric Over Hydraulic, and Heavy Electric Over Hydraulic), “Trailer Name”, and
“Tire Pressure” (Setup All Tires, Replace Single Tire, Set Target Tire Pressure, and Delete
Tire Settings).
Trailer 2 Options for each Trailer are “Use This Trailer”, “Braking” (Light Electric, Heavy Electric,
Light Electric Over Hydraulic, and Heavy Electric Over Hydraulic), “Trailer Name”, and
“Tire Pressure” (Setup All Tires, Replace Single Tire, Set Target Tire Pressure, and Delete
Tire Settings).
Trailer 3 Options for each Trailer are “Use This Trailer”, “Braking” (Light Electric, Heavy Electric,
Light Electric Over Hydraulic, and Heavy Electric Over Hydraulic), “Trailer Name”, and
“Tire Pressure” (Setup All Tires, Replace Single Tire, Set Target Tire Pressure, and Delete
Tire Settings).

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MULTIMEDIA203
Trailer 4 Options for each Trailer are “Use This Trailer”, “Braking” (Light Electric, Heavy Electric,
Light Electric Over Hydraulic, and Heavy Electric Over Hydraulic), “Trailer Name”, and
“Tire Pressure” (Setup All Tires, Replace Single Tire, Set Target Tire Pressure, and Delete
Tire Settings).
Trailer Surround Camera This setting will let you access options related to the “Trailer Surround Camera”.
Trailer Select Select from “Trailer 1”, “Trailer 2”, “Trailer 3”, and “Trailer 4”. These trailer designations
can be used to save different trailer settings.
Trailer Brake Type This setting will set the system to a specific trailer type. The available options are
“Light Electric”, “Heavy Electric”, “Light Electric Over Hydraulic”, and “Heavy Electric
Over Hydraulic”.
Trailer Name This setting will personalize the 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
Description
5

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