2021 RAM 1500 instrument cluster

160STARTING AND OPERATING

Electronic Range Select (ERS)

To exit ERS mode, simply push and hold the +
button until the gear limit display disappears
from the instrument cluster.
When to Use TOW/HAUL Mode
Select TOW/HAUL mode when driving in
conditions such as: driving in hilly areas, towing
a trailer, carrying a heavy load, etc. This mode
will improve performance and reduce the
potential for transmission overheating or failure
due to excessive shifting.

TOW/HAUL Switch
The “TOW/HAUL Indicator Light” will illuminate
in the instrument cluster to indicate that TOW/
HAUL mode has been activated. Pushing the
switch a second time restores normal
operation. Normal operation is always the
default at engine start-up. If TOW/HAUL mode is
desired, the switch must be pushed each time
the engine is started.
1 — Shift Up (+)
2 — Shift Down (–)
WARNING!
Do not downshift for additional engine brak
-
ing on a slippery surface. The drive wheels
could lose their grip and the vehicle could
skid, causing a collision or personal injury.
WARNING!
Do not use the “TOW/HAUL” feature when
driving in icy or slippery conditions. The
increased engine braking can cause the rear
wheels to slide, and the vehicle to swing
around with the possible loss of vehicle con -
trol, which may cause an accident possibly
resulting in personal injury or death.

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162STARTING AND OPERATING
NOTE:
The 4WD High and 4WD Low positions are
designed for loose, slippery road surfaces
only. Driving in the 4WD High and 4WD Low
positions on dry, hard surfaced roads may
cause increased tire wear and damage to the
driveline components.
The transfer case N (Neutral) button is located
in the center of the 4WD Control Switch and is
pushed by using a ballpoint pen or similar
object. The transfer case N (Neutral) position
is to be used for recreational towing only
Úpage 231.
Transfer Case Position Indicator Lights
The Transfer Case Position Indicator Lights
(4WD High and 4WD Low) are located in the
instrument cluster and indicate the current and
desired transfer case selection. When you
select a different transfer case position, the
indicator lights will do the following:

1. The current position indicator light will turn off.

2. The selected position indicator light will flash until the transfer case completes the
shift. 3. When the shift is complete, the indicator
light for the selected position will stop
flashing and remain on.
If the transfer case does not shift into the
desired position, one or more of the following
events may occur:

1. The indicator light for the current position will remain on.

2. The newly selected position indicator light will continue to flash.
3. If the transfer case will not shift, a message
will appear on the cluster stating the 4WD
shift has canceled.
NOTE:
Before retrying a selection, make certain that all
the necessary requirements for selecting a new
transfer case position have been met. To retry
the selection, push the current position, wait
five seconds, and retry selection.
The “SVC 4WD Warning Light” monitors the
electronic shift four-wheel drive system. If this
light remains on after engine start up or
illuminates during driving, it means that the
four-wheel drive system is not functioning
properly and that service is required. NOTE:
Do not attempt to make a shift while only the
front or rear wheels are spinning. This could
cause damage to driveline components.
When operating your vehicle in 4WD Low, the
engine speed is approximately three times that
of the 2WD or 4WD High positions at a given
road speed. Take care not to overspeed the
engine and do not exceed 25 mph (40 km/h).
Proper operation of four-wheel drive vehicles
depends on tires of equal size, type and
circumference on each wheel. Any difference in
tire size can cause damage to the drivetrain.
Because four-wheel drive provides improved
traction, there is a tendency to exceed safe
turning and stopping speeds. Do not go faster
than road conditions permit.
WARNING!
Always engage the parking brake when
powering down the vehicle if the “SVC 4WD
Warning Light” is illuminated. Not engaging
the parking brake may allow the vehicle to roll
which may cause personal injury or death.

21_DT_OM_EN_USC_t.book Page 162

164STARTING AND OPERATING
NOTE:
The 4WD High and 4WD Low positions are
designed for loose, slippery road surfaces
only. Driving in the 4WD High and 4WD Low positions on dry hard surfaced roads may
cause increased tire wear and damage to the
driveline components.
The transfer case N (Neutral) button is
located in the center of the 4WD Control
Switch and is pushed by using a ballpoint pen
or similar object. The transfer case N
(Neutral) position is to be used for recre
-
ational towing only Ú page 231.
Transfer Case Position Indicator Lights
The Transfer Case Position Indicator Lights
(4WD High, 4WD Low, and 4WD Auto) are
located in the instrument cluster and indicate
the current and desired transfer case selection.
When you select a different transfer case
position, the indicator lights will do the
following:

1. The current position indicator light will turn off.

2. The selected position indicator light will flash until the transfer case completes the
shift.
3. When the shift is complete, the indicator light for the selected position will stop
flashing and remain on. If the transfer case does not shift into the
desired position, one or more of the following
events may occur:

1. The indicator light for the current position
will remain on.

2. The newly selected position indicator light will continue to flash.
3. If the transfer case will not shift, there will
be a cluster message stating the 4WD shift
has canceled.
NOTE:
Before retrying a selection, make certain that all
the necessary requirements for selecting a new
transfer case position have been met. To retry
the selection, push the current position, wait
five seconds, and retry selection.
The “SVC 4WD Warning Light” monitors the
electronic shift four-wheel drive system. If this
light remains on after engine start up or
illuminates during driving, it means that the
four-wheel drive system is not functioning
properly and that service is required.
WARNING!
You or others could be injured or killed if
you leave the vehicle unattended with the
transfer case in the N (Neutral) position
without first fully engaging the parking
brake. The transfer case N (Neutral) posi -
tion disengages both the front and rear
drive shaft from the powertrain, and will
allow the vehicle to roll, even if the trans -
mission is in PARK. The parking brake
should always be applied when the driver is
not in the vehicle.
The transmission may not engage PARK if
the vehicle is moving. Always bring the
vehicle to a complete stop before shifting to
PARK, and verify that the transmission gear
position indicator solidly indicates PARK (P)
without blinking. Ensure that the vehicle is
completely stopped, and the PARK position
is properly indicated, before exiting the
vehicle.

21_DT_OM_EN_USC_t.book Page 164

166STARTING AND OPERATING

height selector switch up once from the NRH
position while the vehicle speed is below
35 mph (56 km/h). When in the OR1 posi -
tion, if the vehicle speed remains between
40 mph (64 km/h) and 50 mph (80 km/h) for greater than 20 seconds or if the vehicle
speed exceeds 50 mph (80 km/h), the
vehicle will be automatically lowered to
NRH. Off-Road 1 may not be available due to
vehicle payload, an instrument cluster
message will be displayed when this occurs

Ú
page 114.

Off-Road 2 (OR2) (Raises the vehicle approx -
imately 2 inches (51 mm)) – This position is
intended for off-roading use only where
maximum ground clearance is required. To
enter OR2, push the height selector switch up
twice from the NRH position or once from the
OR1 position while vehicle speed is below
20 mph (32 km/h). While in OR2, if the
vehicle speed exceeds 25 mph (40 km/h)
the vehicle height will be automatically
lowered to OR1. Off-Road 2 may not be avail -
able due to vehicle payload, an instrument
cluster message will be displayed when this
occurs Ú page 114.
Aero Mode (Lowers the vehicle approximately
0.6 inch [15 mm]) – This position provides
improved aerodynamics by lowering the
vehicle. The vehicle will automatically enter
Aero Mode when the vehicle speed remains
between 62 mph (100 km/h) and 66 mph
(106 km/h) for greater than 20 seconds or if
the vehicle speed exceeds 66 mph (106 km/h).
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:

The vehicle will automatically enter Aero
Mode when the vehicle speed remains
between 62 mph (100 km/h) and 66 mph
(106 km/h) for greater than 20 seconds or
if the vehicle speed exceeds 66 mph
(106 km/h).

Speed thresholds for raising the vehicle only
apply if Automatic Aero Mode is enabled.
To enter Aero Mode 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 Ú page 114 or through your Uconnect
Radio if equipped Ú page 237.
Entry/Exit Mode (Lowers the vehicle approxi -
mately 2 inches (51 mm)) – This position
lowers the vehicle for easier passenger entry
and exit as well as lowering the rear of 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
CAUTION!
If the vehicle is in OFFROAD1 or OFFROAD2
setting, be aware of your surroundings, you
may not have the clearance required for
certain areas and vehicle damage may occur.

21_DT_OM_EN_USC_t.book Page 166

STARTING AND OPERATING167
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).
Entry/Exit mode may not be available due to
vehicle payload, an instrument cluster
message will be displayed when this occurs
Úpage 114.
NOTE:
Entry/Exit mode may be achieved using your
key fob for easier entry/loading Ú page 17.
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
Ú
page 114.
NOTE:
If equipped with a touchscreen radio, all
enabling/disabling of air suspension features
must be done through the radio Ú page 237.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.
Automatic AERO Mode
To improve aerodynamics, the air suspension
system has a feature which will put the vehicle
into AERO height automatically Úpage 114.
Automatic Aero Mode may be disabled through
vehicle settings in the Uconnect Radio (if
equipped) Ú page 237.
Tire Jack Mode
To assist with changing a tire, the air
suspension system has a feature which allows
the automatic leveling to be disabled
Ú page 237.
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
Ú page 237.
CAUTION!
When in ENTRY/EXIT setting, 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

21_DT_OM_EN_USC_t.book Page 167

168STARTING AND OPERATING
Wheel Alignment Mode
Before performing a wheel alignment, this
mode must be enabled Úpage 237.
Protection Strategy
In order to “protect” the air suspension system,
the vehicle will disable load leveling as required
(suspension overloaded, battery charge low,
etc.). Load leveling will automatically resume as
soon as system operation requirements are
met. See an authorized dealer if system does
not resume.
NOTE:
For towing with air suspension Ú page 214.
INSTRUMENT CLUSTER DISPLAY
M
ESSAGES
When the appropriate conditions exist, a
message will appear in the instrument cluster
display Ú page 114.
An audible chime will be heard whenever a
system error has been detected.
See an authorized dealer for system service if
normal operation does not resume.
OPERATION

Air Suspension Switch

The indicator lamps 1 through 5 will illuminate
to show the current position of the vehicle.
Flashing indicator lamps will show a position
which the system is working to achieve. When
raising, if multiple indicator lamps are flashing,
the highest flashing indicator lamp is the
position the system is working to achieve. When
lowering, if multiple indicators are flashing, the
lowest solid indicator lamp is the position the
system is working to achieve.
Pushing the height selector up once will move
the suspension one position higher from the
current position, assuming all conditions are
met (i.e. key in ON/RUN position, engine
running, speed below threshold, etc). The height selector switch can be pushed up
multiple times, each push will raise the
requested level by one position up to a
maximum position of OR2 or the highest
position allowed based on current conditions
(i.e. vehicle speed, etc).
Pushing the height selector down once will
move the suspension one position lower from
the current level, assuming all conditions are
met (i.e. key in ON/RUN position, engine
running, doors closed, speed below threshold,
etc). The height selector switch can be pushed
down multiple times, each push will lower the
requested level by one position down to a
minimum of Entry/Exit Mode or the lowest
position allowed based on current conditions
(i.e. vehicle speed, etc.)
Automatic height changes will occur based on
vehicle speed and the current vehicle height.
The indicator lamps and instrument cluster
display messages will operate the same for
automatic changes and user requested
changes.

21_DT_OM_EN_USC_t.book Page 168

170STARTING AND OPERATING
OR, if the vehicle speed exceeds 25 mph
(40 km/h) the vehicle height will be automat -
ically lowered to NRH. Off-Road may not be
available due to vehicle payload, an instru -
ment cluster display message will be shown
when this occurs Ú page 114.

Aero Mode (Lowers the vehicle approxi -
mately 0.6 inches (15 mm)) – This position
provides improved aerodynamics by
lowering the vehicle. The vehicle will auto -
matically enter Aero Mode when the vehicle
speed remains between 62 mph (100 km/h)
and 66 mph (106 km/h) for greater than 20 seconds or if the vehicle speed exceeds
66 mph (106 km/h). 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:
The vehicle will automatically enter Aero
Mode when the vehicle speed remains
between 62 mph (100 km/h) and 66 mph
(106 km/h) for greater than
20 seconds or if the vehicle speed exceeds
66 mph (106 km/h).
Speed thresholds for raising the vehicle only
apply if Automatic Aero Mode is enabled.
To enter Aero Mode 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).
Automatic Aero Mode may be disabled
through vehicle settings on your Uconnect
Radio.
Entry/Exit Mode (Lowers the vehicle approxi-
mately 3 inches (73 mm))
– This position
lowers the vehicle for easier passenger entry
and exit as well as lowering the rear of 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 mode
may not be available due to vehicle payload,
an instrument cluster display message will
be shown when this occurs Ú
page 114.
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.
CAUTION!
If the vehicle is in Off-Road setting, be aware
of your surroundings, you may not have the
clearance required for certain areas and
vehicle damage may occur.
CAUTION!
When in ENTRY/EXIT setting, be aware of your
surroundings, you may not have the
clearance required for certain areas and
vehicle damage may occur.

21_DT_OM_EN_USC_t.book Page 170

STARTING AND OPERATING171
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 237.
NOTE:
If equipped with a touchscreen radio, all
enabling/disabling of air suspension features
must be done through the radio Ú page 237.AIR SUSPENSION MODES
The Air Suspension system has multiple modes
to protect the system in unique situations:
AERO Mode
To improve aerodynamics, the air suspension
system has a feature which will put the vehicle
into AERO height automatically Úpage 114.
Tire Jack Mode
To assist with changing a tire, the air
suspension system has a feature which allows
the automatic leveling to be disabled
Ú page 237.
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
Ú page 237.
Wheel Alignment Mode
Before performing a wheel alignment, this
mode must be enabled Ú page 237.Protection Strategy
In order to “protect” the air suspension system,
the vehicle will disable load leveling as required
(suspension overloaded, battery charge low,
etc.). Load leveling will automatically resume as
soon as system operation requirements are
met. See an authorized dealer if system does
not resume.
NOTE:
For towing with air suspension Ú
page 214.
INSTRUMENT CLUSTER DISPLAY
M
ESSAGES
When the appropriate conditions exist, a
message will appear in the instrument cluster
display Ú page 114.
An audible chime will be heard whenever a
system error has been detected.
See an authorized dealer for system service if
normal operation does not resume.
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

21_DT_OM_EN_USC_t.book Page 171