2019 Ram 1500 suspension

ACTIVE-LEVEL FOUR CORNER AIR SUSPENSION
SYSTEM (REBEL MODELS ONLY) —
IF EQUIPPED ......................... .328
▫ Description .......................... .328
▫ Air Suspension Modes ...................331
▫ Instrument Cluster Display Messages .........332
▫ Operation ........................... .332
 AXLE LOCKER SYSTEM — IF EQUIPPED ......334
 LIMITED-SLIP DIFFERENTIAL — IF EQUIPPED .335
 POWER STEERING ...................... .336
▫ Electric Power Steering ..................336
 FUEL SAVER TECHNOLOGY 5.7L ENGINES
ONLY — IF EQUIPPED ....................337
 STOP/START SYSTEM — IF EQUIPPED .......337
▫ Automatic Mode ...................... .337
▫ Possible Reasons The Engine Does Not
Autostop ............................ .338
▫ To Start The Engine While In Autostop Mode . . .338 ▫
To Manually Turn Off The Stop Start System . . .339
▫ To Manually Turn On The Stop Start System. . . .340
▫ System Malfunction .....................340
 SPEED CONTROL — IF EQUIPPED ..........340
▫ To Activate .......................... .341
▫ To Set A Desired Speed ...................341
▫ To Vary The Speed Setting ................341
▫ To Accelerate For Passing .................343
▫ To Resume Speed ..................... .343
▫ To Deactivate ........................ .343
 ADAPTIVE CRUISE CONTROL (ACC) — IF
EQUIPPED ........................... .343
▫ Adaptive Cruise Control (ACC) Operation .....345
▫ Activating
Adaptive Cruise Control (ACC) .....346
▫ To Activate/Deactivate ...................346
▫ To Set A Desired ACC Speed ...............347
▫ To Cancel ........................... .348
290 STARTING AND OPERATING

ACTIVE-LEVEL FOUR CORNER AIR SUSPENSION
SYSTEM — IF EQUIPPED
Description
The air suspension system provides full time load leveling
capability along with the benefit of being able to adjust
vehicle height by the push of a switch.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).
• Normal Ride Height (NRH) – This is the standard
position of the suspension and is meant for normal
driving.
• Off-Road 1 (OR1) (Raises the vehicle approximately
1 in (26 mm)) – This position should be the primary
position for all off-road driving until Off Road 2 (OR2) is
needed. A smoother and more comfortable ride will
result. To enter OR1, push the height selector switch up
once from the NRH position while the vehicle speed is
below 35 mph (56 km/h). When in the OR1 position, 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.
Refer to “Instrument Cluster Display” in “Getting To
Know Your Instrument Panel” for further information.
Air Suspension Switch
1 — Off-Road 2 Indicator (Customer Selectable)
2 — Off-Road 1 Indicator (Customer Selectable)
3 — Normal Ride Height Indicator (Customer Selectable)
4 — Aero Mode Indicator (Customer Selectable)
5 — Entry/Exit Mode Indicator (Customer Selectable)
6 — Height Selector 322 STARTING AND OPERATING

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 cancelled. 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). Entry/Exit mode may not be
available due to vehicle payload, an instrument cluster
message will be displayed when this occurs. Refer to
“Instrument Cluster Display” in “Getting To Know Your
Instrument Panel” for further information.
NOTE: Entry/Exit mode may be achieved using your key
fob for easier entry/loading. Refer to “Keys” in “Getting To
Know Your Vehicle” for further information.
CAUTION!
When in ENTRY/EXIT setting, be aware of your sur-
roundings, you may not have the clearance required for
certain areas and vehicle damage may occur. The system requires that the ignition be in 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 oncom-
ing 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. Refer to “Instrument Cluster Display” in “Getting To
Know Your Instrument Panel” for further information.
NOTE:
If equipped with a touch screen radio all enabling/
disabling of air suspension features must be done through
the radio. Refer to “Uconnect Settings” in “Multimedia” for
further information.
324 STARTING AND OPERATING

WARNING!
The air suspension system uses a high pressure vol-
ume of air to operate the system. To avoid personal
injury or damage to the system, see your authorized
dealer for service.
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. Refer to “Instrument Cluster Display” in
“Getting To Know Your Instrument Panel” for further
information.
Automatic Aero Mode may be disabled through vehicle
settings in the instrument cluster display or through your
Uconnect Radio if equipped. Refer to “Instrument Cluster
Display” in “Getting To Know Your Instrument Panel” or
“Uconnect Settings” in “Multimedia” for further informa-
tion.NOTE:
This mode is intended to be enabled with engine
running.
Tire Jack Mode
To assist with changing a tire, the air suspension system
has a feature which allows the automatic leveling to be
disabled. Refer to “Instrument Cluster Display” in “Get-
ting To Know Your Instrument Panel” or “Uconnect Set-
tings” in “Multimedia” if equipped with a touch screen
radio for further information.
NOTE: This mode is intended to be enabled with engine
running.
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. Refer to “Instrument Cluster Dis-
play” in “Getting To Know Your Instrument Panel” or
“Uconnect Settings” in “Multimedia” if equipped with a
touch screen radio for further information.
NOTE: This mode is intended to be enabled with engine
running.6
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Wheel Alignment Mode
Before performing a wheel alignment, this mode must be
enabled. Refer to “Instrument Cluster Display” in “Getting
To Know Your Instrument Panel” or “Uconnect Settings” in
“Multimedia” if equipped with a touch screen radio for
further information.
NOTE:This mode is intended to be enabled with engine
running.
Protection Strategy
In order to “protect” the air suspension system, the vehicle
will disable load leveling as required (suspension over-
loaded, battery charge low, etc.). Load leveling will automati-
cally resume as soon as system operation requirements are
met. See your authorized dealer if system does not resume.
NOTE:If towing with air suspension refer to “Trailer Towing”
in “Starting And Operating” for further information.
Instrument Cluster Display Messages
When the appropriate conditions exist, a message will
appear in the instrument cluster display. Refer to “Instru-
ment Cluster Display” in “Getting To Know Your Instru-
ment Panel” for further information.
An audible chime will be heard whenever a system error
has been detected. See your authorized dealer for system service if normal
operation does not resume.
Operation
Air Suspension Switch
1 — Off-Road 2 Indicator (Customer selectable)
2 — Off-Road 1 Indicator (Customer selectable)
3 — Normal Ride Height Indicator (Customer selectable)
4 — Aero Mode Indicator (Customer Selectable)
5 — Entry/Exit Mode Indicator (Customer selectable)
6 — Height Selector
326 STARTING AND OPERATING

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 suspen-
sion one position higher from the current position, assum-
ing 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.
•
Off-Road 2 (OR2) – Indicator lamps 5, 4, 3, 2 and 1 will
be illuminated when the vehicle is in OR2.
• Off-Road 1 (OR1) – Indicator lamps 5, 4, 3 and 2 will be
illuminated when the vehicle is in OR1.
• Normal Ride Height (NRH) – Indicator lamps 5, 4 and 3
will be illuminated when the vehicle is in this position.
• Aero Mode – Indicator lamps 5 and 4 will be illuminated
when the vehicle is in this position.
• Entry/Exit Mode – Indicator lamp 5 will be illuminated
when the vehicle is in Entry Exit Mode. Entry/Exit
mode can be requested up to 33 mph (53 km/h). If
vehicle speed is reduced to, and kept below, 15 mph
(24 km/h) indicator lamp 4 will flash and indicator lamp
5 will remain solid until Entry/Exit Mode is achieved at
which point indicator lamp 4 will turn off.
• Transport Mode – No indicator lamps will be illumi-
nated. Transport Mode is disabled by driving the ve-
hicle.
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STARTING AND OPERATING 327

•Tire/Jack Mode – Indicator lamps 5 and 1 will be
illuminated. Tire/Jack Mode is disabled by driving the
vehicle.
• Wheel Alignment Mode – Indicator lamps 3, 4, and 5
will be illuminated. Wheel Alignment Mode is disabled
by driving the vehicle.
ACTIVE-LEVEL FOUR CORNER AIR SUSPENSION
SYSTEM (REBEL MODELS ONLY) — IF EQUIPPED
Description
The air suspension system provides full time load leveling
capability along with the benefit of being able to adjust
vehicle height by the push of a switch.
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).
Air Suspension Switch
1 — Off-Road Indicator (Customer selectable)
2 — Normal Ride Height Indicator (Customer selectable)
3 — Aerodynamic Height Indicator (Customer Selectable)
4— Entry/Exit Mode Indicator (Customer selectable)
5 — Height Selector
328 STARTING AND OPERATING

•Normal Ride Height (NRH) – This is the standard
position of the suspension and is meant for normal
driving.
• Off-Road (OR) (Raises the vehicle approximately 1 in
(26 mm)) – This position is intended for off-roading use
only where maximum ground clearance is required. To
enter OR, push the height selector switch up once from
the NRH position while vehicle speed is below 20 mph
(32 km/h). While in OR, if the vehicle speed exceeds
25 mph (40 km/h) the vehicle height will be automati-
cally lowered to NRH. Off-Road may not be available
due to vehicle payload, an instrument cluster display
message will be shown when this occurs.
• Refer to “Instrument Cluster Display” in “Getting To
Know Your Instrument Panel” for further information.
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.
• Aero Mode (Lowers the vehicle approximately .6 in
(15 mm)) – This position provides improved aerody-
namics 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: 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 on your Uconnect Radio.
• Entry/Exit Mode (Lowers the vehicle approximately
3 in (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 selec-
tor 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
6
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