2023 DODGE DURANGO check engine

96GETTING TO KNOW YOUR INSTRUMENT PANEL
ONBOARD DIAGNOSTIC SYSTEM — OBD II
Your vehicle is equipped with a sophisticated
Onboard Diagnostic system called OBD II. This
system monitors the performance of the
emissions, engine, and transmission control
systems. When these systems are operating
properly, your vehicle will provide excellent
performance and fuel economy, as well as engine
emissions well within current government
regulations.
If any of these systems require service, the OBD II
system will turn on the Malfunction Indicator Light
(MIL). It will also store diagnostic codes and other
information to assist your service technician in
making repairs. Although your vehicle will usually
be driveable and not need towing, see an
authorized dealer for service as soon as possible.
ONBOARD DIAGNOSTIC SYSTEM
(OBD II) C
YBERSECURITY
Your vehicle is required to have an OBD II and a
connection port to allow access to information
related to the performance of your emissions
controls. Authorized service technicians may need
to access this information to assist with the
diagnosis and service of your vehicle and
emissions system Ú page 153.
EMISSIONS INSPECTION AND
MAINTENANCE PROGRAMS
In some localities, it may be a legal requirement to
pass an inspection of your vehicle's emissions
control system. Failure to pass could prevent
vehicle registration.
For states that require an Inspection and
Maintenance (I/M), this check verifies
the Malfunction Indicator Light (MIL) is
functioning and is not on when the
engine is running, and that the OBD II system is
ready for testing.

Normally, the OBD II system will be ready. The
OBD II system may
not
be ready if your vehicle
was recently serviced, recently had a depleted
battery or a battery replacement. If the OBD II
system should be determined not ready for the
I/M test, your vehicle may fail the test.

CAUTION!
Prolonged driving with the MIL on could cause
further damage to the emission control
system. It could also affect fuel economy and
driveability. The vehicle must be serviced
before any emissions tests can be performed.
If the MIL is flashing while the vehicle is
running, severe catalytic converter damage
and power loss will soon occur. Immediate
service is required.
WARNING!
ONLY an authorized service technician should
connect equipment to the OBD II connection
port in order to read the VIN, diagnose, or
service your vehicle.
If unauthorized equipment is connected to the
OBD II connection port, such as a
driver-behavior tracking device, it may:
Be possible that vehicle systems,
including safety related systems, could be
impaired or a loss of vehicle control could
occur that may result in an accident
involving serious injury or death.
Access, or allow others to access, infor -
mation stored in your vehicle systems,
including personal information.

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GETTING TO KNOW YOUR INSTRUMENT PANEL97
Your vehicle has a simple ignition actuated test,
which you can use prior to going to the test station.
To check if your vehicle's OBD II system is ready,
you must do the following:

1. Cycle the ignition switch to the ON position, but do not crank or start the engine.

NOTE:If you crank or start the engine, you will have to
start this test over.
2. As soon as you cycle the ignition switch to the ON position, you will see the Malfunction
Indicator Light (MIL) symbol come on as part of
a normal bulb check. 3. Approximately 15 seconds later, one of two
things will happen:
The MIL will flash for about 10 seconds and
then return to being fully illuminated until
you turn OFF the ignition or start the engine.
This means that your vehicle's OBD II
system is not ready and you should not
proceed to the I/M station.
The MIL will not flash at all and will remain
fully illuminated until you place the ignition
in the off position or start the engine. This
means that your vehicle's OBD II system is
ready and you can proceed to the I/M
station. If your OBD II system is
not ready, you should see
an authorized dealer or repair facility. If your
vehicle was recently serviced or had a battery
failure or replacement, you may need to do nothing
more than drive your vehicle as you normally would
in order for your OBD II system to update. A
recheck with the previously mentioned test routine
may then indicate that the system is now ready.
Regardless of whether your vehicle's OBD II system
is ready or not, if the MIL is illuminated during
normal vehicle operation you should have your
vehicle serviced before going to the I/M station.
The I/M station can fail your vehicle because the
MIL is on with the engine running.3

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STARTING AND OPERATING99
To Turn Off The Engine Using The ENGINE START/
STOP Button

1. Place the gear selector in PARK, then push and release the ENGINE START/STOP button.
The ignition will return to the OFF position.

2. If the gear selector is not in PARK, the ENGINE START/STOP button must be held for two
seconds or three short pushes in a row with
the vehicle speed above 5 mph (8 km/h) before the engine will shut off. The ignition will
remain in the ACC position until the gear
selector is in PARK and the button is pushed
twice to the OFF position.
3. If the gear selector is not in PARK and the ENGINE START/STOP button is pushed once
with the vehicle speed above 5 mph (8 km/h), the instrument cluster will display a “ Vehicle
Not In Park ” message and the engine will
remain running. Never leave a vehicle out of
the PARK position, or it could roll.
NOTE:If the gear selector is not in PARK, and the ENGINE
START/STOP button is pushed once with the
vehicle speed below 5 mph (8 km/h), the engine
will shut off and the ignition will remain in the ACC
position. If vehicle speed drops below 1.2 mph
(1.9 km/h), the vehicle may AutoPark. See
AutoPark section for further details. ENGINE START/STOP Button Functions — With
Driver’s Foot OFF The Brake Pedal (In PARK Or
NEUTRAL Position)
The ENGINE START/STOP button operates similar
to an ignition switch. It has three positions: OFF,
ACC, and ON/RUN. To change the ignition positions
without starting the vehicle and use the
accessories, follow these directions:

1. Start with the ignition in the OFF position.

2. Push the ENGINE START/STOP button once to
place the ignition to the ACC position.
3. Push the ENGINE START/STOP button a second time to place the ignition to the ON/
RUN position.
4. Push the ENGINE START/STOP button a third time to return the ignition to the OFF position.
NOTE:Only press one pedal at a time while driving the
vehicle. Torque performance of the vehicle could
be reduced if both pedals are pressed at the same
time. If pressure is detected on both pedals simul -
taneously, a warning message will display in the
instrument cluster Ú page 79.
AUTOPARK
AutoPark is a supplemental feature to assist with
placing the vehicle in PARK (P) if the following
conditions occur. It is a back-up system and should
not be relied upon as the primary method by which
the driver shifts the vehicle into PARK.
The conditions under which AutoPark will engage
are outlined on the following pages.
WARNING!
Driver inattention could lead to failure to place
the vehicle in PARK. ALWAYS DO A VISUAL
CHECK that your vehicle is in PARK by verifying
that a solid (not blinking) “P” is indicated in
the instrument cluster display and on the gear
selector. If the "P" indicator is blinking, your
vehicle is not in PARK. As an added precau -
tion, always apply the parking brake when
exiting the vehicle.
AutoPark is a supplemental feature. It is not
designed to replace the need to shift your
vehicle into PARK. It is a back-up system and
should not be relied upon as the primary
method by which the driver shifts the vehicle
into PARK.
4

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100STARTING AND OPERATING
If the vehicle is not in PARK and the driver turns off
the engine, the vehicle may AutoPark.
AutoPark will engage when all of these conditions
are met:
Vehicle is equipped with an 8-speed transmis -
sion
Vehicle is not in PARK
Vehicle speed is 1.2 mph (1.9 km/h) or less
Ignition switched from ON/RUN to ACC
NOTE:For Keyless Enter ‘n Go™ equipped vehicles, the
engine will turn off and the ignition switch will
change to the ACC position. After 60 seconds, the
ignition switches to OFF automatically, unless the
driver turns the ignition switch OFF.
If the vehicle is not in PARK and the driver exits the
vehicle with the engine running, the vehicle may
AutoPark.
AutoPark will engage when all of these conditions
are met:
Vehicle is equipped with an 8-speed transmis -
sion
Vehicle is not in PARK
Vehicle speed is 1.2 mph (1.9 km/h) or less
Driver’s seat belt is unbuckled
Driver’s door is ajar
Brake pedal is not pressed The message “
AutoPark Engaged Shift To P Then
Shift To Gear ” will display in the instrument cluster.
NOTE:In some cases the ParkSense graphic will be
displayed in the instrument cluster. In these cases,
the gear selector must be returned to “P” to select
desired gear.
If the driver shifts into PARK while moving, the
vehicle may AutoPark.
AutoPark will engage ONLY when vehicle speed is
1.2 mph (1.9 km/h) or less.
The message “ Vehicle Speed Is Too High To Shift
To P ” will be displayed in the instrument cluster if
vehicle speed is above 1.2 mph (1.9 km/h).
4WD LOW — If Equipped
AutoPark will be disabled when operating the
vehicle in 4WD LOW.
The message “ AutoPark Disabled ” will be
displayed in the instrument cluster. Additional customer warnings will be given when
both of these conditions are met:Vehicle is not in PARK
Driver’s door is ajar
The message “ AutoPark Not Engaged” will be
displayed in the instrument cluster. A warning
chime will continue until you shift the vehicle into
PARK or the driver’s door is closed.
ALWAYS DO A VISUAL CHECK
that your vehicle is in
PARK by looking for the "P" in the instrument
cluster display and on the gear selector. As an
added precaution, always apply the parking brake
when exiting the vehicle.
EXTENDED PARK STARTING
NOTE:Extended Park condition occurs when the vehicle
has not been started or driven for at least 30 days.

1. Install a battery charger or jumper cables to the battery to ensure a full battery charge
during the crank cycle.

2. Press and hold the brake pedal while pushing the ENGINE START/STOP button once.
3. If the engine fails to start within 10 seconds, place the ignition in the OFF position, wait 10
to 15 seconds to allow the starter to cool, then
repeat the “Extended Park Starting”
procedure.
WARNING!
If vehicle speed is above 1.2 mph (1.9 km/h),
the transmission will default to NEUTRAL until
the vehicle speed drops below 1.2 mph
(1.9 km/h). A vehicle left in the NEUTRAL
position can roll. As an added precaution, always
apply the parking brake when exiting the vehicle.

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102STARTING AND OPERATING
(Continued)
(Continued)
NOTE:A new engine may consume some oil during its first
few thousand miles (kilometers) of operation. This
should be considered a normal part of the break-in
and not interpreted as a problem. Please check
your oil level with the engine oil indicator often
during the break-in period. Add oil as required.
PARKING BRAKE
Before leaving the vehicle, make sure that the
parking brake is fully applied and place the gear
selector in the PARK (P) position.
The foot operated parking brake is located below
the lower left corner of the instrument panel. To
apply the parking brake, firmly push the parking
brake pedal fully. To release the parking brake,
press the parking brake pedal a second time and
let your foot up as you feel the brake disengage.

Parking Brake
When the parking brake is applied with the ignition
switch in the ON/RUN position, the Brake Warning
Light in the instrument cluster will illuminate.
NOTE:
When the parking brake is applied and the
transmission is placed in gear, the Brake
Warning Light will flash. If vehicle speed is
detected, a chime will sound to alert the driver.
Fully release the parking brake before
attempting to move the vehicle.
This light only shows that the parking brake is
applied. It does not show the degree of brake
application.
When parking on a hill, it is important to turn the
front wheels toward the curb on a downhill grade
and away from the curb on an uphill grade. Apply
the parking brake before placing the gear selector
in PARK, otherwise the load on the transmission
locking mechanism may make it difficult to move
the gear selector out of PARK.
WARNING!
Never use the PARK position as a substitute
for the parking brake. Always apply the
parking brake fully when parked to guard
against vehicle movement and possible injury
or damage.
When leaving the vehicle, always remove the
key fob from the ignition and lock your vehicle.
Never leave children alone in a vehicle, or with
access to an unlocked vehicle. Allowing chil -
dren to be in a vehicle unattended is
dangerous for a number of reasons. A child or
others could be seriously or fatally injured.
Children should be warned not to touch the
parking brake, brake pedal or the gear
selector.
When leaving the vehicle, always make sure
the keyless ignition node is in the OFF posi -
tion, remove the key fob from the vehicle and
lock the vehicle.
Do not leave the key fob in or near the vehicle
or in a location accessible to children, and do
not leave the ignition of a vehicle equipped
with Keyless Enter ‘n Go™ in the ACC or ON/
RUN position. A child could operate power
windows, other controls, or move the vehicle.
Be sure the parking brake is fully disengaged
before driving; failure to do so can lead to
brake failure and a collision.
WARNING!

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STARTING AND OPERATING103
(Continued)
(Continued)
AUTOMATIC TRANSMISSION
You must press and hold the brake pedal while
shifting out of PARK.
Always fully apply the parking brake when
leaving your vehicle, or it may roll and cause
damage or injury. Also be certain to leave the
transmission in PARK. Failure to do so may
allow the vehicle to roll and cause damage or
injury.
CAUTION!
If the Brake Warning Light remains on with the
parking brake released, a brake system
malfunction is indicated. Have the brake system
serviced by an authorized dealer immediately.
WARNING!
Never use the PARK (P) position as a substi -
tute for the parking brake. Always apply the
parking brake fully when exiting the vehicle to
guard against vehicle movement and possible
injury or damage.
WARNING!
Your vehicle could move and injure you and
others if it is not in PARK. Check by trying to
move the transmission gear selector out of
PARK with the brake pedal released. Make
sure the transmission is in PARK before
exiting 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 indi -
cator solidly indicates PARK without blinking.
Ensure that the vehicle is completely stopped,
and the PARK position is properly indicated,
before exiting the vehicle.
It is dangerous to shift out of PARK or
NEUTRAL (N) if the engine speed is higher
than idle speed. If your foot is not firmly
pressing the brake pedal, the vehicle could
accelerate quickly forward or in reverse. You
could lose control of the vehicle and hit
someone or something. Only shift into gear
when the engine is idling normally and your
foot is firmly pressing the brake pedal.
WARNING!
Unintended movement of a vehicle could
injure those in or near the vehicle. As with all
vehicles, you should never exit a vehicle while
the engine is running. Before exiting a vehicle,
always come to a complete stop, then apply
the parking brake, shift the transmission into
PARK, and turn the ignition OFF. When the
ignition is in the OFF position, the transmis -
sion is locked in PARK, securing the vehicle
against unwanted movement.
When exiting the vehicle, always make sure
the ignition is in the OFF position, remove the
key fob from the vehicle, and lock the vehicle.
Never leave children alone in a vehicle, or with
access to an unlocked vehicle. Allowing chil -
dren to be in a vehicle unattended is
dangerous for a number of reasons. A child or
others could be seriously or fatally injured.
Children should be warned not to touch the
parking brake, brake pedal or the transmis -
sion gear selector.
Do not leave the key fob in or near the vehicle
(or in a location accessible to children), and do
not leave the ignition in the ACC or ON/RUN
position. A child could operate power
windows, other controls, or move the vehicle.
WARNING!
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112STARTING AND OPERATING
GUIDELINES FOR TRACK USE
NOTE:The standard Black Brembo Brake Pads are not
recommended for track use. Only the Red Brembo
Performance SRT brake pads are appropriate for
track use.
If your vehicle is equipped with Drive Modes,
they will alter the vehicle’s performance in
various driving situations. It is recommended
that your vehicle operates in SPORT or TRACK
modes during the track event.
Prior to each track event, verify all fluids are at
the correct levels.
Prior to each track event, verify the front and
rear brake pads have more than half pad thick -
ness remaining. If the brake pads require
changing, complete a brake burnish procedure
prior to track outing at full pace.
NOTE:Use of DOT 4 brake fluid is suggested for extended
track usage due to increased thermal capacity.
At the conclusion of each track event, it is
recommended that a brake bleed procedure is
performed to maintain the pedal feel and stop -
ping capability of your Brembo High Perfor -
mance brake system.
It is recommended that each track outing
should end with a minimum of one cooldown lap
using minimal braking.
It is recommended to check oil temperature
after each track session. If the oil is still above
225°F (107°C), do another cooldown lap if
possible, or keep the engine running and let idle
until below 225°F (107°C), in order to prevent
heat soaking of the engine. Ensure temperature
is reducing and do not leave vehicle gauges
unattended while idling just after a track
session.
It is recommended that the suspension system,
brake system, prop shaft, and half shaft boots
be checked for wear or damage after every track
event.
Track usage results in increased operating
temperatures of the engine, transmission, drive -
line and brake system. This may affect Noise
Vibration Harshness (NVH) countermeasures
designed into your vehicle. New components
may need to be installed to return the system to
the original NVH performance.
Tire pressure:
Recommended tire pressure of 33 psi
(230 kPa) when tires are cold, or below
42 psi (290 kPa) when hot.
NOTE:It is recommended that you target below 42 psi
(290 kPa) when tires are hot at the conclusion of
each track session. Starting at 33 psi (230 kPa)
cold and adjusting based on ambient and track
conditions is recommended. Tire pressure can be
monitored via the instrument cluster display and
can assist with adjustments.
Track burnishing your brakes
To avoid “green lining fade” during track use, the
brake pads and rotors must have a thermal
burnish for factory-installed components or when
new brake friction components are installed:

1. Use one track session to burnish brakes by driving at 75% speed. Brake at approximately
0.60 - 0.80g max without Anti-Lock Brake
System (ABS) intervention.

2. Complete one lap in this manner until you start smelling the brakes. Continue for another half
lap at speed, then complete a two lap
cooldown with minimal brake applications.
Ensure the brakes are not smoking. If they are,
complete another cooldown lap.
3. Getting the brakes to smoke is an indication that the brakes have overheated and may
negatively affect future track usage.

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114STARTING AND OPERATING
STOP/START SYSTEM — IF EQUIPPED
The Stop/Start function is designed to reduce fuel
consumption. The system will stop the engine
automatically during a vehicle stop if the required
conditions are met. Releasing the brake pedal or
pressing the accelerator pedal will automatically
re-start the engine.
This vehicle has been upgraded with a heavy duty
starter, enhanced battery, and other upgraded
engine parts, to handle the additional engine
starts.
AUTOSTOP MODE
The Stop/Start feature is enabled after every
normal customer engine start. At that time, the
system will go into STOP/START READY.
To Activate The Autostop Mode, The Following
Must Occur:
The system must be in STOP/START READY
state. A STOP/START READY message will be
displayed in the instrument cluster display
within the Stop/Start section Ú page 79.
The vehicle must be completely stopped.
The gear selector must be in a forward gear and
the brake pedal pressed.
The engine will shut down, the tachometer will
move to the zero position and the Stop/Start
telltale will illuminate indicating you are in Autostop. Customer settings will be maintained
upon return to an engine running condition.
POSSIBLE REASONS THE ENGINE DOES
N
OT AUTOSTOP
Prior to engine shut down, the system will check
many safety and comfort conditions to see if they
are fulfilled. Detailed information about the
operation of the Stop/Start system may be viewed
in the instrument cluster display Stop/Start
Screen. In the following situations, the engine will
not stop:
Driver’s seat belt is not buckled.
Driver’s door is not closed.
Battery temperature is too warm or cold.
Battery charge is low.
The vehicle is on a steep grade.
Cabin heating or cooling is in process and an
acceptable cabin temperature has not been
achieved.
HVAC is set to full defrost mode at a high blower
speed.
HVAC is set to MAX A/C.
Engine has not reached normal operating
temperature.
The transmission is not in a forward gear.
Hood is open.
Brake pedal is not pressed with sufficient pres -
sure.
Accelerator pedal input.
Engine temp is too high.
5 mph (8 km/h) threshold has not been
achieved from previous Autostop.
Steering angle is beyond threshold.
ACC is on and speed is set.
It may be possible for the vehicle to be driven
several times without the Stop/Start system going
into a STOP/START READY state under more
extreme conditions of the items listed above.
TO START THE ENGINE WHILE IN
A
UTOSTOP MODE
While in a forward gear, the engine will start when
the brake pedal is released or the accelerator
pedal is pressed. The transmission will
automatically re-engage upon engine restart.
Conditions That Will Cause The Engine To Start
Automatically While In Autostop Mode:
The transmission selector is moved out of
DRIVE.
To maintain cabin temperature comfort.
HVAC is set to full defrost mode.
HVAC system temperature or fan speed is
manually adjusted.

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