2014 JEEP GRAND CHEROKEE engine

System Overview
This vehicle is equipped with a Diesel Exhaust Fluid (DEF) injection system and a
Selective Catalytic Reduction (SCR) catalyst to meet the emission requirements.
The DEF injection system consists of the following components:
• DEF tank
• DEF pump
• DEF injector
• Electronically-heated DEF lines• NOx sensors
• Temperature sensors
• SCR catalyst
The DEF injection system and SCR catalyst enable the achievement of diesel
emissions requirements; while maintaining outstanding fuel economy, drivability,
torque and power ratings.
NOTE:
• Your vehicle is equipped with a DEF injection system. You may occasionally hear
an audible clicking noise. This is normal operation.
• The DEF pump will run for a period of time after engine shutdown to purge the DEF
system. This is normal operation.
Adding Diesel Exhaust Fluid
The DEF gauge (located in the EVIC) will display the level of DEF remaining in the tank.
Completely fill the DEF tank through the diesel exhaust fluid fill location (located
behind the fuel door) at every maintenance interval or before if prompted by the
Electronic Vehicle Information Center (EVIC).
NOTE:
• The gauge may take up to five seconds
to update after adding a gallon or more
of Diesel Exhaust Fluid (DEF) to the
DEF tank. If you have a fault related to
the DEF system, the gauge may not
update to the new level. See your au-
thorized dealer for service.
• The DEF gauge may also not immedi-
ately update after a refill if the tem-
perature of the DEF fluid is below 12°F
(-11°C). The DEF line heater will pos-
sibly warm up the DEF fluid and allow
the gauge to update after a period of
run time. Under very cold conditions, it is possible that the gauge may not reflect
the new fill level for several drives.
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NOTE:
•
Driving conditions (altitude, vehicle speed, load, etc.) will effect the amount of DEF
that is used in your vehicle.
• Since DEF will begin to freeze at 12°F (-11°C), your vehicle is equipped with an
automatic DEF heating system. This allows the DEF injection system to operate
properly at temperatures below 12°F (-11°C). If your vehicle is not in operation for
an extended period of time with temperatures below 12°F (-11°C), the DEF in the
tank may freeze. If the tank is overfilled and freezes, it could be damaged.
Therefore, do not overfill the DEF tank. Extra care should be taken when filling
with portable containers to avoid overfilling. Note the level of the DEF gauge in
your EVIC. You may safely add a maximum of 2 gallons of DEF from portable
containers when your DEF gauge is reading ½ full.
Diesel Exhaust Fluid (DEF) Warning Messages
Your vehicle will begin displaying warning messages when the DEF level reaches a
driving range of approximately 500 miles (800 km).
If the following warning message sequence is ignored, your vehicle may not restart
unless DEF is added with in the displayed mileage shown in the EVIC message.
•Engine Will Not Restart in XXXX mi DEF Low Refill Soon– This message will display
when DEF driving range is less than 500 miles, DEF fluid top off is required with
in the displayed mileage. The message will be displayed in the EVIC during vehicle
start up with the current allowed mileage and accompanied by a single chime. The
remaining mileage can be pulled up anytime by way of the “Messages” list within
the EVIC.
•Engine Will Not Restart in XXXX mi Refill DEF– This message will display when DEF
driving range is less than 200 miles. It is also displayed at 150 miles and
100 miles. DEF fluid top off is required with in the displayed mileage. The
message will be displayed in the EVIC during vehicle start up with an updated
distance mileage, and it will be accompanied by a single chime. Stating at
100 miles, remaining range will be continuously displayed while operating the
vehicle. Chimes will also accompany the 75, 50 and 25 mile remaining distances.
The DEF Low telltale will be on continuously until DEF fluid is topped off.
•Engine Will Not Restart Refill DEF– This message will display when the DEF driving
range is less than 1 mile, DEF fluid top off is required or the engine will not restart.
The message will be displayed in the EVIC during vehicle start up, and it will be
accompanied by a single chime. The DEF Low telltale will be illuminated
continuously until DEF fluid tank is filled with a minimum of two gallons of DEF.
Diesel Exhaust Fluid (DEF) Fault Warning Messages
There are different messages which are displayed if the vehicle detects that the DEF
system has been filled with a fluid other than DEF, has experienced component
failures, or when tampering has been detected.
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When the DEF system needs to be serviced the following warnings will display:
•Service DEF System See Dealer– This message will display when the fault is initially
detected and each time the vehicle is started. The message will be accompanied
by a single chime and the Malfunction Indicator Light. We recommend you drive
to your nearest authorized dealer and have your vehicle serviced immediately. If
not corrected in 50 miles, vehicle will enter the “Engine Will not restart in XXX mi
Service DEF See dealer” warning stage and message.
•Incorrect DEF Detected See Dealer– This message will display if the DEF system has
detected the incorrect fluid has been introduced to the DEF tank. The message will
be accompanied by a single chime. We recommend you drive to your nearest
authorized dealer and have your vehicle serviced immediately. If not corrected in
50 miles, vehicle will enter the Engine Will not restart in XXX mi Service DEF See
dealer warning stage and message.
•Engine Will Not Restart in XXX mi Service DEF See Dealer– This message is first
displayed if the fault detected is not serviced after 50 miles of operation. It is also
displayed at 150 miles 125 miles and 100 miles. System service is required
within the displayed mileage. The message will be displayed in the EVIC during
vehicle start up with an updated distance mileage, and it will be accompanied by
a single chime. Starting at 100 miles, remaining range will be continuously
displayed while operating the vehicle. Chimes will also accompany the 75, 50 and
25 mile remaining distances. We recommend you drive to your nearest authorized
dealer and have your vehicle serviced immediately.
•Engine Will Not Restart Service DEF System See Dealer– This message will display
if the DEF system issue detected is not serviced during the allowed period. Your
engine will not restart unless your vehicle is serviced by your authorized dealer.
This message will be displayed when under 1 mile until the engine will not start
and each time the vehicle is started. The message will be continuously displayed
and be accompanied by a single chime. Your Malfunction Indicator Light will also
be continuously illumined. We highly recommend you drive to your nearest
authorized dealer immediately if the message appears while engine is running.
•Engine Will Not Start Service DEF System See Dealer– This message will display
when the fault detected is not serviced after the Engine will not restart Service DEF
System See Dealer message is displayed on the next subsequent restart. Your
engine will not start unless you vehicle is serviced by your authorized dealer. The
message will be accompanied by a single chime. Your Malfunction Indicator Light
will be continuously illuminated. If the message appears and you can not start the
engine, we recommend you have your vehicle towed to your nearest authorized
dealer immediately.
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- Malfunction Indicator Light (MIL)
The Malfunction Indicator Light (MIL) is part of an onboard diagnostic system called
OBD II that monitors engine and automatic transmission control systems. The light
will illuminate when the key is in the ON/RUN position before engine start. If the bulb
does not come on when turning the key from OFF to ON/RUN, have the condition
checked promptly.
Certain conditions, poor fuel quality, etc., may illuminate the light after engine start.
The vehicle should be serviced if the light stays on through several of your typical
driving cycles. In most situations, the vehicle will drive normally and will not require
towing.
CAUTION!
Prolonged driving with the Malfunction Indicator Light (MIL) on could cause
damage to the engine control system. It also could affect fuel economy and
driveability. If the MIL is flashing, severe catalytic converter damage and power
loss will soon occur. Immediate service is required.
WARNING!
A malfunctioning catalytic converter, as referenced above, can reach higher tempera-
tures than in normal operating conditions. This can cause a fire if you drive slowly or
park over flammable substances such as dry plants, wood, cardboard, etc. This could
result in death or serious injury to the driver, occupants or others.
- Electronic Stability Control (ESC) Activation/Malfunction Indicator Light
The “ESC Activation/Malfunction Indicator Light” in the instrument cluster will
come on when the ignition switch is turned to the ON/RUN position. It should go out
with the engine running. If the “ESC Activation/Malfunction Indicator Light” comes
on continuously with the engine running, a malfunction has been detected in the
ESC system. If this light remains on after several ignition cycles, and the vehicle has
been driven several miles (kilometers) at speeds greater than 30 mph (48 km/h), see
your authorized dealer as soon as possible to have the problem diagnosed and
corrected.
NOTE:
• The “ESC Off Indicator Light” and the “ESC Activation/Malfunction Indicator
Light” come on momentarily each time the ignition switch is turned to ON/RUN.
• Each time the ignition is turned to ON/RUN, the ESC system will be ON, even if
it was turned off previously.
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• The ESC system will make buzzing or clicking sounds when it is active. This is
normal; the sounds will stop when ESC becomes inactive following the maneuver
that caused the ESC activation.
• To improve the vehicle's traction when starting off in deep snow, sand or gravel, it
may be desirable to switch the ESC system to Partial Off mode by momentarily
pressing the ESC Off
switch located below the climate controls, on the switch
panel.
- Electronic Stability Control (ESC) OFF Indicator Light
This light indicates the Electronic Stability Control (ESC) is off.
- Charging System Light
This light shows the status of the electrical charging system. If the charging system
light remains on, it means that the vehicle is experiencing a problem with the
charging system.
We recommend you do not continue driving if the charging system light is on. Have
the vehicle serviced immediately.
- Oil Pressure Warning Light
This light indicates low engine oil pressure. If the light turns on while driving, stop
the vehicle and shut off the engine as soon as possible. A chime will sound for four
minutes when this light turns on.
We recommend you do not operate the vehicle or engine damage will occur. Have the
vehicle serviced immediately.
- Anti-Lock Brake (ABS) Light
This light monitors the Anti-Lock Brake System (ABS). The light will turn on when the
ignition switch is turned to the ON/RUN position and may stay on for as long as four
seconds.
If the ABS light remains on or turns on while driving, it indicates that the Anti-Lock
portion of the brake system is not functioning and that service is required. However,
the conventional brake system will continue to operate normally if the BRAKE
warning light is not on.
If the ABS light is on, the brake system should be serviced as soon as possible to
restore the benefits of Anti-Lock brakes. If the ABS light does not turn on when the
ignition switch is turned to the ON/RUN position, have the light inspected by an
authorized dealer.
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- Electronic Throttle Control (ETC) Light
This light informs you of a problem with the Electronic Throttle Control (ETC) system.
If a problem is detected, the light will come on while the engine is running. Cycle the
ignition key when the vehicle has completely stopped and the shift lever/gear selector
is placed in the PARK position; the light should turn off.
If the light remains lit with the engine running, your vehicle will usually be drivable;
however, see an authorized service center immediately. If the light is flashing when the
engine is running, immediate service is required and you may experience reduced
performance, an elevated/rough idle or engine stall and your vehicle may require towing.
- Air Bag Warning Light
This light will turn on for four to eight seconds as a bulb check when the ignition
switch is first turned to the ON/RUN position. If the light is either not on during
starting, stays on, or turns on while driving, have the system inspected at an
authorized dealer as soon as possible. Refer to “Occupant Restraints” in “Things To
Know Before Starting Your Vehicle” of your Owner’s Manual for further information.
NOTE:
The Air Bag System is designed to be maintenance free.
Oil Change Indicator
Message
If an “oil change” message (shown as Oil Change Due) appears and a single chime
sounds, it is time for your next required oil change:
1. Without pressing the brake pedal, push the ENGINE START/STOP button and
cycle the ignition to the ON/RUN position (do not start the engine.)
2. Fully depress the accelerator pedal, slowly, three times within 10 seconds.
3. Without pressing the brake pedal, push the ENGINE START/STOP button once to
return the ignition to the OFF/LOCK position.
- Engine Temperature Warning Light
This light warns of an overheated engine condition.
If the light turns on and a warning chime sounds while driving, safely pull over and
stop the vehicle. If the A/C system is on, turn it off. Also, shift the transmission into
NEUTRAL and idle the vehicle. If the temperature reading does not return to normal,
turn the engine off immediately.
We recommend that you do not operate the vehicle or engine damage will occur. Have
the vehicle serviced immediately.
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WARNING!
A hot engine cooling system is dangerous. You or others could be badly burned by
steam or boiling coolant.
- Transmission Temperature Warning Light
This light indicates that there is excessive transmission fluid temperature that might
occur with severe usage such as trailer towing. If this light turns on, stop the vehicle
and run the engine at idle, with the transmission in NEUTRAL, until the light turns
off. Once the light turns off, you may continue to drive normally.
CAUTION!
Continuous driving with the Transmission Temperature Warning Light illuminated
will eventually cause severe transmission damage or transmission failure.
WARNING!
If you continue operating the vehicle when the Transmission Temperature Warning
Light is illuminated you could cause the fluid to boil over, come in contact with hot
engine or exhaust components and cause a fire.
- High Beam Indicator
Indicates that headlights are on high beam.
- Front Fog Light Indicator
This indicator will illuminate when the front fog lights are on.
- Turn Signal Indicator
The arrows will flash with the exterior turn signals when the turn signal lever is
operated. A tone will chime, and an EVIC message will appear if either turn signal is
left on for more than 1 mile (1.6 km).
NOTE:
If either indicator flashes at a rapid rate, check for a defective outside light bulb.
- Vehicle Security Light
This light will flash rapidly for approximately 15 seconds when the vehicle theft
alarm is arming. The light will flash at a slower speed continuously after the alarm is
set. The security light will also come on for about three seconds when the ignition is
first turned on.
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- Park/Headlight ON Indicator
This indicator will illuminate when the park lights or headlights are turned on.
- Electronic Throttle Control (ETC) Light
This light informs you of a problem with the Electronic Throttle Control (ETC) system.
If a problem is detected, the light will come on while the engine is running. Cycle the
ignition when the vehicle has completely stopped and the shift lever is placed in the
PARK position; the light should turn off.
If the light remains lit with the engine running, your vehicle will usually be drivable;
however, see an authorized service center immediately. If the light is flashing when the
engine is running, immediate service is required and you may experience reduced
performance, an elevated/rough idle or engine stall and your vehicle may require towing.
- Electronic Speed Control ON Indicator
This indicator will illuminate when the electronic speed control has been activated to
the “ON” position.
- Electronic Speed Control SET Indicator
This indicator will illuminate when the cruising speed has been set.
- Hill Descent Control Indicator
This indicator will illuminate when Hill Descent Control (HDC) has been selected
using the Hill Descent Control Switch.
NOTE:
If equipped
- Door Ajar Indicator
This indicator will illuminate when a door(s) is left ajar and not fully closed.
- Windshield Washer Fluid Low Indicator
This indicator will illuminate when the windshield washer fluid is low.
- Liftgate Ajar Indicator *
This indicator will illuminate when the liftgate is left ajar and not fully closed.
NOTE:
* If equipped
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