stop start JEEP GRAND CHEROKEE 2015 WK2 / 4.G Diesel Supplement Manual

vehicle placard or tire inflation pressure label, you should
determine the proper tire inflation pressure for those
tires.)
As an added safety feature, your vehicle has been
equipped with a Tire Pressure Monitoring System
(TPMS) that illuminates a low tire pressure telltale when
one or more of your tires is significantly under-inflated.
Accordingly, when the low tire pressure telltale illumi-
nates, you should stop and check your tires as soon as
possible, and inflate them to the proper pressure. Driving
on a significantly under-inflated tire causes the tire to
overheat and can lead to tire failure. Under-inflation also
reduces fuel efficiency and tire tread life, and may affect
the vehicle’s handling and stopping ability.
Please note that the TPMS is not a substitute for proper
tire maintenance, and it is the driver ’s responsibility to
maintain correct tire pressure, even if under-inflation has
not reached the level to trigger illumination of the TPMS
low tire pressure telltale.Your vehicle has also been equipped with a TPMS
malfunction indicator to indicate when the system is not
operating properly. The TPMS malfunction indicator is
combined with the low tire pressure telltale. When the
system detects a malfunction, the telltale will flash for
approximately one minute and then remain continuously
illuminated. This sequence will continue upon subse-
quent vehicle start-ups as long as the malfunction exists.
When the malfunction indicator is illuminated, the sys-
tem may not be able to detect or signal low tire pressure
as intended. TPMS malfunctions may occur for a variety
of reasons, including the installation of replacement or
alternate tires or wheels on the vehicle that prevent the
TPMS from functioning properly. Always check the
TPMS malfunction telltale after replacing one or more
tires or wheels on your vehicle, to ensure that the
replacement or alternate tires and wheels allow the TPMS
to continue to function properly.
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UNDERSTANDING YOUR INSTRUMENT PANEL 19

The DID Menu items consists of the following:
•Main Gauge
•MPH to km/h
•Vehicle Info•Terrain — If Equipped
•Driver Assist
•Fuel Economy
•Trip
•Stop/Start — If Equipped
•Audio
•Stored Messages
•Screen Setup
•Speed Warning — If Equipped
Driver Information Display (DID) Location
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UNDERSTANDING YOUR INSTRUMENT PANEL 23

The system allows the driver to select information by
pushing the following buttons mounted on the steering
wheel:•UP Arrow Button
Push and release the UP arrow button to scroll
upward through the main menu and sub-
menus (Main Gauge, MPH/km/h, Vehicle
Info, Terrain, Driver Assist, Fuel Economy, Trip
A, Trip B, Stop/Start, Audio, Stored Messages, Screen Set
Up).
•DOWN Arrow Button
Push and release the DOWN arrow button to
scroll downward through the main menu and
submenus (Main Gauge, MPH/km/h, Vehicle
Info, Terrain, Driver Assist, Fuel Economy, Trip
A, Trip B, Stop/Start, Audio, Stored Messages, Screen Set
Up).
DID Buttons
24 UNDERSTANDING YOUR INSTRUMENT PANEL

•Engine Will Not Restart Refill DEF
•Service DEF System See Dealer
•Incorrect DEF Detected See Dealer
•Engine Will Not Restart in XXX mi Service DEF See
Dealer
•Engine Will Not Restart Service DEF System See
Dealer
Engine Oil Life Reset
Oil Change Required
Your vehicle is equipped with an engine oil change
indicator system. The “Oil Change Required” message
will display in the DID for five seconds after a single
chime has sounded, to indicate the next scheduled oil
change interval. The engine oil change indicator systemis duty cycle based, which means the engine oil change
interval may fluctuate, dependent upon your personal
driving style.
Unless reset, this message will continue to display each
time you cycle the ignition to the ON/RUN position. To
turn off the message temporarily, push and release the
OK button. To reset the oil change indicator system (after
performing the scheduled maintenance), refer to the
following procedure.
Oil Change Reset Procedure
1. Without pushing the brake pedal, push and release the
ENGINE START/STOP button and place the ignition
to the ON/RUN position (do not start the engine).
2. Fully push the accelerator pedal, slowly, three times
within 10 seconds.
26 UNDERSTANDING YOUR INSTRUMENT PANEL

3. Without pushing the brake pedal, push and release the
ENGINE START/STOP button once to return the
ignition to the OFF/LOCK position.
NOTE:If the indicator message illuminates when you
start the vehicle, the oil change indicator system did not
reset. If necessary, repeat this procedure.
Fuel Filter Life Reset
The cluster will display the “Fuel System Service Re-
quired – See Dealer” or “Service Fuel Filter” message
when the fuel filter maintenance life is less than 5%. To
verify if this is a fuel filter change event, go to the “Fuel
Filter Life” screen in the “Vehicle Info” menu. When this
message appears, dealers should replace the fuel filters.
NOTE:Use the steering wheel DID controls for the
following procedure(s)
1. Without pushing the brake pedal, cycle the ignition to
the ON/RUN position (do not start the engine.)2. Push and release theDOWNarrow button to scroll
downward through the main menu to “Vehicle Info”.
3. Push and release theRIGHTarrow button to access
the ”Fuel Filter Life” screen.
4. Push and hold theOKbutton for one second to access
the ”Fuel Filter Life Reset” screen.
5. Push and release theDOWNarrow button to select
“Yes”, then press and release the OK button to select
reset of the Fuel Filter Life.
6. Push and release theUparrow button to exit the DID
screen.
NOTE:If the indicator message illuminates when you
start the vehicle, the fuel filter indicator system did not
reset. If necessary, repeat this procedure.
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UNDERSTANDING YOUR INSTRUMENT PANEL 27

STARTING AND OPERATING
CONTENTS
STARTING PROCEDURES.................37
▫Automatic Transmission.................38
▫Extreme Cold Weather...................38
▫Normal Starting Procedure — Keyless
Enter-N-Go...........................39
▫Starting Fluids........................40
NORMAL OPERATION...................41
▫Cold Weather Precautions................41
▫Engine Idling.........................43
▫Stopping The Engine....................43▫Cooling System Tips — Automatic
Transmission..........................44
ENGINE BLOCK HEATER — IF EQUIPPED....45
FUEL REQUIREMENTS...................46
▫Fuel Specifications.....................47
▫Biodiesel Fuel Requirements...............48
TRAILER TOWING......................51
▫Common Towing Definitions..............51
▫Trailer Hitch Classification...............554

•A Diesel Pre-Heat system both improves engine start-
ing and reduces the amount of white smoke generated
by a warming engine.
Normal Starting Procedure — Keyless Enter-N-Go
Observe the instrument panel cluster lights when starting
the engine.
NOTE:Normal starting of either a cold or a warm
engine is obtained without pumping or pressing the
accelerator pedal
1. Always apply the parking brake.
2. Press and hold the brake pedal while pushing the
ENGINE START/STOP button once.NOTE:A delay of the start of up to five seconds is
possible under very cold conditions. TheWait to Start
telltale will be illuminated during the pre-heat process,
When the engine Wait To Start light goes off the engine
will automatically crank.
CAUTION!
If the “Water in Fuel Indicator Light” remains on, DO
NOT START the engine before you drain the water
from the fuel filters to avoid engine damage. Refer to
“Maintenance Procedures/Draining Fuel/Water Sepa-
rator Filter” in “Maintaining Your Vehicle” for fur-
ther information.
3. The system will automatically engage the starter to
crank the engine. If the vehicle fails to start, the starter
will disengage automatically after 25 seconds.
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STARTING AND OPERATING 39

4. If you wish to stop the cranking of the engine prior to
the engine starting, push the button again.
5. Check that the oil pressure warning light has turned
off.
6. Release the parking brake.
Starting Fluids
The engine is equipped with a glow plug preheating
system. If the instructions in this manual are followed,
the engine should start in all conditions and no type of
starting fluid should be used.
WARNING!
•Do not leave children or animals inside parked
vehicles in hot weather. Interior heat build up may
cause serious injury or death.
(Continued)
WARNING!(Continued)
•When leaving 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 children 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 transmission 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 igni-
tion (of a vehicle equipped with Keyless Enter-N-
Go™) in the ACC or ON/RUN mode. A child could
operate power windows, other controls, or move
the vehicle.
40 STARTING AND OPERATING

Engine Idling
Avoid prolonged idling, long periods of idling may be
harmful to your engine because combustion chamber
temperatures can drop so low that the fuel may not burn
completely. Incomplete combustion allows carbon and
varnish to form on piston rings, cylinder head valves,
and injector nozzles. Also, the unburned fuel can enter
the crankcase, diluting the oil and causing rapid wear to
the engine.
Stopping The Engine
After full load operation, idle the engine for a few
minutes before shutting it down. This idle period will
allow the lubricating oil and coolant to carry excess heat
away from the turbocharger.
NOTE:Refer to the following chart for proper engine
shutdown.
Driving Condition LoadTurbocharger
TemperatureIdle Time (min.) Before
Engine Shutdown
Stop and Go Empty Cool None
Stop and Go Medium 0.5
Highway Speeds Medium Warm 1.0
City Traffic Maximum GCWR 1.5
Highway Speeds Maximum GCWR 2.0
Uphill Grade Maximum GCWR Hot 2.5
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STARTING AND OPERATING 43

NOTE:Under certain conditions the engine fan will run
after the engine is turned off. These conditions are under
high load and high temperature conditions.
Cooling System Tips — Automatic Transmission
To reduce the potential for engine and transmission
overheating in high ambient temperature conditions,
take the following actions:
•City Driving — When stopped, shift the transmission
into NEUTRAL and increase engine idle speed.
•Highway Driving — Reduce your speed.
•Up Steep Hills — Select a lower transmission gear.
•Air Conditioning — Turn it off temporarily.
NOTE:If the coolant temperature is too high the A/C
will automatically turn off.
Do Not Operate The Engine With Low Oil
Pressure
If the low oil pressure warning light turns on while
driving, stop the vehicle and shut down the engine as
soon as possible. A chime will sound when the light turns
on.
NOTE:Do not operate the vehicle until the cause is
corrected. This light does not show how much oil is in the
engine. The engine oil level must be checked under the
hood.
CAUTION!
If oil pressure falls to less than normal readings, shut
the engine off immediately. Failure to do so could
result in immediate and severe engine damage.
44 STARTING AND OPERATING