engine JEEP CHEROKEE 2017 KL / 5.G Repair Manual

DRIVE (D)
This range should be used for most city and highway
driving. It provides the smoothest upshifts and downshifts,
and the best fuel economy. The transmission automatically
upshifts through all forward gears. The DRIVE position
provides optimum driving characteristics under all normal
operating conditions.
When frequent transmission shifting occurs (such as when
operating the vehicle under heavy loading conditions, in
hilly terrain, traveling into strong head winds, or while
towing a heavy trailer), use the Electronic Range Select
(ERS) shift control (refer toElectronic Range Select (ERS)
Operation in this section for further information) to select
a lower gear range. Under these conditions, using a lower
gear range will improve performance and extend transmis-
sion life by reducing excessive shifting and heat buildup.
If the transmission temperature exceeds normal operating
limits, the transmission controller may modify the trans-
mission shift schedule, reduce engine torque, and/or ex-
pand the range of torque converter clutch engagement.
This is done to prevent transmission damage due to
overheating. If the transmission becomes extremely hot, the “Transmis-
sion Temperature Warning Light” may illuminate and the
transmission may operate differently until the transmission
cools down.
During cold temperatures, transmission operation may be
modified depending on engine and transmission tempera-
ture as well as vehicle speed. This feature improves warm
up time of the engine and transmission to achieve maxi-
mum efficiency. Engagement of the torque converter
clutch, and shifts into 8th or 9th gear, are inhibited until the
transmission fluid is warm (refer to the note within the
“Torque Converter Clutch” topic in this section). Normal
operation will resume once the transmission temperature
has risen to a suitable level.
SPORT — If Equipped
This mode alters the transmission’s automatic shift sched-
ule for sportier driving. Upshift speeds are increased to
make full use of available engine power.
SPORT mode is activated using the rotary switch on the
center console. Refer to
Selec-Terrainin this section for
further information.
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Transmission Limp Home Mode
Transmission function is monitored electronically for ab-
normal conditions. If a condition is detected that could
result in transmission damage, Transmission Limp Home
Mode is activated. In this mode, the transmission remains
in fourth gear regardless of which forward gear is selected.
PARK, REVERSE, and NEUTRAL will continue to operate.
The Malfunction Indicator Light (MIL) may be illuminated.
Limp Home Mode allows the vehicle to be driven to an
authorized dealer for service without damaging the trans-
mission.
In the event of a momentary problem, the transmission can
be reset to regain all forward gears by performing the
following steps:
1. Stop the vehicle.
2. Shift the transmission into PARK.
3. Turn the ignition to the OFF position.
4. Wait approximately 10 seconds.5. Restart the engine.
6. Shift into the desired gear range. If the problem is no
longer detected, the transmission will return to normal
operation.
NOTE: Even if the transmission can be reset, we recom-
mend that you visit your authorized dealer at your earliest
possible convenience. Your authorized dealer has diagnos-
tic equipment to determine if the problem could recur. If
the transmission cannot be reset, authorized dealer service
is required.
Electronic Range Select (ERS) Operation
The Electronic Range Select (ERS) shift control allows the
driver to limit the highest available gear. For example, if
you set the transmission gear limit to 5 (fifth gear), the
transmission will not shift above fifth gear, but will shift
through the lower gears normally.
You can switch between DRIVE and ERS mode at any
vehicle speed. When the gear selector is in the DRIVE
position, the transmission will operate automatically, shift-
ing between all available gears.
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Moving the gear selector to the ERS position (beside DRIVE)
will activate ERS mode, display the current gear in the
instrument cluster, and set that gear as the top available gear.
Once in ERS mode, moving the gear selector forward (-) or
rearward (+) will change the top available gear.
To exit ERS mode, simply return the gear selector to the
DRIVE position.
WARNING!
Do not downshift for additional engine braking on a
slippery surface. The drive wheels could lose their grip
and the vehicle could skid, causing a collision or
personal injury.
NOTE: To select the proper gear position for maximum
deceleration (engine braking), move the gear selector into
the ERS position, then simply press and hold it forward (-).
The transmission will shift to the range from which the
vehicle can best be slowed down.
Torque Converter Clutch
A feature designed to improve fuel economy has been
included in the automatic transmission on your vehicle. A
clutch within the torque converter engages automatically
at calibrated speeds. This may result in a slightly different
feeling or response during normal operation in the upper
gears. When the vehicle speed drops or during some
accelerations, the clutch automatically disengages.
NOTE: The torque converter clutch will not engage until
the transmission fluid is warm (usually after 1 to 3 miles [2
to 5 km] of driving). Because the engine speed is higher
when the torque converter clutch is not engaged, it may
seem as if the transmission is not shifting properly when
cold. This is normal. The torque converter clutch will
function normally once the transmission is sufficiently
warm.
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The Four-Wheel Drive is fully automatic in the normal
driving mode. The Selec-Terrain buttons provide three
selectable mode positions:
•4WD LOW
• REAR LOCK (If Equipped)
• NEUTRAL When additional traction is required, the 4WD LOW range
position can be used to provide an additional gear reduc-
tion which allows for increased torque to be delivered to
both the front and rear wheels. 4WD LOW is intended for
loose, slippery road surfaces only. Driving in 4WD LOW on
dry, hard-surfaced roads may cause increased tire wear and
damage to driveline components.
When operating your vehicle in 4WD LOW, the engine
speed is approximately three times that of the normal
driving mode 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 will adversely affect shifting and cause
damage to the driveline components.
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.
2-Speed 4x4 Switch (with Rear Lock)
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Shift Positions
For additional information on the appropriate use of each
4WD system mode position, see the information below:
NEUTRAL
This range disengages the driveline from the powertrain. It
is to be used for flat towing behind another vehicle. Refer
to “Recreational Towing” in “Starting And Operating” for
further information.
WARNING!
You or others could be injured or killed if you leave the
vehicle unattended with the power transfer unit in the
NEUTRAL (N) position without first fully engaging
the parking brake. The NEUTRAL (N) position disen-
gages both the front and rear driveshafts from the
powertrain and will allow the vehicle to roll, even if
the transmission is in PARK. The parking brake
should always be applied when the driver is not in the
vehicle.
4WD LOW
This range is for low speed four-wheel drive. It provides an
additional gear reduction which allows for increased
torque to be delivered to both the front and rear wheels
while providing maximum pulling power for loose, slip-
pery road surfaces only. Do not exceed 25 mph (40 km/h).
NOTE:Refer to “Selec-Terrain – If Equipped” for further
information on the various positions and their intended
usages.
Shifting Procedures
Shifting Into 4X4 LOW
With the vehicle at speeds of 0 to 3 mph (0 to 5 km/h), the
ignition in the ON mode and the engine running, shift the
transmission into NEUTRAL, and push the “4WD LOW”
button once. The “4WD LOW” indicator light in the
instrument cluster will begin to flash and remain on solid
when the shift is complete.
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NOTE:If shift conditions/interlocks are not met a mes-
sage will flash from the instrument cluster display with
instructions on how to complete the requested shift. Refer
to “Instrument Cluster Display” in “Getting To know Your
Instrument Panel” for further information.
Shifting Out Of 4X4 LOW
With the vehicle at speeds of 0 to 3 mph (0 to 5 km/h), the
ignition in the ON mode and the engine running, shift the
transmission into NEUTRAL, and push the “4WD LOW”
button once. The “4WD LOW” indicator light in the
instrument cluster will flash and go out when the shift is
complete.
NOTE:
• If shift conditions/interlocks are not met, a message will
flash from the instrument cluster display with instruc-
tions on how to complete the requested shift. Refer to
“Instrument Cluster Display” in “Getting To Know Your
Instrument Panel” for further information.
• Shifting into or out of 4WD LOW is possible with the
vehicle completely stopped; however, difficulty may
occur due to the mating clutch teeth not being properly
aligned. Several attempts may be required for clutch
teeth alignment and shift completion to occur. The
preferred method is with the vehicle rolling 0 to 3 mph
(0 to 5 km/h). If the vehicle is moving faster than 3 mph
(5 km/h), the 4WD system will not allow the shift.
Selec-Terrain Switch
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NEUTRAL Shift Procedure
WARNING!
You or others could be injured or killed if you leave the
vehicle unattended with the power transfer unit in the
NEUTRAL (N) position without first fully engaging
the parking brake. The NEUTRAL (N) position disen-
gages both the front and rear driveshafts from the
powertrain and will allow the vehicle to roll, even if
the transmission is in PARK. The parking brake
should always be applied when the driver is not in the
vehicle.
1. Bring the vehicle to a complete stop and shift the transmission to PARK.
2. Turn the engine OFF.
3. Turn the ignition to the ON/RUN mode, but do not start the engine.
4. Press and hold the brake pedal.
5. Shift the transmission into NEUTRAL.
6. Using a ballpoint pen or similar object, push and hold the recessed power transfer unit NEUTRAL (N) button (located by the selector switch) for four seconds. The
light behind the NEUTRAL (N) symbol will blink,
indicating shift in progress. The light will stop blinking
(stay on solid) when the shift to NEUTRAL (N) is
complete.
7. After the shift is completed and the NEUTRAL (N) light stays on, release the NEUTRAL (N) button.
8. Start the engine.
9. Release the parking brake.
10. Shift the transmission into REVERSE.
Neutral Switch
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11. Release the brake pedal for five seconds and ensurethat there is no vehicle movement.
12. Shift the transmission to NEUTRAL.
13. Apply the parking brake.
14. Shift the transmission into PARK, turn the engine OFF, and remove the key kob.
Repeat steps 1-7 to shift out of NEUTRAL.
NOTE: When towing this vehicle behind another vehicle,
the Mopar flat tow wiring kit must be used, and the
parking brake must be released. Refer to Recreational
Towing inStarting and Operating for further instruc-
tions.
Rear Electronic Locker (E-Locker) System —
If Equipped
The Rear E-Locker System features a mechanical locking
rear differential to provide better traction in the 4WD LOW
position. The “REAR LOCK” button is on the Selec-Terrain
Knob. Activating The Rear E-Locker
To activate the Rear E-Locker System, the following condi-
tions must be met:
1. The 4WD system must be in 4WD LOW.
2. The ignition in the ON mode and the engine running.
3. Vehicle speed must be below 15 MPH (24 km/h).
4. To engage Rear E-Locker, push the REAR LOCK button
once.
Deactivating The Rear E-Locker System
To deactivate the Rear E-Locker System, the following
conditions must be met:
1. Rear E-Locker must be engaged, and the REAR LOCK indicator light on.
2. The ignition in the ON mode and the engine running.
3. To disengage Rear E-Locker, push the REAR LOCK button once.
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Selec-Terrain offers the following modes:
•Auto — Fully automatic full time four-wheel drive
operation can be used on and off road. Balances traction
with seamless steering feel to provide improved han-
dling and acceleration over two-wheel drive vehicles.
• Snow — Tuning set for additional stability in inclement
weather. Use on and off road on loose traction surfaces
such as snow. When in SNOW mode (depending on
certain operating conditions), the transmission may use
second gear (rather than first gear) during launches, to
minimize wheel slippage.
• Sport — This mode alters the transmission’s automatic
shift schedule for sportier driving. Upshift speeds are
increased to make full use of available engine power.
NOTE: SPORT mode is not available when 4WD LOW is
selected. •
Sand/Mud — Off road calibration for use on low
traction surfaces such as mud, sand, or wet grass.
Driveline is maximized for traction. Some binding may
be felt on less forgiving surfaces. The electronic brake
controls are set to limit traction control management of
throttle and wheel spin.
• Rock — Off-road calibration only available in 4WD
LOW range. Traction based tuning with improved steer-
ability for use on high traction off-road surfaces. Use for
low speed obstacles such as large rocks, deep ruts, etc.
NOTE:
• Rock mode is only available on the vehicles equipped
with the Off-Road package.
• Activate the Hill Descent Control or Selec Speed Control
for steep downhill control. See “Electronic Brake Control
System” in “Safety” for further information.
Instrument Cluster Display Messages
When the appropriate conditions exist, a message will ap-
pear in the instrument cluster. Refer to “Instrument Cluster
Display” in “Getting To Know Your Instrument Panel” for
further information.
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STOP/START SYSTEM — IF EQUIPPED
The Stop/Start function was developed to reduce fuel
consumption. The system will stop the engine automati-
cally during a vehicle stop if the required conditions are
met. Releasing the brake pedal or pressing the accelerator
pedal will automatically restart the engine.
Automatic Mode
The Stop/Start feature is enabled after every normal cus-
tomer engine start. At that time, the system will go into
STOP/START READY and if all other conditions are met,
can go into a STOP/START AUTOSTOP ACTIVE “Au-
tostop” mode.
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.
Refer to “Instrument Cluster Display” in “Getting To
Know Your Instrument Panel” for further information.
• The vehicle must be completely stopped.
• The gear selector must be in a forward gear and the
brake pedal depressed. 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 Not 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 set to MAX A/C.
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