engine JEEP GRAND CHEROKEE LIMITED 2019 Workshop Manual

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 may
operate only in certain gears, or may not shift at all. Vehicle
performance may be severely degraded and the engine
may stall. In some situations, the transmission may not
re-engage if the engine is turned off and restarted. The
Malfunction Indicator Light (MIL) may be illuminated. A
message in the instrument cluster will inform the driver of
the more serious conditions, and indicate what actions may
be necessary.
In the event of a momentary problem, the transmission can
be reset to regain all forward gears by performing the
following steps:
NOTE:In cases where the instrument cluster message
indicates the transmission may not re-engage after engine
shutdown, perform this procedure only in a desired loca-
tion (preferably, at an authorized dealer).
1. Stop the vehicle.
2. Shift the transmission into PARK, if possible. If not, shift the transmission to NEUTRAL. 3. Push and hold the ignition switch until the engine turns
OFF.
4. Wait approximately 30 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 an authorized dealer at your earliest
possible convenience. An authorized dealer has diagnostic
equipment to assess the condition of your transmission.
If the transmission cannot be reset, authorized dealer
service is required.
AutoStick
AutoStick is a driver-interactive transmission feature pro-
viding manual shift control, giving you more control of the
vehicle. AutoStick allows you to maximize engine braking,
eliminate undesirable upshifts and downshifts, and im-
prove overall vehicle performance. This system can also
provide you with more control during passing, city driv-
ing, cold slippery conditions, mountain driving, trailer
towing, and many other situations.
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Operation
To activate AutoStick mode, move the gear selector into the
MANUAL (M) position (beside the DRIVE position), or tap
one of the shift paddles on the steering wheel (if equipped).
Tapping the (-) shift paddle (if equipped) to enter
AutoStick mode will downshift the transmission to the
next lower gear, while tapping (+) to enter AutoStick mode
will retain the current gear. The current transmission gear
will be displayed in the instrument cluster. In AutoStick
mode, you can use the gear selector (in the MANUAL
position), or the shift paddles (if equipped), to manually
shift the transmission. Tapping the gear selector forward (-)
while in the MANUAL (M) position, or tapping the (-) shift
paddle (if equipped), will downshift the transmission to
the next lower gear. Tapping the selector rearward (+) (or
tapping the (+) shift paddle, if equipped) will command an
upshift.
NOTE:The shift paddles (if equipped) may be disabled (or
re-enabled, as desired) using the Uconnect Personal Set-
tings.
In AutoStick mode, the transmission will shift up or down
when (+/-) is manually selected by the driver (using the
gear selector, or the shift paddles, if equipped), unless an engine lugging or overspeed condition would result. It will
remain in the selected gear until another upshift or down-
shift is chosen, except as described below.
•
The transmission will automatically downshift as the
vehicle slows (to prevent engine lugging) and will
display the current gear.
• The transmission will automatically downshift to first
gear when coming to a stop. After a stop, the driver
should manually upshift (+) the transmission as the
vehicle is accelerated.
• You can start out, from a stop, in first or second gear (or
third gear, in 4LO range, Snow mode, or Sand mode).
Tapping (+) (at a stop) will allow starting in second gear.
Starting out in second or third gear can be helpful in
snowy or icy conditions.
• If a requested downshift would cause the engine to
over-speed, that shift will not occur.
• The system will ignore attempts to upshift at too low of
a vehicle speed.
• Holding the (-) paddle depressed (if equipped), or
holding the gear selector in the (-) position, will down-
shift the transmission to the lowest gear possible at the
current speed.
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FOUR WHEEL DRIVE OPERATION
Quadra-Trac I Operating Instructions/Precautions
— If Equipped
The Quadra-Trac I is a single-speed (HI range only) trans-
fer case, which provides convenient full-time four-wheel
drive. No driver interaction is required. The Brake Traction
Control (BTC) System, which combines standard ABS and
Traction Control, provides resistance to any wheel that is
slipping to allow additional torque transfer to wheels with
traction.
NOTE:The Quadra-Trac I system is not appropriate for
conditions where 4WD LOW range is recommended. Refer
to “Off-Road Driving Tips” in “Starting And Operating”
Quadra-Trac II Operating Instructions/Precautions
— If Equipped
The Quadra-Trac II transfer case is fully automatic in the
normal driving 4WD AUTO mode. The Quadra-Trac II
transfer case provides three mode positions:
• 4WD HI
• NEUTRAL
• 4WD LOW This transfer case is fully automatic in the 4WD HI mode.
When additional traction is required, the 4WD LOW
position can be used to lock the front and rear driveshafts
together and force the front and rear wheels to rotate at the
same speed. The 4WD LOW position is intended for loose,
slippery road surfaces only. Driving in the 4WD LOW
position 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 4WD HI
position 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 transfer case.
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.
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NOTE:Refer to “Selec-Terrain — If Equipped” for further
information on the various positions and their intended
usages.
Shifting Procedures
4WD HI To 4WD LOW
With the vehicle at speeds of 0 to 3 mph (0 to 5 km/h), the
ignition switch in the ON position or the engine running,
shift the transmission into “N”, and push the “4WD LOW”
button once on the transfer case switch. The “4WD LOW”
indicator light in the instrument cluster will begin to flash
and remain on solid when the shift is complete. NOTE:
If shift conditions/interlocks are not met, or a
transfer case motor temperature protection condition ex-
ists, a “For 4x4 Low Slow Below 3 mph (5 km/h) Put Trans
in “N” Press 4 Low” message will flash from the instru-
ment cluster display. Refer to “Instrument Cluster Display”
in “Getting To Know Your Instrument Panel” for further
information.
4WD LOW To 4WD HI
With the vehicle at speeds of 0 to 3 mph (0 to 5 km/h), the
ignition switch in the ON position or the engine running,
shift the transmission into NEUTRAL, and push the “4WD
LOW” button once on the transfer case switch. 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, or a transfer
case motor temperature protection condition exists, a
“For 4x4 High Slow Below 3 mph (5 km/h) Put Trans in
N push 4 Low” message will flash from the instrument
cluster display. 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 transfer case will not allow the shift.Shifting Into NEUTRAL (N)
WARNING!
You or others could be injured or killed if you leave the
vehicle unattended with the transfer case in the NEU-
TRAL (N) position without first fully engaging the
parking brake. The NEUTRAL (N) position disengages
both the front and rear drive shafts from the pow-
ertrain 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, with the engine running.
2. Press and hold the brake pedal.
3. Shift the transmission into NEUTRAL.
4. If vehicle is equipped with Quadra-Lift air suspension, ensure the vehicle is set to Normal Ride Height.
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5. Using a ballpoint pen or similar object, push and holdthe recessed transfer case 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. A
“NEUTRAL” message will appear in the instrument
cluster display. Refer to “Instrument Cluster Display” in
“Getting To Know Your Instrument Panel” for further
information.
6. After the shift is completed and the NEUTRAL (N) light stays on, release the NEUTRAL (N) button. 7. Shift the transmission into REVERSE.
8. Release the brake pedal for five seconds and ensure that
there is no vehicle movement.
9. Press and hold the brake pedal. Shift the transmission back into NEUTRAL.
10. Firmly apply the parking brake.
11. With the transmission and transfer case in NEUTRAL, push and hold the ENGINE START/STOP button until
the engine turns off.
12. Place the transmission gear selector in PARK. Release the brake pedal.
13. Push the ENGINE STOP/START button twice (without pressing the brake pedal), to turn the ignition to the
OFF mode.
14. Release the parking brake only when the vehicle is securely attached to a tow vehicle.

NOTE:If shift conditions/interlocks are not met, a “To
Tow Vehicle Safely, Read Neutral Shift Procedure in Own-
er ’s Manual” message will flash from the instrument
cluster display. Refer to “Instrument Cluster Display” in
“Getting To Know Your Instrument Panel” for further
information.
Shifting Out Of NEUTRAL (N)
Use the following procedure to prepare your vehicle for
normal usage.
1. Bring the vehicle to a complete stop.
2. Firmly apply the parking brake.
3. 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 transfer case NEUTRAL (N) button (located
by the selector switch) for one second. 7. When the NEUTRAL (N) indicator light turns off,
release the NEUTRAL (N) button.
8. After the NEUTRAL (N) button has been released, the transfer case will shift to the position indicated by the
selector switch.

Entry/Exit Mode, press the “Up” button once while in
Entry/Exit Mode or drive the vehicle over 15 mph
(24 km/h).
NOTE: Automatic lowering of the vehicle into Entry/Exit
Mode can be enabled through the Uconnect Touch-Screen
Radio. If this feature is enabled, the vehicle will only lower
if the gear selector is in PARK, the terrain switch is in
AUTO, the transfer-case is in AUTO” and the vehicle
level should be either in Normal or Aero Mode. The Vehicle
will not automatically lower if the air suspension level is in
Off Rd 2 or Off Rd 1. If the vehicle is equipped with
Intrusion Theft Module (ITM), the lowering will be sup-
pressed when the ignition is switched OFF and the door is
open to prevent setting the alarm off.
The Selec-Terrain switch will automatically change the
vehicle to the proper height based on the position of the
Selec-Terrain switch. The height can be changed from the
default Selec-Terrain setting by normal use of the air
suspension buttons. Refer to “Selec-Terrain” in “Starting
And Operating” for further information.
The system requires that the engine be running for all
changes. When lowering the vehicle all of the doors,
including the liftgate, 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/are closed.
The Quadra-Lift air suspension system uses a lifting and
lowering pattern which keeps the headlights from incor-
rectly shining into oncoming 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 Quadra-Lift air
suspension system has a feature which allows the auto-
matic leveling to be disabled. Refer to “Uconnect Settings”
in “Multimedia” for further information.
For further information refer to “Driving Tips” in “Starting
And Operating” section.
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.
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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:
Tire/Jack Mode
To assist with changing a spare tire, the air suspension
system has a feature which allows the automatic leveling to
be disabled. Refer to “Uconnect Settings” in “Multimedia”
for further information.
NOTE:This mode is intended to be enabled with engine
running.
Auto Entry/Exit Mode
To assist in entering and exiting the vehicle, the air
suspension system has a feature which automatically low-
ers the vehicle to entry/exit ride height. Refer to “Uconnect
Settings” in “Multimedia” for further information. NOTE:
This mode is intended to be enabled with engine
running.
Transport Mode
To assist with flat bed towing, 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 “Uconnect Settings” in “Multimedia” for further
information.
NOTE: This mode is intended to be enabled with engine
running.
Suspension Display Messages Mode
The “Suspension Display Messages” setting allows you to
only display suspension warnings. Refer to “Uconnect
Settings” in “Multimedia” for further information.
NOTE: This mode is intended to be enabled with engine
running.
Wheel Alignment Mode
Before performing a wheel alignment this mode must be
enabled. Refer to “Uconnect Settings” in “Multimedia” for
further information.
282 STARTING AND OPERATING

NOTE:This mode is intended to be enabled with engine
running.
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.
Instrument Cluster Display Messages
When the appropriate conditions exist, a message will
appear in the instrument cluster. Refer to “Instrument
Cluster Display” in “Getting To Know Your Instrument
Panel” for further information.
Operation
The indicator lamps 3 through 6 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 on the “UP” button, the highest flashing indicator
lamp is the position the system is working to achieve.
When lowering, if multiple indicators are flashing on the
DOWN button the lowest solid indicator lamp is the
position the system is working to achieve. Pushing the “UP” button once will move the suspension
one position higher from the current position, assuming all
conditions are met (i.e. engine running, speed below
threshold, etc). The “UP” button can be pushed 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 “DOWN” button once will move the suspen-
sion one position lower from the current level, assuming all
conditions are met (i.e. engine running, doors closed, speed
below threshold, etc). The “DOWN” button can be pressed
multiple times. Each push will lower the requested level by
one position down to a minimum of Park Mode or the
lowest position allowed based on current conditions (i.e.
vehicle speed, etc.)
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