2012 JEEP GRAND CHEROKEE lock

AUTOMATIC TRANSMISSION
CAUTION!
Damage to the transmission may occur if the
following precautions are not observed:
•Shift into PARK only after the vehicle has
come to a complete stop.
• Shift into or out of REVERSE only after the
vehicle has come to a complete stop and
the engine is at idle speed.
• Do not shift between PARK, REVERSE,
NEUTRAL, or DRIVE when the engine is
above idle speed.
• Before shifting into any gear, make sure
your foot is firmly pressing the brake pedal.
NOTE:
You must press and hold the brake pedal
while shifting out of PARK.
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 apply the parking brake,
shift the transmission into PARK, and re-
move the key fob. Once the key fob is
removed, the shift lever is locked in the
PARK position, securing the vehicle
against unwanted movement.
• It is dangerous to move the shift lever out of
PARK or NEUTRAL 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 re-
verse. You could lose control of the vehicle
and hit someone or something. Only shift
into gear when the engine is idling normally
and when your foot is firmly pressing the
brake pedal.
(Continued)WARNING!(Continued)
• When leaving the vehicle, always remove
the key fob and lock your vehicle.
• Never leave children alone in a vehicle, or
with access to an unlocked vehicle. Allow-
ing children to be in a vehicle unattended is
dangerous for a number of reasons. A child
or others could be seriously or fatally in-
jured.
• Children should be warned not to touch the
parking brake, brake pedal or the shift
lever. Do not leave the key fob in or near
the vehicle, and do not leave Keyless
Enter-N-Go in the ACC or ON/RUN mode.
A child could operate power windows, other
controls, or move the vehicle.
Key Ignition Park InterlockThis vehicle is equipped with a Key Ignition
Park Interlock which requires the shift lever to
be placed in PARK before the ignition switch
can be turned to the LOCK/OFF position. The
key fob can only be removed from the ignition
221

when the ignition is in the LOCK/OFF position
and once removed the shift lever is locked in
PARK.
Brake/Transmission Shift Interlock
System
This vehicle is equipped with a Brake Transmis-
sion Shift Interlock System (BTSI) that holds the
shift lever in the PARK position unless the
brakes are applied. To move the shift lever out
of the PARK position, the ignition switch must
be turned to the ON/RUN position (engine
running or not) and the brake pedal must be
pressed.
Five-Speed Automatic Transmission
(3.6L and 3.0L Diesel Engine) — If
Equipped
The shift lever position display (located in the
instrument panel cluster) indicates the trans-
mission gear range. You must press the brake
pedal to move the shift lever out of the PARK
position (refer to “Brake/Transmission Shift In-
terlock System” in this section). To drive, move
the shift lever from PARK or NEUTRAL to the
DRIVE position.The electronically-controlled transmission pro-
vides a precise shift schedule. The transmis-
sion electronics are self-calibrating; therefore,
the first few shifts on a new vehicle may be
somewhat abrupt. This is a normal condition,
and precision shifts will develop within a few
hundred miles (kilometers).
Shifting from DRIVE to PARK or REVERSE
should be done only after the accelerator pedal
is released and the vehicle is stopped. Be sure
to keep your foot on the brake pedal when
moving the shift lever between these gears.
The transmission shift lever has only PARK,
REVERSE, NEUTRAL, and DRIVE shift posi-
tions. Manual downshifts can be made using
the Electronic Range Select (ERS) shift control
(refer to “Electronic Range Select (ERS)” in this
section). Moving the shift lever to the left or right
(-/+) while in the DRIVE position will select the
highest available transmission gear, and will
display that gear in the instrument cluster as 4,
3, 2, 1.
Gear RangesDO NOT race the engine when shifting from
PARK or NEUTRAL into another gear range.
PARK
This range supplements the parking brake by
locking the transmission. The engine can be
started in this range. Never attempt to use
PARK while the vehicle is in motion. Apply the
parking brake when leaving the vehicle in this
range.
When parking on a level surface, you may
place the shift lever in the PARK position first,
and then apply the parking brake.
Shift Lever
222

When parking on a hill, apply the parking brake
before placing the shift lever in PARK, other-
wise the load on the transmission locking
mechanism may make it difficult to move the
shift lever out of PARK. As an added precau-
tion, turn the front wheels toward the curb on a
downhill grade and away from the curb on an
uphill grade.
WARNING!
•Never use the PARK position as a substi-
tute for the parking brake. Always apply the
parking brake fully when parked to guard
against vehicle movement and possible
injury or damage.
• Your vehicle could move and injure you and
others if it is not completely in PARK.
Check by trying to move the shift lever
rearward (with the brake pedal released),
after you have placed it in PARK. Make
sure the transmission is in PARK before
leaving the vehicle.
(Continued)
WARNING!(Continued)
•It is dangerous to move the shift lever out of
PARK or NEUTRAL 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 some-
one or something. Only shift into gear when
the engine is idling normally and when your
foot is firmly pressing the brake pedal.
• 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 apply the parking brake,
shift the transmission into PARK, and re-
move the key fob. Once the key fob is
removed, the shift lever is locked in the
PARK position, securing the vehicle
against unwanted movement.
• When leaving the vehicle, always remove
the key fob and lock your vehicle.
(Continued)
WARNING!(Continued)
• Never leave children alone in a vehicle, or
with access to an unlocked vehicle.
• Allowing children to be in a vehicle unat-
tended is dangerous for a number of rea-
sons. A child or others could be seriously or
fatally injured. Children should be warned
not to touch the parking brake, brake pedal
or the shift lever. Do not leave the key fob in
or near the vehicle, and do not leave Key-
less Enter-N-Go in the ACC or ON/RUN
mode. A child could operate power win-
dows, other controls, or move the vehicle.
CAUTION!
•Before moving the shift lever out of PARK,
you must turn the ignition switch from the
LOCK/OFF position to the ON/RUN posi-
tion, and also press the brake pedal. Oth-
erwise, damage to the shift lever could
result.
(Continued)
223

of which forward gear is selected. PARK, RE-
VERSE, and NEUTRAL will continue to operate.
The Malfunction Indicator Light (MIL) may be
illuminated. Limp Home Mode allows the ve-
hicle to be driven to an authorized dealer for
service without damaging the transmission.
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 switch to the LOCK/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 transmis-
sion will return to normal operation.
NOTE:
Even if the transmission can be reset, we
recommend that you visit your authorized
dealer at your earliest possible conve-nience. 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 when the shift lever is in the DRIVE
position. For example, if you shift the transmis-
sion into 3 (third gear), the transmission will
never shift above third gear, but will shift down
into second and first gear normally.
You can switch between DRIVE and ERS mode
at any vehicle speed. When the shift lever is in
the DRIVE position, the transmission will oper-
ate automatically, shifting between all available
gears. Tapping the shift lever to the left (-) will
downshift the transmission, activate ERS mode,
display the current gear in the instrument clus-
ter, and maintain that gear as the top available
gear. Once in ERS mode, tapping the shift lever
to the left (-) or right (+) will change the top
available gear.
To exit ERS mode, simply press and hold the
shift lever to the right (+) until “D” is once again
displayed in the shift lever position indicator in
the instrument cluster.
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 an accident or personal injury.
Screen Display
12 34D
Actual Gear(s)
Allowed 1 1-2 1-3 1-4 1-5
NOTE:
To select the proper gear position for maxi-
mum deceleration (engine braking), simply
press and hold the shift lever to the left (-).
The transmission will shift to the range from
which the vehicle can best be slowed down.
225

Overdrive Operation
The automatic transmission includes an elec-
tronically controlled Overdrive (fifth gear). The
transmission will automatically shift into the
Overdrive gear if the following conditions are
present:
•the shift lever is in the DRIVE position,
• vehicle speed is sufficiently high, and
• the driver is not heavily pressing the accel-
erator.
Six-Speed Automatic Transmission
(5.7L Engine) — If Equipped
The shift lever position display (located in the
instrument panel cluster) indicates the trans-
mission gear range. You must press the brake
pedal to move the shift lever out of the PARK
position (refer to “Brake/Transmission Shift In-
terlock System” in this section). To drive, move
the shift lever from PARK or NEUTRAL to the
DRIVE position. The electronically-controlled transmission pro-
vides a precise shift schedule. The transmis-
sion electronics are self-calibrating; therefore,
the first few shifts on a new vehicle may be
somewhat abrupt. This is a normal condition,
and precision shifts will develop within a few
hundred miles (kilometers).
Shifting from DRIVE to PARK or REVERSE
should be done only after the accelerator pedal
is released and the vehicle is stopped. Be sure
to keep your foot on the brake pedal when
moving the shift lever between these gears.
The transmission shift lever has only PARK,
REVERSE, NEUTRAL, and DRIVE shift posi-
tions. Manual downshifts can be made using
the Electronic Range Select (ERS) shift control
(refer to “Electronic Range Select (ERS)” in this
section). Moving the shift lever to the left or right
(-/+) while in the DRIVE position will select the
highest available transmission gear, and will
display that gear in the instrument cluster as 6,
5, 4, 3, 2, 1.
Gear RangesDO NOT race the engine when shifting from
PARK or NEUTRAL into another gear range.
PARK
This range supplements the parking brake by
locking the transmission. The engine can be
started in this range. Never attempt to use
PARK while the vehicle is in motion. Apply the
parking brake when leaving the vehicle in this
range.
When parking on a level surface, you may
place the shift lever in the PARK position first,
and then apply the parking brake.
Shift Lever
226

When parking on a hill, apply the parking brake
before placing the shift lever in PARK, other-
wise the load on the transmission locking
mechanism may make it difficult to move the
shift lever out of PARK. As an added precau-
tion, turn the front wheels toward the curb on a
downhill grade and away from the curb on an
uphill grade.
WARNING!
•Never use the PARK position as a substi-
tute for the parking brake. Always apply the
parking brake fully when parked to guard
against vehicle movement and possible
injury or damage.
• Your vehicle could move and injure you and
others if it is not completely in PARK.
Check by trying to move the shift lever
rearward (with the brake pedal released),
after you have placed it in PARK. Make
sure the transmission is in PARK before
leaving the vehicle.
(Continued)
WARNING!(Continued)
•It is dangerous to move the shift lever out of
PARK or NEUTRAL 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 some-
one or something. Only shift into gear when
the engine is idling normally and when your
foot is firmly pressing the brake pedal.
• 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 apply the parking brake,
shift the transmission into PARK, and re-
move the key fob. Once the key fob is
removed, the shift lever is locked in the
PARK position, securing the vehicle
against unwanted movement.
• When leaving the vehicle, always remove
the key fob and lock your vehicle.
(Continued)
WARNING!(Continued)
• Never leave children alone in a vehicle, or
with access to an unlocked vehicle. Allow-
ing children to be in a vehicle unattended is
dangerous for a number of reasons. A child
or others could be seriously or fatally in-
jured. Children should be warned not to
touch the parking brake, brake pedal or the
shift lever. Do not leave the key fob in or
near the vehicle, and do not leave Keyless
Enter-N-Go in the ACC or ON/RUN mode.
A child could operate power windows, other
controls, or move the vehicle.
CAUTION!
•Before moving the shift lever out of PARK,
you must turn the ignition switch from the
LOCK/OFF position to the ON/RUN posi-
tion, and also press the brake pedal. Oth-
erwise, damage to the shift lever could
result.
(Continued)
227

If the transmission operating temperature ex-
ceeds normal operating limits, the powertrain
controller will modify the transmission shift
schedule and expand the range of torque con-
verter clutch engagement. This is done to pre-
vent transmission damage due to overheating.
If the transmission becomes extremely hot, the
“Transmission Temperature Warning Light” may
illuminate and the transmission may downshift
out of Overdrive until the transmission cools
down.
NOTE:
Use caution when operating a heavily
loaded vehicle at low speeds (such as tow-
ing a trailer up a steep grade, or in stop-
and-go traffic) during hot weather. In these
conditions, torque converter slip can im-
pose a significant additional heat load on
the cooling system. Downshifting the trans-
mission to the lowest possible gear (when
climbing a grade), or shifting to NEUTRAL
(when stopped in heavy traffic) can help to
reduce this excess heat generation.
During cold temperatures, transmission opera-
tion may be modified depending on engine andtransmission temperature as well as vehicle
speed. This feature improves warm up time of
the engine and transmission to achieve maxi-
mum efficiency. Engagement of both the torque
converter clutch and the top overdrive gear are
inhibited until the transmission fluid is warm
(refer to the “Note” under “Torque Converter
Clutch” in this section). During extremely cold
temperatures (-16°F [-27°C] or below), opera-
tion may briefly be limited to first and direct
gears only. Normal operation will resume once
the transmission temperature has risen to a
suitable level.
Transmission Limp Home Mode
Transmission function is monitored electroni-
cally for abnormal conditions. If a condition is
detected that could result in transmission dam-
age, Transmission Limp Home Mode is acti-
vated. In this mode, the transmission remains in
direct 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 transmission.
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 switch to the LOCK/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 transmis-
sion will return to normal operation.
NOTE:
Even if the transmission can be reset, we
recommend that you visit your authorized
dealer at your earliest possible conve-
nience. 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.
229

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.WARNING!
You or others could be injured if you leave the
vehicle unattended with the transfer case in
the N (Neutral) position without first fully en-
gaging the parking brake. The transfer case N
(Neutral) position disengages both the front
and rear driveshafts from the powertrain and
will allow the vehicle to move regardless of the
transmission position. The parking brake
should always be applied when the driver is
not in the vehicle.
Shift Positions
For additional information on the appropriate
use of each transfer case mode position, see
the information below:
4WD AUTO
This range is used on surfaces such as ice,
snow, gravel, sand, and dry hard pavement.NOTE:
Refer to “Selec-Terrain
– If Equipped” in
“Starting and Operating” for further infor-
mation on the various positions and their
intended usages.
NEUTRAL
This range disengages both the front and rear
driveshafts from the powertrain. It is to be used
for flat towing behind another vehicle. Refer to
“Recreational Towing” in “Starting and Operat-
ing” for further information.
4WD LOW
This range is for low speed four-wheel drive. It
locks the front and rear driveshafts together
and forces the front and rear wheels to rotate at
the same speed. It provides additional traction
and maximum pulling power for loose, slippery
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.
232