automatic transmission JEEP CHEROKEE 2023 User Guide
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Page 86 of 276

84STARTING AND OPERATING
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.
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 AutoStick
shift control to select a lower gear
Úpage 84. Under
these conditions, using a lower gear will improve
performance and extend transmission life by reducing
excessive shifting and heat buildup.
If the transmission temperature exceeds normal operating
limits, the transmission controller may modify the
transmission shift schedule, reduce engine torque, and/or
expand the range of torque converter clutch engagement.
This is done to prevent transmission damage due to
overheating.
If the transmission becomes extremely hot, the
Transmission 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
temperature as well as vehicle speed. This feature
improves warm-up time of the engine and transmission to
achieve maximum efficiency. Engagement of the torque
converter clutch, and shifts into EIGHTH or NINTH gear,
are inhibited until the transmission fluid is warm
Úpage 85. 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
schedule 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
Úpage 88.
Transmission Limp Home Mode
Transmission function is monitored electronically for
abnormal 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 a fixed gear, or may remain in NEUTRAL.
The Malfunction Indicator Light (MIL) may be illuminated.
Limp Home mode may allow 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 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 recommend 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
providing manual shift control, giving you more control of
the vehicle. AutoStick allows you to maximize engine
braking, eliminate undesirable upshifts and downshifts,
and improve overall vehicle performance. This feature can
also provide you with more control during passing, city
driving, cold slippery conditions, mountain driving, trailer
towing and many other situations.
Operation
When the gear selector is in the AutoStick position (beside
the DRIVE position), it can be moved forward and
rearward. This allows the driver to manually select the
transmission gear being used. Moving the gear selector
forward (-) triggers a downshift, and rearward (+) an
upshift. The current gear is displayed in the instrument
cluster.
NOTE:
In AutoStick mode, the transmission will only shift up or
down when the driver moves the gear selector rearward (+)
or forward (-), except as follows:
The transmission will automatically upshift when
necessary to prevent engine overspeed.
The transmission will automatically downshift as the
vehicle slows (to prevent engine lugging) and will
display the current gear.
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STARTING AND OPERATING85
The transmission will automatically downshift to FIRST or
SECOND gear (depending on model) 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. Starting out in SECOND gear can be helpful in
snow or icy conditions. Tap the gear selector forward or
rearward to select the desired gear after the vehicle is
brought to a stop.
If a requested downshift would cause the engine to
overspeed, that shift will not occur.
The system will ignore attempts to upshift at too low of
a vehicle speed.
Avoid using Cruise Control when AutoStick is engaged
because the transmission will not shift automatically.
Transmission shifting will be more noticeable when
AutoStick is enabled.
The system may revert to automatic shift mode if a
fault or overheat condition is detected.
To disengage AutoStick mode, return the gear selector to
the DRIVE position. You can shift in or out of the AutoStick
position at any time without taking your foot off the
accelerator pedal.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 trans -
mission 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.
FOUR-WHEEL DRIVE OPERATION
1-SPEED FOUR-WHEEL DRIVE
(4WD) — IF EQUIPPED
This feature provides on-demand four-wheel drive (4WD).
The system is automatic with no driver inputs or additional
driving skills required. Under normal driving conditions,
the front wheels provide most of the traction. If the front
wheels begin to lose traction, power is shifted
automatically to the rear wheels. The greater the front
wheel traction loss, the greater the power transfer to the
rear wheels. Additionally, on dry pavement under heavy throttle input
(where one may have no wheel spin), torque will be sent to
the rear in a preemptive effort to improve vehicle launch
and performance characteristics.
2-SPEED FOUR-WHEEL DRIVE
(4WD) — I
F EQUIPPED
2-Speed 4x4 Switch
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.
CAUTION!
All wheels must have the same size and type tires.
Unequal tire sizes must not be used. Unequal tire size
may cause failure of the power transfer unit.
4
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86STARTING AND OPERATING
2-Speed 4x4 Switch (with Rear Lock)
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)
N (NEUTRAL)
When additional traction is required, the 4WD LOW range
position can be used to provide an additional gear
reduction, 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.
SHIFT POSITIONS
For additional information on the appropriate use of each
4WD system mode position, see the information below:
N (NEUTRAL)
This range disengages the driveline from the powertrain. It
is to be used for flat towing behind another vehicle
Úpage 120.
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, slippery
road surfaces only. Do not exceed 25 mph (40 km/h).
NOTE:For further information on the various positions and their
intended uses Úpage 88.
SHIFTING PROCEDURES
Shifting Into 4WD LOW
With the vehicle at speeds of 0 to 3 mph (0 to 5 km/h), the
ignition in the ON/RUN position and the engine running,
shift the transmission into NEUTRAL (N), 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.
4WD LOW Button
NOTE:
If shift conditions/interlocks are not met, a message will
flash from the instrument cluster display with instructions
on how to complete the requested shift
Úpage 63.
WARNING!
You or others could be injured or killed if you leave the
vehicle unattended with the power transfer unit in the N
(NEUTRAL) position without first fully engaging the
parking brake. The N (NEUTRAL) position disengages
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,
unless the vehicle is otherwise secured (for example,
when attached to the tow vehicle).
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88STARTING AND OPERATING
SELEC-TERRAIN
DESCRIPTION
Selec-Terrain allows the driver to specify the driving
surface to allow the vehicle systems to provide the best
performance possible across a wide range of conditions.
Rotate the Selec-Terrain knob to select the desired mode.
Selec-Terrain Switch
Selec-Terrain offers the following modes:
AUTO — Fully automatic, full-time four-wheel drive oper -
ation can be used on and off-road. Balances traction
with a seamless steering feel to provide improved
handling and acceleration.
SNOW — Tuning set for additional stability in inclement
weather. Use when driving on loose traction surfaces
such as snow, while either on or off-road. When in
SNOW mode (depending on certain operating condi -tions), the transmission may use SECOND gear (rather
than FIRST gear) during launches, to minimize wheel
slippage.
SPORT — This mode alters the transmission's auto -
matic 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 trac -
tion surfaces such as mud, sand, or wet grass. The
4WD system provides maximum capability to all
wheels. Some binding may be felt on high traction
surfaces. The electronic brake system will be adjusted
to reduce the automatic braking of slipping wheels and
to allow the engine to operate without restriction.
ROCK — Off-road calibration is only available in 4WD
LOW range. ROCK mode provides the most aggressive
four-wheel drive performance for extreme off-road
terrain. Use for low speed obstacles such as large
rocks, deep ruts, etc. The driver may notice additional
tire scrubbing and steering wheel feedback while
driving in ROCK mode on higher traction off-road
surfaces. For use only in off-road driving situations.
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
Úpage 143.
Instrument Cluster Display Messages
When the appropriate conditions exist, a message will
appear in the instrument cluster Úpage 63.
POWER STEERING
The power steering system will provide increased vehicle
response and ease of maneuverability. The power steering
system adapts to different driving conditions.
If the “SERVICE POWER STEERING” or “POWER
STEERING ASSIST OFF - SERVICE SYSTEM”
message and a steering wheel icon are
displayed on the instrument cluster display
screen, it indicates that the vehicle needs to be taken to
an authorized dealer for service. It is likely the vehicle has
lost power steering assistance
Úpage 68.
If the “POWER STEERING SYSTEM HOT - PERFORMANCE
MAY BE LIMITED” message and an icon are displayed on
the instrument cluster display screen, it indicates that
extreme steering maneuvers may have occurred, which
caused an over temperature condition in the power
steering system. You will lose power steering assistance
momentarily until the over temperature condition no
longer exists. Once driving conditions are safe, pull over
and let the vehicle idle for a few moments until the light
turns off
Úpage 68.
WARNING!
Continued operation with reduced assist could pose a
safety risk to yourself and others. Service should be
obtained as soon as possible.
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STARTING AND OPERATING89
NOTE:
Even if the power steering assistance is no longer oper -
ational, it is still possible to steer the vehicle. Under
these conditions there will be a substantial increase in
steering effort, especially at low speeds and during
parking maneuvers.
If the condition persists, see an authorized dealer for
service.
STOP/START SYSTEM
The Stop/Start system was designed to reduce fuel
consumption. The system will stop the engine
automatically during a vehicle stop if the required
conditions are met. Releasing the brake pedal or pressing
the accelerator pedal will automatically restart the engine.
This vehicle has been upgraded with a heavy-duty battery,
starter, as well as other engine parts, to handle the
additional engine starts.
AUTOSTOP MODE
The Stop/Start feature is enabled after every normal
customer engine start. At that time, the system will go into
STOP/START READY.
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
Úpage 63.
The vehicle must be completely stopped.
The gear selector must be in a forward gear and the
brake pedal pressed. The engine will shut down, the tachometer will move to the
zero position, and the Stop/Start indicator light will
illuminate indicating you are in Autostop. Customer
settings will be maintained upon return to an
engine-running condition.
POSSIBLE REASONS THE ENGINE DOES
N
OT 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 accept -
able cabin temperature has not been achieved
HVAC is set to full defrost mode at a high blower speed
HVAC is set to MAX A/C
Engine has not reached normal operating temperature
The transmission is not in a forward or reverse gear
Hood is open
Brake pedal is not pressed with sufficient pressure with
vehicle in DRIVE (D) position
Accelerator pedal input
Engine temperature is too high
5 mph (8 km/h) threshold has not been achieved from
previous Autostop
Steering angle is beyond threshold
It may be possible for the vehicle to be driven several
times without the Stop/Start system going into a STOP/
START READY state under more extreme conditions of the
items listed previously.TO START THE ENGINE WHILE IN
A
UTOSTOP MODE
While in a forward gear, the engine will start when the
brake pedal is released or the accelerator pedal is
pressed. The transmission will automatically re-engage
upon engine restart.
Conditions That Will Cause The Engine To Start
Automatically While In Autostop Mode:
The transmission gear selector is moved out of DRIVE,
except in the PARK position
To maintain cabin temperature comfort
HVAC is set to full defrost mode
HVAC system temperature or fan speed is manually
adjusted
Battery voltage drops too low
Stop/Start OFF switch is pushed
A Stop/Start system error occurs
Steering wheel is turned beyond threshold
4
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116STARTING AND OPERATING
TRAILER HITCH CLASSIFICATION
The following chart provides the industry standard for the maximum trailer weight a given trailer hitch class can tow, and should be used to assist you in selecting the correct trailer
hitch for your intended towing condition.
TRAILER TOWING WEIGHTS (MAXIMUM TRAILER WEIGHT RATINGS)
Trailer Hitch Classification Definitions
Class Max. Trailer Hitch Industry Standards
Class I - Light Duty 2,000 lb (907 kg)
Class II - Medium Duty 3,500 lb (1,587 kg)
Class III - Heavy Duty 6,000 lb (2,722 kg)
Class IV - Extra Heavy Duty 10,000 lb (4,535 kg)
Refer to the “Trailer Towing Weights (Maximum Trailer Weight Ratings)” chart for the Maximum Gross Trailer Weight (GTW) towable for your given drivetrain.
All trailer hitches should be professionally installed on your vehicle.
Engine/Transmission ModelFrontal Area Maximum GTWMaximum TW (See Note)
2.0L Automatic FWD or 4WD32 sq ft (2.97 sq m) 2,000 lb (907 kg) 200 lb (90 kg)
2.0L Automatic With Trailer Tow Package 4WD
32 sq ft (2.97 sq m) 4,000 lb (1,814 kg) 400 lb (181 kg)
2.4L Automatic With Or Without Trailer Tow Package FWD or 4WD
32 sq ft (2.97 sq m) 2,000 lb (907 kg) 200 lb (90 kg)
Refer to local laws for maximum trailer towing speeds.
NOTE:The trailer tongue weight must be considered as part of the combined weight of occupants and cargo, and should never exceed the weight referenced on the Tire And Loading Infor -
mation Placard.
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STARTING AND OPERATING119
Four-Pin Connector
Seven-Pin Connector
TOWING TIPS
Before towing, practice turning, stopping, and backing up
the trailer in an area located away from heavy traffic.
Automatic Transmission
The DRIVE (D) range can be selected when towing. The
transmission controls include a drive strategy to avoid
frequent shifting when towing. However, if frequent
shifting does occur while in DRIVE, use the AutoStick shift
control to select a lower gear.
NOTE:Using a lower gear while operating the vehicle under heavy
loading conditions will improve performance and extend
transmission life by reducing excessive shifting and heat
build up. This action will also provide better engine
braking.
AutoStick — If Equipped
When using the AutoStick shift control, select the
highest gear that allows for adequate performance and
avoids frequent downshifts. For example, choose “5” if
the desired speed can be maintained. Choose “4” or
“3” if needed to maintain the desired speed.
To prevent excess heat generation, avoid continuous
driving at high RPM. Reduce vehicle speed as neces -
sary to avoid extended driving at high RPM. Return to a
higher gear or vehicle speed when grade and road
conditions allow.
Cruise Control — If Equipped
Do not use on hilly terrain or with heavy loads.
When using the Cruise Control, if you experience speed
drops greater than 10 mph (16 km/h), disengage until
you can get back to cruising speed.
Use Cruise Control in flat terrain and with light loads to
maximize fuel efficiency.
1 — Ground
2 — Park
3 — Left Stop/Turn
4 — Right Stop/Turn
1 — Backup Lamps
2 — Running Lamps
3 — Left Stop/Turn
4 — Ground
5 — Battery
6 — Right Stop/Turn
7 — Electric Brakes
4
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SAFETY147
Enabling HDC
HDC is enabled by pushing the HDC button, but the
following conditions must also be met to enable HDC:
The driveline is in 4WD Low
The vehicle speed is below 5 mph (8 km/h)
The parking brake is released
The driver door is closed
Activating HDC
Once HDC is enabled it will activate automatically if driven
down a grade of sufficient magnitude. The set speed for
HDC is selectable by the driver, and can be adjusted by
using the gear shift +/-. The following summarizes the
HDC set speeds:
HDC Target Set Speeds
P = No set speed. HDC may be enabled but will not acti -
vate.
R = 0.6 mph (1 km/h)
N = 1.2 mph (2 km/h)
D = 0.6 mph (1 km/h)
1st = 0.6 mph (1 km/h)
2nd = 1.2 mph (2 km/h)
3rd = 1.8 mph (3 km/h)
4th = 2.5 mph (4 km/h)
5th = 3.1 mph (5 km/h)
6th = 3.7 mph (6 km/h)
7th = 4.3 mph (7 km/h)
8th = 5.0 mph (8 km/h)
9th = 5.6 mph (9 km/h) – If EquippedNOTE:During HDC the +/- shifter input is used for HDC target
speed selection, but will not affect the gear chosen by the
transmission. When actively controlling HDC the trans -
mission will shift appropriately for the driver-selected set
speed and corresponding driving conditions.
Driver Override
The driver may override HDC activation with throttle or
brake application at any time.
Deactivating HDC
HDC will be deactivated but remain available if any of the
following conditions occur:
Driver overrides HDC set speed with throttle or brake
application.
Vehicle speed exceeds 20 mph (32 km/h) but remains
below 40 mph (64 km/h).
Vehicle is on a downhill grade of insufficient magni-
tude, is on level ground, or is on an uphill grade.
Vehicle is shifted to PARK.
Disabling HDC
HDC will be deactivated and disabled if any of the
following conditions occur:
The driver pushes the HDC button.
The driveline is shifted out of 4WD Low.
The parking brake is applied.
The driver door opens.
The vehicle is driven greater than 20 mph (32 km/h)
for greater than 70 seconds.
The vehicle is driven greater than 40 mph (64 km/h)
(HDC exits immediately).
HDC detects excessive brake temperature.
Feedback To The Driver
The instrument cluster has an HDC icon and the HDC
button has an LED icon, which offers feedback to the
driver about the state HDC is in.
The cluster icon and button light will illuminate and
remain on solid when HDC is enabled or activated. This
is the normal operating condition for HDC.
The cluster icon and button light will flash for several
seconds then extinguish when the driver pushes the
HDC button but enable conditions are not met.
The cluster icon and button light will flash for several
seconds then extinguish when HDC disables due to
excess speed.
The cluster icon and button light will flash when HDC
deactivates due to overheated brakes. The flashing will
stop and HDC will activate again once the brakes have
cooled sufficiently.
WARNING!
HDC is only intended to assist the driver in controlling
vehicle speed when descending hills. The driver must
remain attentive to the driving conditions and is
responsible for maintaining a safe vehicle speed.
6
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SAFETY149
Ready Alert Braking (RAB)
RAB may reduce the time required to reach full braking
during emergency braking situations. It anticipates when
an emergency braking situation may occur by monitoring
how fast the throttle is released by the driver. The
Electronic Brake Controller (EBC) will prepare the brake
system for a panic stop.
Selec-Speed Control (SSC) — If Equipped
SSC is intended for off-road driving in 4WD Low only. SSC
maintains vehicle speed by actively controlling engine
torque and brakes.
SSC has three states:
1. Off (feature is not enabled and will not activate).
2. Enabled (feature is enabled and ready but activation
conditions are not met, or driver is actively overriding
with brake or throttle application).
3. Active (feature is enabled and actively controlling vehicle speed).
Enabling SSC
SSC is enabled by pushing the SSC button, but the
following conditions must also be met to enable SSC:
The driveline is in 4WD Low
The vehicle speed is below 5 mph (8 km/h)
The parking brake is released
The driver door is closed
The driver is not applying throttle Activating SSC
Once SSC is enabled it will activate automatically once the
following conditions are met:
Driver releases throttle
Driver releases brake
Transmission is in any selection other than PARK (P)
Vehicle speed is below 20 mph (32 km/h)
The set speed for SSC is selectable by the driver, and can
be adjusted by using the gear shift +/-. Additionally, the
SSC set speed may be reduced when climbing a grade and
the level of set speed reduction depends on the
magnitude of grade. The following summarizes the SSC
set speeds:
SSC Target Set Speeds
1st = .6 mph (1 km/h)
2nd = 1.2 mph (2 km/h)
3rd = 1.8 mph (3 km/h)
4th = 2.5 mph (4 km/h)
5th = 3.1 mph (5 km/h)
6th = 3.7 mph (6 km/h)
7th = 4.3 mph (7 km/h)
8th = 5 mph (8 km/h)
9th = 5.6 mph (9 km/h) – If Equipped
REVERSE = .6 mph (1 km/h)
NEUTRAL = 1.2 mph (2 km/h)
PARK = SSC remains enabled but not active
NOTE:
During SSC the +/- shifter input is used for SSC target
speed selection but will not affect the gear chosen by
the transmission. While actively controlling SSC the
transmission will shift appropriately for the
driver-selected set speed and corresponding driving
conditions.
SSC performance is influenced by the Selec-Terrain
mode. This difference may be notable to the driver and
may be perceived as a varying level of aggressiveness.
Driver Override:
The driver may override SSC activation with throttle or
brake application at any time.
Deactivating SSC
SSC will be deactivated but remain available if any of the
following conditions occur:
Driver overrides SSC set speed with throttle or brake
application.
Vehicle speed exceeds 20 mph (32 km/h) but remains
below 40 mph (64 km/h).
Vehicle is shifted to PARK.
6
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158SAFETY
Should this occur, you should stop as soon as possible and
inflate the tires with low pressure (those in a different color
in the instrument cluster graphic) to the vehicle’s
recommended cold placard pressure value as shown in the
"Inflate to XX" message. Once the system receives the
updated tire pressures, the system will automatically
update, the pressure values in the graphic display in the
instrument cluster will return to their original color, and the
TPMS Warning Light will turn off. The vehicle may need to
be driven for up to 20 minutes above 15 mph (24 km/h) in
order for the TPMS to receive this information.
NOTE:When filling warm tires, the tire pressure may need to be
increased up to an additional 4 psi (28 kPa) above the
recommended cold placard pressure in order to turn the
TPMS Warning Light off.
TIRE FILL ALERT
Tire Fill Alert notifies the user when the placard tire
pressure is attained while inflating or deflating the tire.
The customer may choose to disable or enable the Tire Fill
Alert feature through use of the customer settings in the
radio.
NOTE:
Only one tire can be filled at a time when using the Tire
Fill Alert system.
The Tire Fill Alert feature cannot be entered if an
existing TPMS fault is set to “active” or if the system is
in deactivation mode (if equipped). The system will be activated when the system detects an
increase of tire pressure while inflating the tire. The
ignition must be in the RUN mode, with the transmission
in PARK (P).
NOTE:It is not required to have the engine running to enter Tire
Fill Alert mode.
The hazard lamps will come on to confirm the vehicle is in
Tire Fill Alert mode.
When Tire Fill Alert mode is entered, the tire pressure
display screen will be displayed in the instrument cluster.
Operation:
The horn will chirp once to let the user know when to
stop filling the tire, when it reaches recommended
pressure.
The horn will chirp three times if the tire is over filled
and will continue to chirp every five seconds if the user
continues to inflate the tire.
The horn will chirp once again when enough air is let
out to reach proper inflation level.
The horn will also chirp three times if the tire is then
under-inflated and will continue to chirp every five
seconds if the user continues to deflate the tire.
If the hazard lamps do not come on while inflating the
tire, the TPMS sensor may be in an inoperative posi -
tion, preventing the TPMS sensor signal from being
received. In this case, the vehicle may need to be
moved slightly forward or backward.
TPMS DEACTIVATION — IF EQUIPPED
The TPMS can be deactivated if replacing all four wheel
and tire assemblies (road tires) with wheel and tire
assemblies that do not have TPMS sensors, such as when
installing winter wheel and tire assemblies on your
vehicle.
To deactivate the TPMS, first replace all four wheel and
tire assemblies (road tires) with tires not equipped with
TPMS sensors. Then, drive the vehicle for 20 minutes
above 15 mph (24 km/h). The TPMS will chime, the TPMS
Warning Light will flash on and off for 75 seconds and then
remain on. The instrument cluster will display the
“SERVICE TPM SYSTEM” message and then display
dashes (--) in place of the pressure values.
Beginning with the next ignition cycle, the TPMS will no
longer chime or display the “SERVICE TPM SYSTEM”
message in the instrument cluster but dashes (--) will
remain in place of the pressure values.
To reactivate the TPMS, replace all four wheel and tire
assemblies (road tires) with tires equipped with TPMS
sensors. Then, drive the vehicle for up to 20 minutes
above 15 mph (24 km/h). The TPMS will chime, the TPMS
Warning Light will flash on and off for 75 seconds and then
turn off. The instrument cluster will display the “SERVICE
TPM SYSTEM” message and then display pressure values
in place of the dashes. On the next ignition cycle the
"SERVICE TPM SYSTEM" message will no longer be
displayed as long as no system fault exists.
23_KL_OM_EN_USC_t.book Page 158