2020 JEEP CHEROKEE heating

157
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
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.
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.
Engine has not reached normal operating
temperature.
Battery charge is low.
The transmission is not in DRIVE (auto-
matic transmission) or NEUTRAL (manual
transmission).
Hood is open.
Vehicle is in 4WD LOW transfer case
mode.
Exhaust system regeneration in process.
Other Factors Which Can Inhibit Autostop
Include:
Fuel level.
Accelerator pedal input (automatic trans-
mission only).
Engine temperature too high.
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 above.
To Start The Engine While In Autostop
Mode
Automatic Transmission:

While in DRIVE, the engine will start when the
brake pedal is released or the throttle pedal is
depressed. The transmission will automatically
re-engage upon engine restart. During this tran -
sition, the brakes will hold the vehicle to avoid
undesired vehicle movement.
Manual Transmission:

When the gear selector is in NEUTRAL, the
engine will start when the clutch pedal is
pressed. The vehicle will go into STOP/START
SYSTEM NOT READY mode until the vehicle
speed is greater than 4 mph (7 km/h).

Conditions That Will Cause The Engine To Start
Automatically While In Autostop Mode:

The transmission gear selector is moved
from DRIVE to REVERSE or NEUTRAL.
To maintain cabin temperature comfort.
HVAC is set to full defrost mode.
Battery voltage drops too low.
Low brake vacuum (e.g. after several brake
pedal applications).
Stop/Start OFF switch is pushed.
4WD system is put into 4WD LOW mode.
The emissions system requires it.
A Stop/Start system error occurs.
HVAC system temperature or fan speed is
manually adjusted.
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175
Adblue® (UREA) — If Equipped
The vehicle is equipped with an UREA injec-
tion system and Selective Catalytic Reduc -
tion to meet emission standards. These two
systems ensure compliance with the diesel
emissions requirements; at the same time,
they ensure fuel-efficiency, handling, torque
and power. For messages and system warn -
ings, refer to the “Warning Lights And
Messages” in the “Getting To Know Your
Instrument Panel” section. AdBlue® (UREA)
is a very stable product with a long shelf life.
Stored at temperatures LOWER than 90 °F
(32 °C), it has a shelf life of at least one year.
For more information on the AdBlue® liquid
type, see the “Fluids and lubricants” in the
“Technical specifications” section. The
vehicle is equipped with an automatic
AdBlue® heating system when the engine
starts allowing the system to work correctly
at temperatures lower than 12 °F (-11 °C).
NOTE:
AdBlue® freezes at temperatures lower than
12 °F (-11 °C).
AdBlue® (UREA) Storage
AdBlue® (UREA) is considered a very stable
product with a long shelf life. If AdBlue®
(UREA) is kept in temperatures between 10°
and 90°F (-12° and 32°C), it will last a
minimum of one year.
AdBlue® (UREA) is subject to freezing at the
lowest temperatures. For example, AdBlue®
(UREA) may freeze at temperatures at or
below 12° F (-11° C). The system has been
designed to operate in this environment.
NOTE:
When working with AdBlue® (UREA), it is
important to know that:
Any containers or parts that come into
contact with AdBlue® (UREA) must be
AdBlue® (UREA) compatible (plastic or
stainless steel). Copper, brass, aluminum,
iron or non-stainless steel should be
avoided as they are subject to corrosion by
AdBlue® (UREA).
If AdBlue® (UREA) is spilled, it should be
wiped up completely.
Adding AdBlue® (UREA)
Preliminary Conditions
AdBlue® (UREA) freezes at temperatures
lower than 12° F (-11° C). If the car stands
for a long time at this temperature refilling
could be difficult. For this reason, it is
advised to park the vehicle in a garage and/
or heated environment and wait for the
UREA to return to liquid state before topping
up.
Proceed as follows:
Park the car on flat ground and stop the
engine by placing the ignition in the OFF
position.
Open the fuel door, undo and remove the
cap (blue) from the AdBlue® (UREA)
filler.
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207
Gauge will decrease quickly from approx-
imately 70 psi (4.8 Bar) to the actual tire
pressure when the Sealant Bottle is
empty.
2. The pump will start to inject air into the tire immediately after the Sealant Bottle
is empty. Continue to operate the pump
and inflate the tire to the pressure indi -
cated on the tire pressure label on the
driver-side latch pillar (recommended
pressure). Check the tire pressure by
looking at the Pressure Gauge.

If the tire does not inflate to at least 26 psi (1.8 Bar)
pressure within 15 minutes:

NOTE:
Never operate the compressor for longer than
20 minutes. Risk of Overheating.
The tire is too badly damaged. Do not
attempt to drive the vehicle further. Call
for assistance.
NOTE:
If the tire becomes overinflated, push the
Deflation Button to reduce the tire pressure
to the recommended inflation pressure
before continuing. If the tire inflates to the recommended pressure
or is at least 26 psi (1.8 Bar) pressure within
15 minutes:
1. Push the Power Button to turn off the
Tire Service Kit.
2. Remove the Speed Limit sticker from the top of the Sealant Bottle and place the
sticker on the instrument panel. 3. Immediately disconnect the Sealant
Hose from the valve stem, reinstall the
cap on the fitting at the end of the hose,
and place the Tire Service Kit in the
vehicle storage location. Quickly proceed
to (D) “Drive Vehicle.”
CAUTION!
The metal end fitting from Power Plug
may get hot after use, so it should be
handled carefully.
Failure to reinstall the cap on the fitting
at the end of the Sealant Hose can result
in sealant contacting your skin, clothing,
and the vehicle’s interior. It can also
result in sealant contacting internal Tire
Service Kit components which may
cause permanent damage to the kit.
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IN CASE OF EMERGENCY
212

REFUELING IN EMERGENCY —
IF EQUIPPED

The fuel filling procedure in case of emer-
gency is described in the “Emergency Gas
Can Refueling”. Refer to “Refueling The
Vehicle” in “Starting And Operating” for
further information.
The vehicle is equipped with a refueling
funnel. If refueling is necessary, while using
an approved gas can, please insert the refu -
eling funnel into the filler neck opening.
Refueling Funnel Inserting Funnel
IF YOUR ENGINE
OVERHEATS
In any of the following situations, you can
reduce the potential for overheating your
engine by taking the appropriate action.
On the highways — slow down.
In city traffic — while stopped, place the
transmission in NEUTRAL, but do not
increase engine idle speed.
NOTE:
There are steps that you can take to slow
down an impending overheat condition:
If your Air Conditioner (A/C) is on, turn it
off. The A/C system adds heat to the
engine cooling system and turning the A/C
off can help remove this heat.
CAUTION!
Driving with a hot cooling system could
damage your vehicle. If the temperature
gauge reads “H,” pull over and stop the
vehicle. Idle the vehicle with the air
conditioner turned off until the pointer
drops back into the normal range. If the
pointer remains on the “H” and you hear
continuous chimes, turn the engine off
immediately and call for service.
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IN CASE OF EMERGENCY
214
FREEING A STUCK VEHICLE
If your vehicle becomes stuck in mud, sand
or snow, it can often be moved using a
rocking motion. Turn the steering wheel right
and left to clear the area around the front
wheels. For vehicles with automatic trans-
mission, push and hold the lock button on
the gear selector. Then shift back and forth
between DRIVE and REVERSE (with auto -
matic transmission) or SECOND GEAR and
REVERSE (with manual transmission), while
gently pressing the accelerator.
NOTE:
For vehicles with automatic transmission:
Shifts between DRIVE and REVERSE can
only be achieved at wheel speeds of 5 mph
(8 km/h) or less. Whenever the transmission
remains in NEUTRAL for more than two
seconds, you must press the brake pedal to
engage DRIVE or REVERSE.
Use the least amount of accelerator pedal
pressure that will maintain the rocking
motion without spinning the wheels or racing
the engine. NOTE:
Push the “ESC OFF” switch (if necessary), to
place the Electronic Stability Control (ESC)
system in “Partial Off” mode, before rocking
the vehicle. Refer to “Electronic Brake
Control System” in “Safety” for further infor
-
mation. Once the vehicle has been freed,
push the "ESC OFF" switch again to restore
“ESC On” mode.
CAUTION!
Racing the engine or spinning the wheels
may lead to transmission overheating
and failure. Allow the engine to idle with
the transmission in NEUTRAL for at
least one minute after every five
rocking-motion cycles. This will mini -
mize overheating and reduce the risk of
clutch or transmission failure during
prolonged efforts to free a stuck vehicle.
When “rocking” a stuck vehicle by
shifting between DRIVE/SECOND GEAR
and REVERSE, do not spin the wheels
faster than 15 mph (24 km/h), or drive -
train damage may result.
Revving the engine or spinning the
wheels too fast may lead to transmission
overheating and failure. It can also
damage the tires. Do not spin the wheels
above 30 mph (48 km/h) while in gear
(no transmission shifting occurring).
WARNING!
Fast spinning tires can be dangerous.
Forces generated by excessive wheel
speeds may cause damage, or even failure,
of the axle and tires. A tire could explode
and injure someone. Do not spin your
vehicle's wheels faster than 30 mph
(48 km/h) or for longer than 30 seconds
continuously without stopping when you
are stuck and do not let anyone near a
spinning wheel, no matter what the speed.
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241(Continued)
RAISING THE VEHICLE
In the case where it is necessary to raise the
vehicle, go to an authorized dealer or service
station.
TIRES
Tires — General Information
Tire Pressure
Proper tire inflation pressure is essential to
the safe and satisfactory operation of your
vehicle. Four primary areas are affected by
improper tire pressure:
Safety
Fuel Economy
Tread Wear
Ride Comfort and Vehicle Stability
Safety Both underinflation and overinflation affect
the stability of the vehicle and can produce
a feeling of sluggish response or over respon
-
siveness in the steering. NOTE:
Unequal tire pressures from side to side
may cause erratic and unpredictable
steering response.
Unequal tire pressure from side to side
may cause the vehicle to drift left or right.
Fuel Economy
Underinflated tires will increase tire rolling
resistance resulting in higher fuel consump -
tion.
Tread Wear
Improper cold tire inflation pressures can
cause abnormal wear patterns and reduced
tread life, resulting in the need for earlier tire
replacement.
Ride Comfort And Vehicle Stability
Proper tire inflation contributes to a comfort -
able ride. Over-inflation produces a jarring
and uncomfortable ride.
WARNING!
Improperly inflated tires are dangerous
and can cause collisions.
Underinflation increases tire flexing and
can result in overheating and tire failure.
Overinflation reduces a tire's ability to
cushion shock. Objects on the road and
chuckholes can cause damage that
result in tire failure.
Overinflated or underinflated tires can
affect vehicle handling and can fail
suddenly, resulting in loss of vehicle
control.
Unequal tire pressures can cause
steering problems. You could lose
control of your vehicle.
Unequal tire pressures from one side of
the vehicle to the other can cause the
vehicle to drift to the right or left.
Always drive with each tire inflated to the
recommended cold tire inflation pres-
sure.
WARNING! (Continued)
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324
INDEX
Oil ........................................ 261, 262
Oil Filler Cap .......... 229 , 230 , 231 , 232
Oil Selection .................................. 261
Overheating ................................... 212
Enhanced Accident Response
Feature ..................................... 115 , 217
Exterior Lights ............................. 30 , 137
F
Filters Air Conditioning ............................... 47
Engine Oil ..................................... 262
Flashers Hazard Warning ............................. 182Turn Signals ............................ 73 , 137
Flash-To-Pass ...................................... 31
Flat Tire Changing ..................... 241 , 246
Flat Tire Stowage ....................... 241 , 246
Fluid Capacities................................. 261
Fluid Leaks ....................................... 137
Fluid Level Checks Brake ............................................ 235
Engine Oil ..................................... 233
Fluid, Brake ...................................... 265
Fluids And Lubricants ........................ 262
Fob, Key ............................................. 13
Fog Lights ..................................... 32 , 71
Fog Lights, Rear .................................. 32 Fold-Flat Seats .................................... 22
Forward Collision Warning .................... 90
Four Wheel Drive ............................... 150
Freeing A Stuck Vehicle ..................... 214
Fuel
Additives ....................................... 257
Consumption ................................. 266
Light............................................... 68
Materials Added............................. 257
Octane Rating................................ 262
Requirements ................................ 261
Specifications................................ 262
Tank Capacity................................ 261
Fueling ......................................172 , 173
Fuses ............................................... 184
G
Gasoline Particulate Filter (GPF) ........... 58
Gear Ranges ..............................144 , 148
Gear Selector Override ....................... 213
Glass Cleaning .................................. 254
GVWR .............................................. 178
H
Hazard Warning Flashers .................... 182
Head Restraint Removal ....................... 26
Head Restraints .................................. 26
Head Rests ......................................... 26 Headlights ...........................................30
Automatic ........................................31
Automatic High Beam .......................31
High Beam................................. 30 , 31

High Beam/Low Beam Select Switch ..... 31

On With Wipers ................................31
Passing...................................... 30 , 31
Switch .............................................30 Time Delay.......................................32
Heated Seats ................................. 24 , 25
Heated Steering Wheel .........................28
Hill Descent Control .............................83
Hill Descent Control Indicator ...............83
Hill Start Assist....................................81
Hood Prop ...........................................52
Hood Release ......................................52
I
Ignition ...............................................15 Switch .............................................15
Instrument Cluster ...............................60 Descriptions .....................................73
Display ............................................59Menu Items .....................................61
Instrument Panel Lens Cleaning ..........254
Interior Appearance Care ....................253
Introduction ..........................................1
Inverter Power ..............................................56
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326
INDEX
N
Navigation ........................................ 287
New Vehicle Break-In Period ............... 140
O
Occupant Restraints............................. 98
Octane Rating, Gasoline (Fuel) ............ 262
Oil Pressure Light ................................ 66
Oil, Engine ........................................ 262 Capacity ........................................ 261
Checking ....................................... 233
Dipstick ........................................ 233
Filter............................................. 262
Pressure Warning Light ..................... 66
Recommendation ........................... 261Viscosity ........................................ 261
Onboard Diagnostic System .................. 74
Operating Precautions .......................... 74
Operator Manual Owner's Manual ................................. 2
Overheating, Engine ........................... 212
P
Paddle Shifters .................................. 148
Parking Brake .................................... 141
ParkSense Active Park Assist .............. 168
ParkSense System, Rear ............. 164 , 166
Passive Entry....................................... 19
Personalized Main Menu .................... 273
Pets ................................................. 134 Phone (Uconnect).............................. 290
Pairing .......................................... 292
Phonebook ........................................ 296
Pinch Protection.................................. 51
Power Brakes .......................................... 255
Inverter ........................................... 56
Outlet (Auxiliary Electrical Outlet) ..... 55
Windows ......................................... 47
Pregnant Women And Seat Belts......... 106
Preparation For Jacking...................... 194
Pretensioners Seat Belts ..................................... 106
R
Radial Ply Tires ................................. 243
Radio ............................................... 277 Presets .......................... 270 , 274 , 279
Radio Operation .........................269 , 272
Radio Screens ............................272 , 277
Rain Sensitive Wiper System ................ 35
Rear Camera ..................................... 171
Rear Cross Path................................... 89
Rear ParkSense System ..............164 , 166
Rear Wiper/Washer .............................. 36
Recreational Towing .......................... 180
Release, Hood ..................................... 52
Reminder, Lights On ............................ 32
Reminder, Seat Belt ............................ 99 Remote Control
Starting System ................................17
Remote Keyless Entry ...........................14 Arm The Alarm .................................18
Disarm The Alarm .............................18
Remote Starting System .......................17
Replacement Keys ...............................14
Replacement Tires .............................245
Restraints, Child ................................118
Restraints, Head ..................................26
Roll Over Warning ..................................2
Roof Type Carrier .................................57
Rotation, Tires ...................................250
S
Safety Checks Inside Vehicle ...............135
Safety Checks Outside Vehicle.............137
Safety Tips ........................................134
Schedule, Maintenance ......................218
Seat Belt Reminder ..............................64
Seat Belts ................................... 99 , 135
Adjustable Shoulder Belt .................103
Adjustable Upper Shoulder Anchorage ..................................103
Adjustable Upper Shoulder Belt Anchorage ..................................103

Automatic Locking Retractor (ALR) ... 106

Child Restraints..............................118
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