coolant temperature JEEP CHEROKEE 2021 Owner handbook (in English)

GETTING TO KNOW YOUR VEHICLE
46
The temperature can be displayed in U.S.
or Metric units by selecting the US/Metric
customer-programmable feature. Refer to
the “Uconnect Settings” in “Multimedia”
in your Owner’s Manual for further infor-
mation.
To provide you with maximum comfort in the
Automatic mode during cold start-ups, the
blower fan will remain on low until the
engine warms up. The blower will increase in
speed and transition into Auto mode.
Manual Operation Override
This system offers a full complement of
manual override features. The AUTO symbol
in the front ATC display will be turned off
when the system is being used in the manual
mode.
Operating Tips
NOTE:
For suggested control settings for various
weather conditions, refer to “Climate
Controls” in “Getting To Know Your Vehicle”
in the Owner’s Manual.
Summer Operation
The engine cooling system must be
protected with a high-quality antifreeze
coolant to provide proper corrosion protec -
tion and to protect against engine over -
heating. OAT coolant (conforming to
MS.90032) is recommended.
Winter Operation
To ensure the best possible heater and
defroster performance, make sure the engine
cooling system is functioning properly and
the proper amount, type, and concentration
of coolant is used. Use of the Air Recircula -
tion mode during Winter months is not
recommended, because it may cause window
fogging.
Vacation/Storage
Before you store your vehicle, or keep it out
of service (i.e., vacation) for two weeks or
more, run the air conditioning system at idle
for about five minutes, in fresh air with the
blower setting on high. This will ensure
adequate system lubrication to minimize the
possibility of compressor damage when the
system is started again.
Window Fogging
Vehicle windows tend to fog on the inside in
mild, rainy, and/or humid weather. To clear
the windows, select Defrost or Mix mode and
increase the front blower speed. Do not use
the Recirculation mode without A/C for long
periods, as fogging may occur.
CAUTION!
Failure to follow these cautions can cause
damage to the heating elements:
Use care when washing the inside of the
rear window. Do not use abrasive window
cleaners on the interior surface of the
window. Use a soft cloth and a mild
washing solution, wiping parallel to the
heating elements. Labels can be peeled
off after soaking with warm water.
Do not use scrapers, sharp instruments,
or abrasive window cleaners on the inte-
rior surface of the window.
Keep all objects a safe distance from the
window.
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GETTING TO KNOW YOUR INSTRUMENT PANEL
66
If the light continues to flash when the
vehicle is running, immediate service is
required. You may experience reduced
performance, an elevated/rough idle, or
engine stall and your vehicle may require
towing. The light will come on when the igni-
tion is placed in the ON/RUN or ACC/ON/
RUN position and remain on briefly as a bulb
check. If the light does not come on during
starting, have the system checked by an
authorized dealer.
— Engine Coolant Temperature Warning
Light
This light warns of an overheated engine
condition. If the engine coolant temperature
is too high, this indicator will illuminate and
a single chime will sound.
If the light turns on while driving, safely pull
over and stop the vehicle. If the A/C system
is on, turn it off. Also, shift the transmission
into NEUTRAL and idle the vehicle. If the
temperature reading does not return to
normal, turn the engine off immediately and
call for service. Refer to “If Your Engine
Overheats” in “In Case Of Emergency” for
further information.
— Hood Open Warning Light
This warning light will illuminate when the
hood is left open and not fully closed.
NOTE:
If the vehicle is moving, there will also be a
single chime.
— Liftgate Open Warning Light
This warning light will illuminate when the
liftgate is open.
NOTE:
If the vehicle is moving, there will also be a
single chime.
— Oil Pressure Warning Light
This warning light will illuminate to indicate
low engine oil pressure. A chime will sound
when this light turns on and a message “Oil
Pressure Low” will display in the message
screen. If the light turns on while driving,
pull the vehicle to the side of the road at a
safe location, stop the vehicle, shut off the
engine as soon as possible, check the oil
level and correct the oil level if it is low.
Contact an authorized dealer. Do not operate the vehicle until the cause is
corrected. This light may or may not indicate
how much oil is in the engine. The engine oil
level must be checked according to section
“Scheduling Service” Checking Oil Level. If
the oil level is low and corrected, the engine
can be restarted. Otherwise the vehicle
should be serviced by an authorized dealer.
NOTE:
The light may flash, a message in the center
of the dash may be displayed momentarily
“low oil pressure” and a chime may occur
during sharp cornering maneuvers. If this
happen it may indicate a low oil level. The oil
level should be checked and serviced by a
dealer if this occurs.
— Oil Temperature Warning Light

This warning light will illuminate to indicate
the engine oil temperature is high. If the light
turns on while driving, stop the vehicle and
shut off the engine as soon as possible. Wait for
oil temperature to return to normal levels.

CAUTION!
If the vehicle is driven with low oil levels
severe engine damage can occur. Have the
vehicle checked immediately.
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213
You can also turn the temperature control
to maximum heat, the mode control to
floor and the blower control to high. This
allows the heater core to act as a supple-
ment to the radiator and aids in removing
heat from the engine cooling system.GEAR SELECTOR OVERRIDE
If a malfunction occurs and the gear selector
cannot be moved out of the PARK position,
you can use the following procedure to
temporarily move the gear selector:
1. Turn the engine OFF.
2. Apply the parking brake.
3. Using a screwdriver or similar tool, care-
fully separate the shifter bezel and boot
assembly from the center console, and
raise it up to access the gear selector
mechanism.
4. Press and maintain firm pressure on the brake pedal. 5. Insert a small screwdriver or similar tool
down into the gear selector override
access hole (at the left front corner of the
gear selector assembly), and push and
hold the override release lever down.
Override Access Hole
6. Move the gear selector to the NEUTRAL position.
7. The vehicle may then be started in NEUTRAL.
8. Reinstall the gear selector boot.
WARNING!
You or others can be badly burned by hot
engine coolant (antifreeze) or steam from
your radiator. If you see or hear steam
coming from under the hood, do not open
the hood until the radiator has had time to
cool. Never try to open a cooling system
pressure cap when the radiator or coolant
bottle is hot.
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SERVICING AND MAINTENAN
CE
224
Heavy Duty Use Of Vehicle
Change the engine oil and engine oil filter at
every 4,500 miles (7,500 km) or 12 months
if using your vehicle under any of the
following severe duty conditions:
Stop and go driving.
Driving in dusty conditions.
Short trips of less than 10 miles (16 km).
Trailer towing.
Taxi, police, or delivery service (commer -
cial service).
Off-road or desert operation.
Scheduled Servicing — Diesel Engine
Your vehicle is equipped with an automatic
oil change indicator system. The oil change
indicator system will remind you that it is
time to take your vehicle in for engine oil
replacement.
Based on engine operation conditions, the oil
change indicator message will illuminate.
This means that service is required for your
vehicle. Operating conditions such as
frequent short-trips, trailer tow, extremely
hot or cold ambient temperatures will influ -
ence when the “Oil Change Required”
message is displayed. Severe Operating
Conditions can cause the change oil
message to illuminate as earlier than speci -
fied. Have your vehicle serviced as soon as
possible, within the next 500 miles
(805 km).
To help you have the best driving experience
possible, the manufacturer has identified the
specific vehicle maintenance service inter -
vals that are required to keep your vehicle
operating properly and safely. The manufacturer recommends that these
maintenance intervals be performed at your
selling dealer. The technicians at your deal
-
ership know your vehicle best, and have
access to factory trained information,
genuine Mopar parts, and specially designed
electronic and mechanical tools that can
help prevent future costly repairs.
NOTE:
The actual interval for changing engine oil
and replacing the engine oil filter depends
on the vehicle usage conditions, and is
signaled by the warning light or message in
the instrument panel. In any case, it must
never exceed 12,500 miles (20,000 km) or
12 months.
Flush and replace the engine coolant at
120 months or 150,000 miles (240,000 km)
whichever comes first.
The timing and accessory belts must be
changed every 37,500 miles (60,000 km) or
3 years for particularly demanding use
(dusty areas, severe weather conditions,
very low or very high temperatures for
extended periods, city driving, long periods
of idling). Under no circumstances should
these intervals be exceeded.
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SERVICING AND MAINTENAN
CE
228
(*) The actual interval for changing engine
oil and replacing the engine oil filter
depends on the vehicle usage conditions,
and is signaled by the warning light or
message in the instrument panel. In any
case, it must never exceed 12,500 miles
(20,000 km) or 12 months.(**) DOT 4 brake fluid interval is time based
only, mileage intervals do not apply.
(***) The timing and accessory belts must be
changed every 37,500 miles (60,000 km) or
3 years for particularly demanding use (dusty
areas, severe weather conditions, very low or
very high temperatures for extended periods, city driving, long periods of idling). Under no
circumstances should these intervals be
exceeded.
(°) Consumption of additive AdBlue (UREA)
depends on the condition of use of the
vehicle and is indicated by LED and/or
message on the instrument panel.
Flush and replace the engine coolant at 10 years or
150,000 miles (240,000 km) whichever comes first.
X X
Inspect timing drive belt. (***) XX X
Replace timing drive belt. (***) XX
Mileage or time passed (whichever comes first)
12,500
25,000
37,500
50,000
62,500
75,000
87,500
100,000
112,500
125,000
137,500
150,000
162,500
175,000
187,500
Or Years: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Or Kilometers:
20,000
40,000
60,000
80,000
100,000
120,000
140,000
160,000
180,000
200,000
220,000
240,000
260,000
280,000
300,000
WARNING!
You can be badly injured working on or
around a motor vehicle. Do only service
work for which you have the knowledge
and the right equipment. If you have any
doubt about your ability to perform a
service job, take your vehicle to a compe-
tent mechanic.
Failure to properly inspect and maintain
your vehicle could result in a component
malfunction and effect vehicle handling
and performance. This could cause an
accident.
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SERVICING AND MAINTENAN
CE
234
Cooling System
Engine Coolant Checks
Check the engine coolant (antifreeze) protec-
tion every 12 months (before the onset of
freezing weather, where applicable). If the
engine coolant (antifreeze) is dirty, the
system should be drained, flushed, and refilled with fresh OAT coolant (conforming
to MS.90032) by an authorized dealer.
Check the front of the A/C condenser for any
accumulation of bugs, leaves, etc. If dirty,
clean by gently spraying water from a garden
hose vertically down the face of the
condenser.
Check the engine cooling system hoses for
brittle rubber, cracking, tears, cuts, and
tightness of the connection at the coolant
recovery bottle and radiator. Inspect the
entire system for leaks. DO NOT REMOVE
THE COOLANT PRESSURE CAP WHEN THE
COOLING SYSTEM IS HOT.
Adding Washer Fluid
The windshield and rear window washers
share the same fluid reservoir. The fluid
reservoir is located in the front of the engine
compartment. Be sure to check the fluid
level in the reservoir at regular intervals. Fill
the reservoir with windshield washer solvent
(not radiator antifreeze) and operate the
system for a few seconds to flush out the
residual water.
When refilling the washer fluid reservoir,
take some washer fluid and apply it to a cloth
or towel and wipe clean the wiper blades,
this will help blade performance.To prevent freeze-up of your windshield
washer system in cold weather, select a solu
-
tion or mixture that meets or exceeds the
temperature range of your climate. This
rating information can be found on most
washer fluid containers.
Brake System
In order to ensure brake system perfor -
mance, all brake system components should
be inspected periodically. Refer to the
“Maintenance Plan” in this section for the
proper maintenance intervals.
WARNING!
You or others can be badly burned by hot
engine coolant (antifreeze) or steam
from your radiator. If you see or hear
steam coming from under the hood, do
not open the hood until the radiator has
had time to cool. Never open a cooling
system pressure cap when the radiator or
coolant bottle is hot.
Keep hands, tools, clothing, and jewelry
away from the radiator cooling fan when
the hood is raised. The fan starts auto-
matically and may start at any time,
whether the engine is running or not.
When working near the radiator cooling
fan, turn the ignition to the OFF mode.
The fan is temperature controlled and
can start at any time the ignition is in the
ON mode.
WARNING!
Commercially available windshield washer
solvents are flammable. They could ignite
and burn you. Care must be exercised
when filling or working around the washer
solution.
CAUTION!
Do not travel with the windshield washer
fluid reservoir empty: the windshield
washer is essential for improving visibility.
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322
INDEX
INDEX
A
About Your Brakes ............................. 255
Accessories ....................................... 266Mopar ........................................... 266
Active Speed Limiter .......................... 159
Adaptive Cruise Control (ACC)
(Cruise Control) ................................. 161
Adding Fuel .............................. 172 , 173
Additives, Fuel .................................. 257
Air Bag Air Bag Operation ........................... 111Air Bag Warning Light ..................... 108
Enhanced Accident Response .. 115 , 217
Event Data Recorder (EDR) ............. 217
Front Air Bag ................................. 109
If Deployment Occurs ..................... 115
Knee Impact Bolsters ..................... 111
Maintaining Your Air Bag System ..... 116
Maintenance .................................. 116
Redundant Air Bag Warning Light .... 109
Transporting Pets ........................... 134
Air Bag Light ........................64 , 108 , 135
Air Conditioning................................... 45
Air Conditioning Filter .......................... 47
Air Conditioning, Operating Tips ............ 46 Air Pressure
Tires ............................................. 242
Alarm Arm The System .............................. 18
Disarm The System .......................... 18
Security Alarm ............................18 , 67
All Wheel Drive (AWD) ....................... 150
Alterations/Modifications Vehicle ............................................. 4
Android Auto...................... 275 , 280 , 306
Apps ............................................. 282
Communication ............................. 282
Maps ............................................ 281
Music ........................................... 282
Antifreeze (Engine Coolant) ................ 261
Anti-Lock Brake System (ABS) .............. 76
Anti-Lock Warning Light ....................... 67
Apple CarPlay .................... 276 , 283 , 307
Apps ............................................. 285
Maps ............................................ 284
Messages ...................................... 284
Music ........................................... 284
Phone ........................................... 284
Assist, Hill Start .................................. 81
Audio Systems (Radio) ................268 , 270 Auto Up Power Windows .......................48
Automatic Headlights ...........................31
Automatic High Beams .........................31
Automatic Tailgate Release ...................54
Automatic Temperature
Control (ATC) .......................................45
Automatic Transaxle ...........................146
Automatic Transmission......................147
Adding Fluid ..................................265
Fluid Level Check ...........................236
Fluid Type .....................................265
Autostick...........................................148
AUX Cord ..........................................286
Auxiliary (Power Outlet) ........................55
B
Battery ........................................ 65 , 236
Charging System Light ......................65
Battery Saver Feature ...........................33
Belts, Seat ........................................135
Blind Spot Monitoring ..........................87
Brake Assist System ....................... 77 , 90
Brake Control System ...........................77
Brake Fluid ............................... 235 , 265
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327
Energy Management Feature ........... 106
Front Seat ........................99, 100 , 102
Inspection ..................................... 135
Lap/Shoulder Belt Operation............ 102
Lap/Shoulder Belt Untwisting .......... 103
Lap/Shoulder Belts ......................... 100
Operating Instructions .................... 102
Pregnant Women ............................ 106 Pretensioners ................................. 106
Rear Seat ...................................... 100
Reminder ........................................ 99
Seat Belt Pretensioner .................... 106
Seat Belt Reminder .......................... 99
Untwisting Procedure ..................... 103
Seat Belts Maintenance...................... 253
Seats .................................................. 22 Adjustment ...................................... 22
Easy Entry ....................................... 24
Head Restraints ............................... 26
Heated ...................................... 24 , 25
Memory ........................................... 23
Rear Folding .................................... 22
Tilting ............................................. 22
Ventilated ........................................ 25
Security Alarm............................... 18 , 67
Arm The System ............................... 18
Disarm The System .......................... 18
Selec-Terrain..................................... 153
Selection Of Coolant (Antifreeze) ......... 262 Sentry Key Replacement ...................... 14
Service Assistance ............................. 308
Shift Lever Override ........................... 213
Shifting Automatic Transmission ................. 147Manual Transmission ..................... 143
Shoulder Belts .................................. 100
Signals, Turn ...............................73 , 137
Siri .................................................. 305
Snow Chains (Tire Chains) .................. 249
Snow Tires ........................................ 246
Spare Tires ................................246 , 247
Spark Plugs ...................................... 262
Specifications Fuel (Gasoline) .............................. 262
Oil ................................................ 262
Speed Control Accel/Decel ................................... 160
Cancel ...................................160 , 161
Resume ........................................ 160
Set ............................................... 160
Speed Control (Cruise Control) .....160 , 161
Speed Limiter, Active ........................ 159
Starting ............................................ 138 Button ............................................ 15
Remote ........................................... 17
Starting Procedures ........................... 138
Steering Tilt Column ..................................... 28
Wheel, Heated ................................. 28 Steering Wheel Audio Controls.............286
Stop/Start............................................73
Storage, Vehicle ...................................46
Stuck, Freeing ...................................214
Sun Roof ....................................... 49
, 51
Closing ............................................49 Opening...........................................49
Sunshade Operation .............................49
Sway Control, Trailer ............................87
System, Remote Starting ......................17
T
Temperature Control,
Automatic (ATC) ..................................45
Text Messages ........................... 271 , 297
Time Delay Headlight.........................................32
Tire Service Kit ...........203 , 204 , 208 , 209
Tires ..........................137 , 241 , 246 , 247
Aging (Life Of Tires)........................244
Air Pressure ...................................241
Chains ...........................................249 Changing ............................... 194 , 241
Compact Spare...............................247
General Information ........ 241 , 246 , 247
High Speed ....................................242
Inflation Pressure ...........................242
Jacking .................................. 194 , 241
Life Of Tires ...................................244
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