2018 JEEP COMPASS overheating

3. When the system is set up for your comfort
level, it is not necessary to change the
settings. You will experience the greatest
efficiency by simply allowing the system
to function automatically.
NOTE:
• It is not necessary to move the temperature
settings for cold or hot vehicles. The system
automatically adjusts the temperature,
mode, and blower speed to provide comfort
as quickly as possible.
• The temperature can be displayed in U.S.
or Metric units by selecting the US/Metric
customer-programmable feature.
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
Summer Operation
The engine cooling system must be protected
with a high-quality antifreeze coolant to pro-
vide proper corrosion protection and to pro-
tect against engine overheating. OAT coolant
(conforming to MS.90032) is recommended.
Winter Operation
To ensure the best possible heater and de-
froster 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 rec-
ommended, 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 ad-equate 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.
Outside Air Intake
Make sure the air intake, located directly in
front of the windshield, is free of obstruc-
tions, such as leaves. Leaves collected in the
air intake may reduce airflow, and if they
enter the plenum, they could plug the water
drains. In Winter months, make sure the air
intake is clear of ice, slush, and snow.
Cabin Air Filter
The climate control system filters out dust
and pollen from the air. Contact an autho-
rized dealer to service your cabin air filter,
and to have it replaced when needed.
47

Stopping The Engine
Vehicles Equipped With A Mechanical Key Fob:
To turn off the engine, proceed as follows:
1. Park the car in a position that does not
cause a traffic hazard.
2. Place the transmission in gear (models
with a manual transmission) or place the
transmission in PARK (P) (models with
automatic transmission).
3. With the engine idling, place the ignition
in the STOP/OFF position.
4. Remove the key from the ignition when
the engine is shut off.
Vehicles Equipped With Electronic Key (Keyless
Ignition):
To shut off the engine with vehicle speed
greater than 5 mph (8 km/h), you must push
and hold the ignition or push the START/
STOP button three times consecutively
within a few seconds. The engine will shut
down, and the ignition will be placed in the
RUN position.Turning Off the car (placing the ignition from
the RUN position to the STOP position), the
power supply to the accessories are main-
tained for a period of three minutes.
Opening the driver side door with the ignition
in RUN will sound a short chime that reminds
the driver to place the ignition to STOP.
When the ignition is in the STOP/OFF posi-
tion, the window switches remains active for
three minutes. Opening a front door will can-
cel this function.
After severe driving, idle the engine to allow
the temperature inside the engine compart-
ment to cool before shutting off the engine.
Normal Starting — Diesel Engine
Before starting your vehicle, adjust your seat,
both inside and outside mirrors, and fasten
your seat belts.
The starter is allowed to crank for up to
30-second intervals. Waiting a few minutes
between such intervals will protect the starter
from overheating.
WARNING!
• Before exiting a vehicle, always come to
a complete stop, then shift the auto-
matic transmission into PARK and apply
the parking brake.
• Always make sure the keyless ignition
node is in the OFF mode, key fob is
removed from the vehicle and vehicle is
locked.
• Never leave children alone in a vehicle,
or with access to an unlocked vehicle.
Leaving children in a vehicle unattended
is dangerous for a number of reasons. A
child or others could be seriously or
fatally injured. Children should be
warned not to touch the parking brake,
brake pedal or the gear selector.
• Do not leave the key fob in or near the
vehicle, or in a location accessible to
children, and do not leave the ignition of
a vehicle equipped with Keyless Enter-
N-Go in the ACC or ON/RUN mode. A
child could operate power windows,
other controls, or move the vehicle.
143

WARNING!
Do not coast in NEUTRAL and never turn
off the ignition to coast down a hill. These
are unsafe practices that limit your re-
sponse to changing traffic or road condi-
tions. You might lose control of the vehicle
and have a collision.
CAUTION!
Towing the vehicle, coasting, or driving for
any other reason with the transmission in
NEUTRAL can cause severe transmission
damage.
Refer to “Recreational Towing” in “Start-
ing And Operating” and “Towing A Dis-
abled Vehicle” in “In Case Of Emergency”
for further information.
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 up-shifts through all forward gears. The DRIVE
position provides optimum driving character-
istics under all normal operating conditions.
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 (refer to
"AutoStick" in this section for further infor-
mation). Under these conditions, using a
lower gear will improve performance and ex-
tend transmission life by reducing excessive
shifting and heat buildup.
If the transmission temperature exceeds nor-
mal operating limits, the transmission con-
troller may modify the transmission shift
schedule, reduce engine torque, and/or ex-
pand the range of torque converter clutch
engagement. This is done to prevent trans-
mission 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 transmis-
sion cools down.During cold temperatures, transmission op-
eration may be modified depending on en-
gine and/or 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, for the
nine-speed, shifts into 8th or 9th gear), are
inhibited until the engine and/or transmis-
sion is warm (refer to the “Note” under
“Torque Converter Clutch” in this section).
Normal operation will resume once the tem-
perature(s) have risen to a suitable level.
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, elimi-
nate undesirable upshifts and downshifts,
and improve overall vehicle performance.
This system can also provide you with more
control during passing, city driving, cold slip-
pery conditions, mountain driving, trailer
towing, and many other situations.
155

IF YOUR ENGINE
OVERHEATS
In any of the following situations, you can
reduce the potential for overheating your en-
gine by taking the appropriate action.
• On the highways — slow down.
• In city traffic — while stopped, place the
transmission in NEUTRAL, but do not in-
crease engine idle speed.
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 con-
ditioner turned off until the pointer drops
back into the normal range. If the pointer
remains on the “H” and you hear continu-
ous chimes, turn the engine off immedi-
ately and call for service.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.
• 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 supplement to
the radiator and aids in removing heat from
the engine cooling system.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.
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 tem-
porarily move the gear selector:
1. Turn the engine OFF.
2. Apply the park brake.
3. Grasp the boot material rearward of the
gear selector and pull up to carefully
separate the gear selector bezel and boot
assembly from the center console.
Gear Selector Bezel
IN CASE OF EMERGENCY
214

CAUTION!
• Racing the engine or spinning the
wheels may lead to transmission over-
heating 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.
CAUTION!
• When “rocking” a stuck vehicle by shift-
ing between DRIVE/ SECOND gear and
REVERSE, do not spin the wheels faster
than 15 mph (24 km/h), or drivetrain
damage may result.
• Revving the engine or spinning the
wheels too fast may lead to transmission
overheating and failure. It can also dam-
age the tires. Do not spin the wheels
CAUTION!
above 30 mph (48 km/h) while in gear
(no transmission shifting occurring).
TOWING A DISABLED
VEHICLE
This section describes procedures for towing
a disabled vehicle using a commercial towing
service.
Towing Condition Wheels OFF The
GroundFWD MODELS 4X4 MODELS
Flat Tow NONENOT ALLOWED NOT ALLOWED
Wheel Lift Or Dolly TowRearNOT ALLOWED NOT ALLOWED
Front OKNOT ALLOWED
FlatbedALL BEST METHOD ONLY METHOD
Proper towing or lifting equipment is required
to prevent damage to your vehicle. Use only
tow bars and other equipment designed for
this purpose, following equipment manufac-
turer’s instructions. Use of safety chains is
mandatory. Attach a tow bar or other towing
devices to main structural members of thevehicle, not to bumpers or associated brack-
ets. State and local laws regarding vehicles
under tow must be observed.
IN CASE OF EMERGENCY
216

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 and Vehicle Stability
• Economy
• Tread Wear
• Ride Comfort
Safety
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 re-
sult in tire failure.
WARNING!
• Overinflated or underinflated tires can
affect vehicle handling and can fail sud-
denly, resulting in loss of vehicle con-
trol.
• Unequal tire pressures can cause steer-
ing 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
pressure.
Both under-inflation and over-inflation 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 steer-
ing response.
• Unequal tire pressure from side to side may
cause the vehicle to drift left or right.Fuel EconomyUnderinflated tires will increase tire rolling re-
sistance resulting in higher fuel consumption.
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.
Tire Inflation Pressures
The proper cold tire inflation pressure is
listed on the left side B-Pillar or rear edge of
the passenger door.
At least once a month:
• Check and adjust tire pressure with a good
quality pocket-type pressure gauge. Do not
make a visual judgement when determining
proper inflation. Tires may look properly
inflated even when they are under-inflated.SERVICING AND MAINTENANCE
238

Car Washes..................248
Chains, Tire..................244
Changing A Flat Tire.........199, 237
Check Engine Light (Malfunction
Indicator Light)..............72
Checking Your Vehicle For Safety. . . .136
Checks, Safety................136
Child Safety Locks..............25
Cleaning
Wheels..................247
Windshield Wiper Blades.......235
Climate Control................40
Manual...................40
Clock.....................266
Clock Setting.................266
Compact Spare Tire.............243
Computer, Trip/Travel.............61
Cooling System...............235
Coolant Capacity............258
Coolant Level..............236
Selection Of Coolant
(Antifreeze)............258, 259
Corrosion Protection............247
Cruise Light.............69, 70, 71
Customer Assistance............316
Customer Programmable Features. . . .290Daytime Running Lights........34, 35
Dealer Service................234
Defroster, Windshield............137
Diagnostic System, Onboard........71
Diesel Fuel..................257
Diesel Fuel Requirements.........257
Dimmer Switch, Headlight.......34, 35
Dipsticks
Oil (Engine)...............233
Disabled Vehicle Towing..........216
Disturb.................302, 311
Door Ajar.................62, 63
Door Ajar Light..............62, 63
Driver's Seat Back Tilt............25
Electrical
Outlet, Auxiliary (Power Outlet).56
Electric Parking Brake...........145
Electronic Brake Control System......77
Anti-Lock Brake System........76
Traction Control System........77
Electronic Speed Control (Cruise
Control)..................162
Electronic Stability Control (ESC).....79
Electronic Throttle Control Warning Light.63
Emergency, In Case Of
Hazard Warning Flasher........186
Jacking..............199, 237Jump Starting..............211
Overheating...............214
Tow Hooks................218
Towing..................216
Emission Control System Maintenance . .72
Engine.....................230
Checking Oil Level...........233
Coolant (Antifreeze)..........259
Cooling..................235
Exhaust Gas Caution.......136, 257
Jump Starting..............211
Oil .................258, 259
Oil Filler Cap..............230
Oil Selection..............258
Overheating...............214
Starting.................141
Enhanced Accident Response Feature .220
Exhaust Gas Caution.........136, 257
Exhaust System...............136
Exterior Lighting...............34
Exterior Lights.............34, 138
Filters
Air Conditioning..........47, 235
Engine Oil................259
Flashers
Hazard Warning.............186
INDEX
334

Capacity.................258
Checking.................233
Dipstick.................233
Filter...................259
Pressure Warning Light.........63
Recommendation............258
Viscosity.................258
Oil Pressure Light...............63
Onboard Diagnostic System.........71
Operating Precautions............71
Outside Rearview Mirrors..........34
Overheating, Engine............214
Paddle Shifters...............155
Paint Care..................247
Parking Brake................145
ParkSense Active Park Assist.......172
ParkSense System, Front And Rear . . .169
ParkSense System, Rear......167, 169
Passenger Air Bag Disable OFF......109
Passenger Air Bag Disable ON......109
Pets......................135
Phone, Hands-Free (Uconnect)......295
Phone (Pairing)...............298
Phone (Uconnect)..............295
Power
Glass Sunroof...............50Inverter..................58
Lift Gate..................54
Outlet (Auxiliary Electrical Outlet) . .56
Windows..................48
Pregnant Women And Seat Belts.....105
Preparation For Jacking..........200
Radial Ply Tires...............239
Radio
Presets...........267, 273, 281
Radio Operation...............267
Radio Screens.............271, 279
Radio (Sound Systems)..........267
Rain Sensitive Wiper System.....37, 38
Rear Camera.................176
Rear Cross Path................
87
Rear ParkSense System . . .167, 169, 176
Rear Seat, Folding............25, 29
Rear Wiper/Washer............37, 39
Recreational Towing.............183
Release, Hood.................53
Reminder, Lights On.............34
Reminder, Seat Belt.............98
Remote Control
Starting System.............17
Remote Keyless Entry............13
Arm The Alarm..............20Disarm The Alarm.............20
Programming Additional Key Fobs . . .19
Remote Starting
Exit Remote Start Mode........18
Remote Starting System...........17
Replacement Keys............14, 19
Replacement Tires.............241
Restraint, Head................30
Roll Over Warning................2
Rotation, Tires................245
Safety Checks Inside Vehicle.......137
Safety Checks Outside Vehicle......138
Safety, Exhaust Gas.............136
Safety Tips..................136
Schedule, Maintenance..........222
Seat Belt
Adjustable Upper Shoulder Belt Anchor-
age ....................102
Lap/Shoulder Belt Operation.....101
Lap/Shoulder Belts............99
Lap/Shoulder Belt Untwisting.....101
Pregnant Women............105
Seat Belt Reminder............98
Seat Belt Maintenance...........250
Seat Belt Reminder..............98
Seat Belts................98, 137
337