2010 JEEP GRAND CHEROKEE engine

CAUTION!
Driving with a hot cooling system could damage
your vehicle. If the temperature gauge reads HOT
(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 HOT (H), and you hear continuous
chimes, turn the engine off immediately 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.
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WHAT TO DO IN EMERGENCIES 347

Jacking Instructions
WARNING!
Carefully follow these tire changing warnings to
help prevent personal injury or damage to your
vehicle:
•Always park on a firm, level surface as far from
the edge of the roadway as possible before raising
the vehicle.
•Block the wheel diagonally opposite the wheel to
be raised.
•Set the parking brake firmly and set an automatic
transmission in PARK; a manual transmission in
REVERSE.
•Never start or run the engine with the vehicle on a
jack.
•Do not let anyone sit in the vehicle when it is on a
jack.(Continued)
WARNING! (Continued)
•Do not get under the vehicle when it is on a jack.
•Only use the jack in the positions indicated and
for lifting this vehicle during a tire change.
•If working on or near a roadway, be extremely
careful of motor traffic.
•To assure that spare tires, flat or inflated, are
securely stowed, spares must be stowed with the
valve stem facing the ground.
•Turn on the Hazard Warning flasher.
Jack Warning Label
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WHAT TO DO IN EMERGENCIES 351

Preparations for Jump-Start
The battery in your vehicle is located in the front of the
engine compartment, behind the left headlight assembly.WARNING!
•Take care to avoid the radiator cooling fan when-
ever the hood is raised. It can start anytime the
ignition switch is on. You can be injured by
moving fan blades.
•Remove any metal jewelry such as watch bands or
bracelets that might make an inadvertent electrical
contact. You could be seriously injured.
•Batteries contain sulfuric acid that can burn your
skin or eyes and generate hydrogen gas which is
flammable and explosive. Keep open flames or
sparks away from the battery.
1. Set the parking brake, shift the automatic transmission
into PARK and turn the ignition to LOCK.
2. Turn off the heater, radio, and all unnecessary electri-
cal accessories.
Positive Battery Post
356 WHAT TO DO IN EMERGENCIES

3. If using a another vehicle to jump-start the battery,
park the vehicle within the jumper cables reach, set the
parking brake and make sure the ignition is OFF.
WARNING!
Do not allow vehicles to touch each other as this
could establish a ground connection and personal
injury could result.
Jump-Starting Procedure
WARNING!
Failure to follow this procedure could result in per-
sonal injury or property damage due to battery ex-
plosion.
CAUTION!
Failure to follow these procedures could result in
damage to the charging system of the booster vehicle
or the discharged vehicle.
1. Connect the positive (+)end of the jumper cable to the
positive (+)post of the discharged vehicle.
2. Connect the opposite end of the positive (+)jumper
cable to the positive (+)post of the booster battery.
3. Connect the negative end (-)of the jumper cable to the
negative (-)post of the booster battery.
4. Connect the opposite end of the negative (-)jumper
cable to a good engine ground (exposed metal part of the
discharged vehicle’s engine) away from the battery and
the fuel injection system.
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WHAT TO DO IN EMERGENCIES 357

WARNING!
Do not connect the cable to the negative post (-) of the
discharged battery. The resulting electrical spark
could cause the battery to explode and could result in
personal injury.
5. Start the engine in the vehicle that has the booster
battery, let the engine idle a few minutes, and then start
the engine in the vehicle with the discharged battery.
Once the engine is started, remove the jumper cables in
the reverse sequence:
6. Disconnect the negative (-)jumper cable from the
engine ground of the vehicle with the discharged battery.
7. Disconnect the negative end (-)of the jumper cable
from the negative (-)post of the booster battery. 8. Disconnect the opposite end of the positive
(+)jumper
cable from the positive (+)post of the booster battery.
9. Disconnect the positive (+)end of the jumper cable
from the positive (+)post of the discharged vehicle.
10. Reinstall the air intake duct.
If frequent jump-starting is required to start your vehicle
you should have the battery and charging system in-
spected at your authorized dealer.
CAUTION!
Accessories that can be plugged into the vehicle
power outlets draw power from the vehicle’s battery,
even when not in use (i.e., cellular phones, etc.).
Eventually, if plugged in long enough, the vehicle’s
battery will discharge sufficiently to degrade battery
life and/or prevent the engine from starting.
358 WHAT TO DO IN EMERGENCIES

MAINTAINING YOUR VEHICLE
CONTENTS
Engine Compartment – 3.7L .............. 363
 Engine Compartment – 5.7L .............. 364
 Onboard Diagnostic System – OBD II ....... 365
▫ Loose Fuel Filler Cap Message ........... 365
 Emissions Inspection And Maintenance
Programs ............................ 366
 Replacement Parts ..................... 368
 Dealer Service ........................ 368
 Maintenance Procedures ................. 368
▫ Engine Oil ......................... 369 ▫
Engine Oil Filter ..................... 372
▫ Engine Air Cleaner Filter ............... 372
▫ Maintenance-Free Battery .............. 373
▫ Air Conditioner Maintenance ............ 374
▫ Body Lubrication .................... 375
▫ Windshield Wiper Blades ............... 376
▫ Adding Washer Fluid ................. 376
▫ Exhaust System ..................... 377
▫ Cooling System ..................... 380
7

▫Brake System ....................... 385
▫ Front/Rear Axle Fluid ................. 387
▫ Transfer Case ....................... 388
▫ Automatic Transmission ............... 389
▫ Maintenance After Off-Road Driving ...... 392
▫ Appearance Care And Protection From
Corrosion .......................... 393
 Fuses .............................. 398
▫ Interior Fuses ....................... 398
▫ Underhood Fuses
(Power Distribution Center) ............. 401
▫
Underhood Fuses (Integrated Power Module). . 404
 Vehicle Storage ....................... 406
 Replacement Bulbs .................... 406 
Bulb Replacement ..................... 407
▫ High Intensity Discharge Headlamps (HID)
— If Equipped ...................... 407
▫ Halogen Headlamps — If Equipped ....... 408
▫ Front Turn Signal .................... 409
▫ Front Fog Lamp ..................... 410
▫ Rear Tail, Stop, Turn Signal, And Backup
Lamps ............................ 410
▫ Center High-Mounted Stop Lamp
(CHMSL) .......................... 412
 Fluid Capacities ...................... 413
 Fluids, Lubricants, And Genuine Parts ....... 414
▫ Engine ............................ 414
▫ Chassis ........................... 415
362 MAINTAINING YOUR VEHICLE

ENGINE COMPARTMENT – 3.7L
1 — Engine Coolant Reservoir6 — Washer Fluid Reservoir
2 — Engine Oil Dipstick 7 — Battery
3 — Brake Fluid Reservoir 8 — Engine Oil Fill
4 — Power Distribution Center 9 — Coolant Pressure Cap
5 — Integrated Power Module 10 — Air Cleaner Filter
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MAINTAINING YOUR VEHICLE 363