2008 JEEP GRAND CHEROKEE tire pressure

WARNING!
Exhaust gases can injure or kill. They contain carbon
monoxide (CO) which is colorless and odorless.
Breathing it can make you unconscious and can even-
tually poison you. To avoid breathing CO, refer to
Exhaust Gas in the Safety Tips section of this manual.
Cooling System
WARNING!
You or others can be badly burned by hot antifreeze/
coolant or steam from your radiator. If you see or hear
steam coming from under the hood, don't 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.
Engine Coolant Checks
Check antifreeze/coolant protection every 12 months
(before the onset of freezing weather, where applicable).
If antifreeze/coolant is dirty or rusty in appearance, the
system should be drained, flushed and refilled with fresh
antifreeze/coolant. 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.
With the engine at normal operating temperature (but
not running), check the cooling system pressure cap for
proper vacuum sealing by draining a small amount of
coolant from the radiator drain cock. If the cap is sealing
properly, the antifreeze/coolant will begin to drain from
MAINTAINING YOUR VEHICLE 407
7

Cav-
ityCartridge
FuseMini Fuse Description
13 10 Amp
RedAutowipe (R/A)
14 20 Amp
YellowCigar Ltr (R/A)
15 10 Amp
RedTire Pressure Trans-
ducers (R/O)
16 10 Amp
RedSteering Control Mod-
ule (SCM), Diag. Con-
nector, Cluster (B+)
17 15 Amp
BlueFlipper Glass (B+)
19 Spare
(R/S)
20 10 Amp
RedSentry Key Remote
Entry Module
(SKREEM), Cluster
(R/S)Cav-
ityCartridge
FuseMini Fuse Description
21 Spare
(Acc De-
lay)
22 15 Amp
BlueRear Wiper (B+)
24 10 Amp
RedPower Distribution
Center (PDC) Relays,
Final Drive Control
Module (FDCM),
Front Control Module
(FCM) (R/S), A580
(R/S)
25 10 Amp
RedShifter Assy (BTSI),
Trans. Case Switch,
ESP/ABS, Brake Supp
Rly Coil (R/S)
428 MAINTAINING YOUR VEHICLE

²Change your engine oil more often if you drive your
vehicle off-road for an extended period of time.
²Under no circumstances should oil change intervals
exceed 6,000 miles (10,000 km) or 6 months, whichever
comes first.
Your dealer will reset the oil change indicator message
after completing the scheduled oil change. If this sched-
uled oil change is performed by someone other than your
dealer the message can be reset by referring to the steps
described under ªOil Change Requiredº in ªUse Factory
Settingsº of the EVIC section in this manual.
At Each Stop for Fuel
²Check the engine oil level about 5 minutes after a fully
warmed engine is shut off. Checking the oil level while
the vehicle is on level ground will improve the accu-
racy of the oil level reading. Add oil only when the
level is at or below the ADD or MIN mark.
²Check the windshield washer solvent and add if
required.
Once a Month
²Check tire pressure and look for unusual wear or
damage.
²Inspect the battery and clean and tighten the terminals
as required.
²Check the fluid levels of coolant reservoir, brake
master cylinder, power steering and transmission and
add as needed.
²Check all lights and other electrical items for correct
operation.
MAINTENANCE SCHEDULES 445
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²Off-road or desert driving.
NOTE:Most vehicles are operated under the conditions
listed for Schedule ªB.º
Second is ScheduleªAº. It is for vehicles that are not
operated under any of the conditions listed under Sched-
ule ªB.º
Use the schedule that best describes your driving condi-
tions. Where time and mileage are listed, follow the
interval that occurs first.
CAUTION!
Failure to perform the required maintenance items
may result in damage to the vehicle.At Each Stop for Fuel
²Check the engine oil level about 5 minutes after a fully
warmed engine is shut off. Checking the oil level while
the vehicle is on level ground will improve the accu-
racy of the oil level reading. Add oil only when the
level is at or below the ADD or MIN mark.
²Check the windshield washer solvent, add as required.
Once a Month
²Check the tire pressure and look for unusual wear or
damage.
²Inspect the battery, clean and tighten the terminals as
required.
²Check the fluid levels of engine coolant/anti-freeze
deaeration bottle, brake master cylinder, and transmis-
sion, and add as needed.
450 MAINTENANCE SCHEDULES
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Miles 6,250 12,500 18,750 25,000 31,250
(Kilometers) (10 000) (20 000) (30 000) (40 000) (50 000)
Change the engine oil and engine oil filter. X X X X X
Rotate the tires. X X X
Check spare tire for proper pressure and correct
stowage.X X XXX
Inspect the engine air filter element. Replace as
necessary.XXX
Replace the engine air filter element.XX
Replace the fuel filter/water separator unit. X
Inspect the brake linings. X X
Drain the transfer case and refill.X
Drain and refill the front and rear axles. X X
SCHEDULE ªBº Ð DIESEL ENGINE 453
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Miles 37,500 43,750 50,000 56,250 62,500
(Kilometers) (60 000) (70 000) (80 000) (90 000) (100 000)
Change the engine oil and engine oil filter. X X X X X
Rotate the tires. X X
Check spare tire for proper pressure and correct
stowage.X X XXX
Inspect the engine air filter element. Replace as
necessary.XX
Replace the engine air filter element.XXX
Replace the fuel filter/water separator unit. X
Replace the engine accessory drive belt. X
Inspect the brake linings. X X X
Drain and refill the front and rear axles. X X X
Drain and refill the transmission fluid, and change
the filter.X
Drain the transfer case and refill.X
454 SCHEDULE ªBº Ð DIESEL ENGINE
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Miles 68,750 75,000 81,250 87,500 93,750 100,000
(Kilometers) (110 000) (120 000) (130 000) (140 000) (150 000) (160 000)
Change the engine oil and engine oil filter. X X X X X X
Rotate the tires. X X X
Check spare tire for proper pressure and cor-
rect stowage.XXXXXX
Inspect the engine air filter element. Re-
place as necessary.XXX
Replace the engine air filter element.XXX
Replace the engine accessory drive belt. X
Replace the fuel filter/water separator unit. X X
Flush and replace the engine coolant/anti-
freeze.X
Inspect the brake linings. X X
Drain the transfer case and refill. X
Drain and refill the front and rear axles. X X
SCHEDULE ªBº Ð DIESEL ENGINE 455
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Schedule ªAº Ð Diesel Engine
Miles 12,500 25,000 37,500 50,000
(Kilometers) (20 000) (40 000) (60 000) (80 000)
Change the engine oil and engine oil filter. X X X X
Rotate the tires. X X X X
Check spare tire for proper pressure and correct stowage. X X X X
Inspect the engine air filter element. Replace as neces-
sary.XX
Replace the engine air filter element.XX
Replace the fuel filter/water separator unit. X X
Inspect the brake linings. X X
Drain the transfer case and refill. X X
SCHEDULE ªAº Ð DIESEL ENGINE 457
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