2012 JEEP GRAND CHEROKEE service

•Anytime 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 the fresh air and
high blower setting. This will ensure ad-
equate system lubrication to minimize the
possibility of compressor damage when the
system is started again.
REPLACEMENT BULBS
Interior Lights Bulb Type
Glove Box Lamp ..............194
Grab Handle Lamp .......L002825W5W
Overhead Console Reading Lamps . . VT4976
Rear Cargo Lamp ............ 214–2
Visor Vanity Lamp ...........V26377
Underpanel Courtesy Lamps ........906
Instrument Cluster
(General Illumination) ............103
Telltale/Hazard Lamp .............74 Exterior Lights
Bulb Type
Headlamps (Low/High Beam) – High
Intensity Discharge (HID) .........D1S
(Serviced at Authorized Dealer)
Daytime Running Lamp (DRL) /
Front Position ........3157K (P27/7WK)
Front Turn Signal Lamp . . . 7440NA(WY21W)
Front Fog Lamps ........... PSX24W
Front Side Marker .............W5W
Rear Turn Signal Lamps . . 7440NA (WY21W)
Auxiliary Liftgate Tail Lamps .......W3W
Liftgate Backup Lamps ......921(W16W)
Rear License Lamps ...........W5W
Rear Stop/Tail Lamps .....3157 (P27/7W)
Rear Fog Lamps .........7440 (W21W)
WARNING!
A transient high voltage occurs at the bulb
sockets of High Intensity Discharge (HID)
headlamps when the headlamp switch is
turned ON. It may cause serious electrical
shock or electrocution if not serviced properly.
See your authorized dealer for service. NOTE:
Numbers refer to commercial bulb types
that can be purchased from your authorized
dealer.
If a bulb needs to be replaced, visit your
authorized dealer or refer to the applicable
Service Manual.
BULB REPLACEMENT
High Intensity Discharge Headlamps
(HID) – If Equipped
The headlamps are a type of high voltage
discharge tube. High voltage can remain in the
circuit even with the headlamp switch off and
the key removed.
Because of this, you should
not attempt to service a headlamp bulb your-
self. If a headlamp bulb fails, take your
vehicle to an authorized dealer for service.
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WARNING!
A transient high voltage occurs at the bulb
sockets of High Intensity Discharge (HID)
headlamps when the headlamp switch is
turned ON. It may cause serious electrical
shock or electrocution if not serviced properly.
See your authorized dealer for service.
NOTE:
On vehicles equipped with High Intensity
Discharge (HID) headlamps, when the head-
lamps are turned on, there is a blue hue to
the lamps. This diminishes and becomes
more white after approximately 10 seconds,
as the system charges.
Halogen Headlamps – If Equipped
1. Open the hood.
2. Turn the low or high beam bulb one–quarter
turn counterclockwise to remove from housing.
3. Disconnect the electrical connector and re-
place the bulb.
CAUTION!
Do not touch the new bulb with your fingers.
Oil contamination will severely shorten bulb
life. If the bulb comes in contact with any oily
surface, clean the bulb with rubbing alcohol.
Front Turn Signal
1. Open the hood.
2. Turn the turn signal bulb one–quarter turn
counterclockwise to remove from housing.
3. Disconnect the electrical connector and re-
place the bulb.
CAUTION!
Do not touch the new bulb with your fingers.
Oil contamination will severely shorten bulb
life. If the bulb comes in contact with any oily
surface, clean the bulb with rubbing alcohol.
Front Fog Lamps
1. Reach through the cutout in the splash
shield and disconnect the wiring harness from
the fog lamp connector. 2. Firmly grasp the bulb by the two latches and
squeeze them together to unlock the bulb from
the back of the front fog lamp housing.
3. Pull the bulb straight out from the keyed
opening in the housing.
CAUTION!
•
Do not touch the new bulb with your fin-
gers. Oil contamination will severely
shorten bulb life. If the bulb comes in
contact with any oily surface, clean the bulb
with rubbing alcohol.
• Always use the correct bulb size and type
for replacement. An incorrect bulb size or
type may overheat and cause damage to
the lamp, the socket or the lamp wiring.
4. Align the index tabs of the front fog lamp
bulb with the slots in the collar of the bulb
opening on the back of the front fog lamp
housing.
5. Insert the bulb into the housing until the
index tabs are engaged in the slots of the collar.
323

FLUIDS, LUBRICANTS, AND GENUINE PARTS
Engine
ComponentFluid, Lubricant, or Genuine Part
Engine Coolant MOPARAntifreeze/Coolant 5 Year/100,000 Mile Formula HOAT (Hybrid Organic Additive Technol-
ogy) or equivalent.
Engine Oil – Non ACEA Categories
(3.6L Engine) Use API Certified SAE 5W-30 engine oil, meeting the requirements of Chrysler Material Standard
MS-6395. Refer to your engine oil filler cap for correct SAE grade.
Engine Oil – ACEA Categories
(3.6L Engine) For countries that use the ACEA European Oil Categories for Service Fill Oils, use engine oils
meeting the requirements of ACEA C3, and approved to MB 229.31 or MB 229.51.
Engine Oil – Non ACEA Categories
(5.7L Engine) Use API Certified SAE 5W-20 engine oil, meeting the requirements of Chrysler Material Standard
MS-6395. Refer to your engine oil filler cap for correct SAE grade. SAE 5W-30 engine oil ap-
proved to MB 229.31 or MB 229.51 may be used when SAE 5W-20 engine oil is not available.
Engine Oil – ACEA Categories
(5.7L Engine) For countries that use the ACEA European Oil Categories for Service Fill Oils, use engine oils
meeting the requirements of ACEA C3, and approved to MB 229.31 or MB 229.51. SAE 5W-30
engine oil approved to MB 229.31 or MB 229.51 may be used when SAE 5W-20 engine oil is not
available.
Engine Oil – 3.0L Diesel Engine Use SAE 5W-30 Synthetic Low Ash Engine Oil, meeting the requirements of Chrysler Material
Standard MS-11106 and approved to MB 229.31 or MB 229.51 and ACEA C3.
Engine Oil Filter MOPAREngine Oil Filter or equivalent.
Spark Plugs – 3.6L Engine RER8ZWYCB4 (Gap 0.043 in [1.1 mm])
327

ComponentFluid, Lubricant, or Genuine Part
Spark Plugs – 5.7L Engine LZFR5C–11G (Gap 0.043 in [1.1 mm])
Fuel Selection – 3.6L Engine 91 Octane
Fuel Selection – 5.7L Engine 91 Octane Acceptable - 95 Octane Recommended
Fuel Selection – 3.0L Diesel Engine Use good quality diesel fuel from a reputable supplier in your vehicle. The manufacturer requires
that you must fuel this vehicle with Ultra Low Sulfur Highway Diesel fuel (15 ppm Sulfur maximum)
and prohibits the use of Low Sulfur Highway Diesel fuel (500 ppm Sulfur maximum) to avoid dam-
age to the emissions control system. For most year-round service, No. 2 diesel fuel meeting ASTM
specification D-975 Grade S15 will provide good performance. If the vehicle is exposed to extreme
cold (below 20F or -7C), or is required to operate at colder-than-normal conditions for prolonged
periods, use climatized No. 2 diesel fuel or dilute the No. 2 diesel fuel with 50% No. 1 diesel fuel.
This will provide better protection from fuel gelling or wax-plugging of the fuel filters. This vehicle is
fully compatible with biodiesel blends up to 5% biodiesel meeting ASTM specification D-975.
328

MAINTENANCE SCHEDULE
Maintenance Schedule – Gasoline
Engine
The Scheduled Maintenance services listed in
this manual must be done at the times or
mileages specified to protect your vehicle war-
ranty and ensure the best vehicle performance
and reliability. More frequent maintenance may
be needed for vehicles in severe operating
conditions, such as dusty areas and very short
trip driving. Inspection and service should also
be done anytime a malfunction is suspected.
The oil change indicator system will remind you
that it is time to take your vehicle in for sched-
uled maintenance.
On Electronic Vehicle Information Center
(EVIC) equipped vehicles “Oil Change Re-quired” will be displayed in the EVIC and a
single chime will sound, indicating that an oil
change is necessary.
The oil change indicator message will illumi-
nate approximately 7,000 miles (11 200 km)
after the most recent oil change was per-
formed. Have your vehicle serviced as soon as
possible, within 500 miles (800 km).
NOTE:
•
The oil change indicator message will not
monitor the time since the last oil change.
Change your vehicles oil if it has been
6 months since your last oil change even
if the oil change indicator message is
NOT illuminated.
• Change your engine oil more often if you
drive your vehicle off-road for an ex-
tended period of time. •
Under no circumstances should oil
change intervals exceed 7,500 miles
(12 000 km) or 6 months, whichever
comes first.
Your authorized dealer will reset the oil change
indicator message after completing the sched-
uled oil change. If this scheduled oil change is
performed by someone other than your autho-
rized dealer the message can be reset by
referring to the steps described under ”Elec-
tronic Vehicle Information Center” in “Under-
standing Your Instrument Panel” for further in-
formation.
332

7,500 Miles (12,000 km) or
6 Months Maintenance Service
Schedule
❏Change the engine oil and engine oil
filter.††
❏ Rotate tires.
Odometer Reading Date
Repair Order #Dealer Code
Signature, Authorized Service Center
15,000 Miles (24,000 km) or 12 Months Maintenance Service
Schedule
❏Change the engine oil and engine oil filter.††
❏ Rotate tires.
❏ If using your vehicle for any of the following: Dusty or off-road conditions. Inspect the
engine air cleaner filter; replace if necessary.
❏ Replace the air conditioning filter.
❏ Inspect the brake linings, replace if necessary.
❏ Inspect the CV joints.
❏ Inspect exhaust system.
Odometer Reading Date
Repair Order #Dealer Code
Signature, Authorized Service Center
334

22,500 Miles (36,000 km) or
18 Months Maintenance Service
Schedule
❏Change the engine oil and engine oil
filter.††
❏ Rotate tires.
❏ Inspect the CV joints.
❏ Inspect exhaust system.
❏ Inspect the front suspension, tie rod ends
and boot seals; replace if necessary.
❏ Inspect the front and rear axle fluid,
change if using your vehicle for police,
taxi, fleet, off-road or frequent trailer
towing.
Odometer Reading Date
Repair Order #Dealer Code
Signature, Authorized Service Center
30,000 Miles (48,000 km) or 24 Months Maintenance Service
Schedule
❏Change the engine oil and engine oil filter.††
❏ Rotate tires.
❏ Replace the engine air cleaner filter.
❏ Replace the air conditioning filter.
❏ Replace the spark plugs (5.7L Engine).
❏ Adjust parking brake on vehicles equipped with four-wheel disc brakes.
❏ Inspect the brake linings, replace if necessary.
❏ Inspect the transfer case fluid.
Odometer Reading Date
Repair Order #Dealer Code
Signature, Authorized Service Center
335

37,500 Miles (60,000 km) or
30 Months Maintenance Service
Schedule
❏Change the engine oil and engine oil
filter.††
❏ Rotate tires.
Odometer Reading Date
Repair Order #Dealer Code
Signature, Authorized Service Center
45,000 Miles (72,000 km) or 36 Months Maintenance Service
Schedule
❏Change the engine oil and engine oil filter.††
❏ Rotate tires.
❏ If using your vehicle for any of the following: Dusty or off-road conditions. Inspect the
engine air cleaner filter; replace if necessary.
❏ Replace the air conditioning filter.
❏ Inspect the brake linings, replace if necessary.
❏ Inspect the CV joints.
❏ Inspect exhaust system.
❏ Inspect the front suspension, tie rod ends and boot seals; replace if necessary.
❏ Inspect the front and rear axle fluid, change if using your vehicle for police, taxi, fleet,
off-road or frequent trailer towing.
Odometer Reading Date
Repair Order #Dealer Code
Signature, Authorized Service Center
336