2012 JEEP GRAND CHEROKEE service schedule

SPORT
This mode alters the transmission’s automatic shift
schedule for sportier driving. Upshift speeds are in-
creased to make full use of available engine power.
SPORT mode is activated using the rotary switch on the
center console. Refer to “Selec-Terrain” in “Starting And
Operating” for further information.
Transmission Limp Home Mode
Transmission function is monitored electronically for
abnormal conditions. If a condition is detected that could
result in transmission damage, Transmission Limp Home
Mode is activated. In this mode, the transmission remains
in the current gear until the vehicle is brought to a stop.
After the vehicle has stopped, the transmission will
remain in second gear regardless of which forward gear
is selected. PARK, REVERSE, and NEUTRAL will con-
tinue to operate. The Malfunction Indicator Light (MIL)may be illuminated. Limp Home Mode allows the vehicle
to be driven to an authorized dealer for service without
damaging the transmission.
In the event of a momentary problem, the transmission
can be reset to regain all forward gears by performing the
following steps:
1. Stop the vehicle.
2. Shift the transmission into PARK.
3. Turn the engine OFF.
4. Wait approximately 10 seconds.
5. Restart the engine.
6. Shift into the desired gear range. If the problem is no
longer detected, the transmission will return to normal
operation.
388 STARTING AND OPERATING

4. Approximately 15 seconds later, one of two things will
happen:
a. The MIL will flash for about 10 seconds and then
return to being fully illuminated until you turn OFF
the ignition or start the engine. This means that your
vehicle’s OBD II system isnot readyand you should
notproceed to the I/M station.
b. The MIL will not flash at all and will remain fully
illuminated until you turn OFF the ignition or start the
engine. This means that your vehicle’s OBD II system
isreadyand you can proceed to the I/M station.
If your OBD II system isnot ready,you should see your
authorized dealer or repair facility. If your vehicle was
recently serviced or had a battery failure or replacement,
you may need to do nothing more than drive your
vehicle as you normally would in order for your OBD II
system to update. A recheck with the above test routine
may then indicate that the system is now ready.Regardless of whether your vehicle’s OBD II system is
ready or not, if the MIL is illuminated during normal
vehicle operation you should have your vehicle serviced
before going to the I/M station. The I/M station can fail
your vehicle because the MIL is on with the engine
running.
REPLACEMENT PARTS
Use of genuine MOPARparts for normal/scheduled
maintenance and repairs is highly recommended to en-
sure the designed performance. Damage or failures
caused by the use of non-MOPARparts for maintenance
and repairs will not be covered by the manufacturer’s
warranty.
DEALER SERVICE
Your authorized dealer has the qualified service person-
nel, special tools, and equipment to perform all service
operations in an expert manner. Service Manuals are
available which include detailed service information for
474 MAINTAINING YOUR VEHICLE

your vehicle. Refer to these Service Manuals before
attempting any procedure yourself.
NOTE:Intentional tampering with emissions control
systems may void your warranty and could result in civil
penalties being assessed against you.
WARNING!
You can be badly injured working on or around a
motor vehicle. Only do service work for which you
have the knowledge and the proper equipment. If
you have any doubt about your ability to perform a
service job, take your vehicle to a competent me-
chanic.
MAINTENANCE PROCEDURES
The pages that follow contain therequiredmaintenance
services determined by the engineers who designed your
vehicle.
Besides those maintenance items specified in the fixed
maintenance schedule, there are other components which
may require servicing or replacement in the future.
CAUTION!
•Failure to properly maintain your vehicle or per-
form repairs and service when necessary could
result in more costly repairs, damage to other
components or negatively impact vehicle perfor-
mance. Immediately have potential malfunctions
examined by an authorized Chrysler Group LLC
dealership or qualified repair center.
(Continued)
7
MAINTAINING YOUR VEHICLE 475

Disposing Of Used Engine Oil And Oil Filters
Care should be taken in disposing of used engine oil and
oil filters from your vehicle. Used oil and oil filters,
indiscriminately discarded, can present a problem to the
environment. Contact your dealer, service station, or
governmental agency for advice on how and where used
oil and oil filters can be safely discarded in your area.
Engine Oil Filter
The engine oil filter should be replaced with a new filter
at every engine oil change.
Engine Oil Filter Selection
The manufacturer’s engines have a full-flow type oil
filter. Use a filter of this type for replacement. The quality
of replacement filters varies considerably. Only high
quality filters should be used to assure most efficient
service. MOPARengine oil filters are a high quality oil
filter and are recommended.
Engine Air Cleaner Filter
Refer to the “Maintenance Schedule” for the proper
maintenance intervals.
WARNING!
The air cleaner can provide a measure of protection
in the case of engine backfire. Do not remove the air
cleaner unless such removal is necessary for repair or
maintenance. Make sure that no one is near the
engine compartment before starting the vehicle with
the air cleaner removed. Failure to do so can result in
serious personal injury.
Engine Air Cleaner Filter Selection
The quality of replacement engine air cleaner filters
varies considerably. Only high quality filters should be
used to assure most efficient service. MOPARengine air
cleaner filters are a high quality filter and are
recommended.
7
MAINTAINING YOUR VEHICLE 479

MAINTENANCE SCHEDULES
The Scheduled Maintenance services listed in this
manual must be done at the times or mileages specified
to protect your vehicle warranty and ensure the best
vehicle performance and reliability. More frequent main-
tenance 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 scheduled maintenance.
On Electronic Vehicle Information Center (EVIC)
equipped vehicles “Oil Change Required” will be dis-
played in the EVIC and a single chime will sound,
indicating that an oil change is necessary.
Based on engine operation conditions the oil change
indicator message will illuminate, this means that service
is required for your vehicle. Have your vehicle serviced
as soon as possible, within the next 500 miles (805 km).NOTE:•The oil change indicator message will not monitor the
time since the last oil change. Change your vehicle’s
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 extended period of time.
•Under no circumstances should oil change intervals
exceed 6,000 miles (10,000 km) or 6 months, whichever
comes first.
Your authorized dealer will reset the oil change indicator
message after completing the scheduled oil change. If a
scheduled oil change is performed by someone other
than your authorized dealer, the message can be reset by
referring to the steps described under “Electronic Vehicle
8
M
A
I
N
T
E
N
A
N
C
E
S
C
H
E
D
U
L
E
S522 MAINTENANCE SCHEDULES

6,000 Miles (10,000 km) or
6 Months Maintenance Service
Schedule
❏Change the engine oil and engine oil
filter.
Odometer Reading Date
Repair Order # Dealer Code
Signature, Authorized Service Center
12,000 Miles (20,000 km) or 12 Months Maintenance Service
Schedule
❏Change the engine oil and engine oil filter.
❏If using your vehicle for any of the following: Dusty or off-road conditions. Inspect the
engine air cleaner filter; replace if necessary.
❏Inspect the brake linings, replace if necessary.
❏Inspect the CV joints. Perform the first inspection at 12,000 miles (20 000 km) or
12 months.
❏Inspect exhaust system. Perform the first inspection at 12,000 miles (20 000 km) or
12 months.
❏Inspect the front suspension, tie rod ends and boot seals for cracks or leaks and all parts for
damage, wear, improper looseness or end play; replace if necessary.
Odometer Reading Date
Repair Order # Dealer Code
Signature, Authorized Service Center
8
M
A
I
N
T
E
N
A
N
C
E
S
C
H
E
D
U
L
E
S524 MAINTENANCE SCHEDULES

18,000 Miles (30,000 km) or
18 Months Maintenance
Service Schedule
❏Change the engine oil and engine oil
filter.
Odometer Reading Date
Repair Order # Dealer Code
Signature, Authorized Service Center
24,000 Miles (40,000 km) or 24 Months Maintenance Service
Schedule
❏Change the engine oil and engine oil filter.
❏If using your vehicle for any of the following: Dusty or off-road conditions. Inspect the
engine air cleaner filter; replace if necessary.
❏Inspect the brake linings, replace if necessary.
❏Inspect the CV joints.
❏Inspect exhaust system.
❏Inspect the front suspension, tie rod ends and boot seals for cracks or leaks and all parts for
damage, wear, improper looseness or end play; replace if necessary.
Odometer Reading Date
Repair Order # Dealer Code
Signature, Authorized Service Center
8
M
A
I
N
T
E
N
A
N
C
E
S
C
H
E
D
U
L
E
SMAINTENANCE SCHEDULES 525

30,000 Miles (50,000 km) or
30 Months Maintenance
Service Schedule
❏Change the engine oil and engine oil
filter.
❏Replace the engine air cleaner filter.
❏Drain the transfer case and refill.
❏Adjust parking brake on vehicles
equipped with four-wheel disc brakes.
Odometer Reading Date
Repair Order # Dealer Code
Signature, Authorized Service Center
36,000 Miles (60,000 km) or
36 Months Maintenance
Service Schedule
❏Change the engine oil and engine oil
filter.
❏If using your vehicle for any of the
following: Dusty or off-road conditions.
Inspect the engine air cleaner filter;
replace if necessary.
❏Inspect the brake linings, replace if
necessary.
❏
Inspect the front suspension, tie rod ends
and boot seals for cracks or leaks and all
parts for damage, wear, improper
looseness or end play; replace if necessary.
Odometer Reading Date
Repair Order # Dealer Code
Signature, Authorized Service Center
42,000 Miles (70,000 km) or
42 Months Maintenance
Service Schedule
❏Change the engine oil and engine oil
filter.
Odometer Reading Date
Repair Order # Dealer Code
Signature, Authorized Service Center
8
M
A
I
N
T
E
N
A
N
C
E
S
C
H
E
D
U
L
E
S526 MAINTENANCE SCHEDULES