Page 643 of 743

4. Approximately 15 seconds later, one of two things willhappen:
• 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 is not readyand you should
not proceed to the I/M station.
• 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
is ready and you can proceed to the I/M station.
If your OBD II system is not 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 MOPAR® parts for normal/scheduled
maintenance and repairs is highly recommended to en-
sure the designed performance. Damage or failures
caused by the use of non-MOPAR® parts for mainte-
nance and repairs will not be covered by the manufac-
turer’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
7
MAINTAINING YOUR VEHICLE 641
Page 656 of 743

To minimize the possibility of catalytic converter dam-
age:
•Do not shut off the engine or interrupt the ignition,
when the transmission is in gear and the vehicle is in
motion.
• Do not try to start the engine by pushing or towing the
vehicle.
• Do not idle the engine with any spark plug wires
disconnected or removed, such as when diagnostic
testing, or for prolonged periods during very rough
idle or malfunctioning operating conditions.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 is hot.
Engine Coolant Checks
Check the engine coolant (antifreeze) protection every 12
months (before the onset of freezing weather, where
applicable). If the engine coolant (antifreeze) is dirty or
rusty in appearance, the system should be drained,
flushed and refilled with fresh coolant. Check the front of
the A/C condenser (if equipped) or radiator for any
accumulation of bugs, leaves, etc. If dirty, clean by gently
654 MAINTAINING YOUR VEHICLE
Page 682 of 743
Cavity Car-tridgeFuse Micro
Fuse Description
F46 10 Amp
Red Tire Pressure Moni-
tor
F47 10 Amp
Red Snow Plow (Right)
– If Equipped
F49 10 Amp
Red Instrument Panel
Cluster
F50 20 Amp
Yellow Air Suspension
Control Module – If Equipped
F51 10 Amp
Red Ignition Node
Module / Keyless Ignition
F52 5 Amp
Ta n Battery SensorCavity Car-
tridgeFuse Micro
Fuse Description
F53 20 Amp
Yellow Trailer Tow – Left
Turn/Stop Lights
F54 20 Amp
Yellow Adjustable Pedals
F55 20 Amp
Yellow E38 Radio – If
Equipped
F56 15 Amp
Blue Additional Diesel
Content – IfEquipped
F57 20 Amp
Yellow Transmission
680 MAINTAINING YOUR VEHICLE
Page 683 of 743
Cavity Car-tridgeFuse Micro
Fuse Description
F58 20 Amp
Yellow (Gas
Engine) /25
Amp
Natural (Diesel
Engine) Engine Cooling
Pump
F60 15 Amp
Blue Underhood Lamp
F61 20 Amp
Yellow Power Take-off
Unit – If Equipped
F62 10 Amp
Red Air Conditioning
ClutchCavity Car- tridgeFuse Micro
Fuse Description
F63 20 Amp
Yellow IgnitionCoils (Gas),
Urea Heater (Die- sel)
F64 25 Amp
Natural Fuel Injectors /
Powertrain
F65 10 Amp
Red USB interface
F66 10 Amp
Red Sunroof / Passen-
ger Window
Switches / Rain Sensor
F67 10 Amp
Red CD / DVD /
Bluetooth Hands- free Module – If Equipped
7
MAINTAINING YOUR VEHICLE 681
Page 710 of 743
Mileage or time passed
(whichever comes first)
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
110,000
120,000
130,000
140,000
150,000
Or Years: 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Or Kilometers:
32,000
48,000
64,000
80,000
96,000
112,000
128,000
144,000
160,000
176,000
192,000
208,000
224,000
240,000
Replace spark plugs
(5.7L engine).** XX X X X
Replace the ignition cables
(4.7L Engine). X
Flush and replace the engine
coolant at 10 years or 150,000
miles (240,000 km) whichever
comes first. XX
Change automatic transmission
fluid and filter(s), if using your
vehicle for police, taxi, fleet, or
frequent trailer towing. X
708 MAINTENANCE SCHEDULES
Page 730 of 743

Gear Ranges............................ .365
Gear Select Lever Override ..................624
General Information ........................20
Glass Cleaning .......................... .673
Grocery Bag Retainer ...................... .221
Gross Axle Weight Rating ...................540
Gross Vehicle Weight Rating ..................539
Guide, Body Builders ........................6
GVWR ................................ .537
Hazard Driving Through Flowing, Rising, or Shallow Stand-
ing Water ............................ .443
Hazard Warning Flasher ....................577
Headlights ............................. .687
Automatic ........................... .158
Cleaning ............................ .672
High Beam ........................... .168
High Beam/Low Beam Select Switch .........168Passing
............................. .168
Switch .............................. .158
Head Restraints ......................... .149
Heated Mirrors .......................... .133
Heater ................................ .314
Heater, Engine Block ...................... .351
High Beam/Low Beam Select (Dimmer) Switch . . . .168
Hill Descent Control ...................... .479
Hill Descent Control Indicator ................479
Hitches Trailer Towing ........................ .544
Hoisting ............................... .617
Hood Release ........................... .156
Hub Caps .............................. .595
Ignition .................................16
Key..................................12
Ignition Key Removal .......................16
Illuminated Entry ..........................22
728 INDEX