2015 JEEP WRANGLER automatic transmission

ONBOARD DIAGNOSTIC SYSTEM — OBD II
Your vehicle is equipped with a sophisticated onboard
diagnostic system called OBD II. This system monitors
the performance of the emissions, engine, and automatic
transmission control systems. When these systems are
operating properly, your vehicle will provide excellent
performance and fuel economy, as well as engine emis-
sions well within current government regulations.
If any of these systems require service, the OBD II system
will turn on the “Malfunction Indicator Light” (MIL). It
will also store diagnostic codes and other information to
assist your service technician in making repairs. Al-
though your vehicle will usually be drivable and not
need towing, see your authorized dealer for service as
soon as possible.
CAUTION!
•Prolonged driving with the MIL on could cause
further damage to the emission control system. It
could also affect fuel economy and driveability.
The vehicle must be serviced before any emissions
tests can be performed.
•If the MIL is flashing while the engine is running,
severe catalytic converter damage and power loss
will soon occur. Immediate service is required.
Loose Fuel Filler Cap Message
After fuel is added, the vehicle diagnostic system can
determine if the fuel filler cap is possibly loose, improp-
erly installed, or damaged. A “gASCAP” message will be
displayed in the odometer. Tighten the gas cap until a
#clicking#sound is heard. This is an indication that the
gas cap is properly tightened. Press the odometer reset
button to turn the message off. If the problem persists,
584 MAINTAINING YOUR VEHICLE

WARNING!(Continued)
•To avoid contamination from foreign matter or
moisture, use only new brake fluid or fluid that has
been in a tightly closed container. Keep the master
cylinder reservoir cap secured at all times. Brake
fluid in a open container absorbs moisture from the
air resulting in a lower boiling point. This may
cause it to boil unexpectedly during hard or pro-
longed braking, resulting in sudden brake failure.
This could result in a collision.
•Overfilling the brake fluid reservoir can result in
spilling brake fluid on hot engine parts, causing
the brake fluid to catch fire. Brake fluid can also
damage painted and vinyl surfaces, care should be
taken to avoid its contact with these surfaces.
(Continued)
WARNING!(Continued)
•Do not allow petroleum based fluid to contaminate
the brake fluid. Brake seal components could be
damaged, causing partial or complete brake failure.
This could result in a collision.
Automatic Transmission — If Equipped
Selection Of Lubricant
It is important to use the proper transmission fluid to
ensure optimum transmission performance and life. Use
only the manufacturer’s specified transmission fluid.
Refer to “Fluids, Lubricants, and Genuine Parts” in this
section for fluid specifications. It is important to maintain
the transmission fluid at the correct level using the
recommended fluid.
7
MAINTAINING YOUR VEHICLE 619

NOTE:No chemical flushes should be used in any
transmission; only the approved lubricant should be
used.
CAUTION!
Using a transmission fluid other than the manufac-
turer’s recommended fluid may cause deterioration
in transmission shift quality and/or torque converter
shudder, and will require more frequent fluid and
filter changes. Refer to “Fluids, Lubricants, and
Genuine Parts” in this section for fluid specifica-
tions.
Special Additives
The manufacturer strongly recommends against using
any special additives in the transmission.
Automatic Transmission Fluid (ATF) is an engineered
product and its performance may be impaired by supple-
mental additives. Therefore, do not add any fluid addi-
tives to the transmission. The only exception to this
policy is the use of special dyes for diagnosing fluid
leaks. Avoid using transmission sealers as they may
adversely affect seals.
CAUTION!
Do not use chemical flushes in your transmission as
the chemicals can damage your transmission compo-
nents. Such damage is not covered by the New
Vehicle Limited Warranty.
Fluid Level Check
It is best to check the fluid level when the transmission
is at normal operating temperature (approximately
180° F/82° C). This occurs after at least 15 miles (25 km)
620 MAINTAINING YOUR VEHICLE

REPLACEMENT BULBS
Interior Bulbs
Bulb Number
Automatic Transmission Indicator Lamp658
Heater Control Lamps (2)194
Rocker Switch Indicator Lamp (Rear Window Defog-
ger, and Rear Wash/Wipe)
**
Soundbar Dome Lamp912
** Bulbs only available from authorized dealer.
Exterior Bulbs
Bulb Number
Headlamps (2)H13
Front Park/Turn Signal Lamps (2)3157NA
Front Side Marker Lamps (2)168
Fog LampsPSX24W
7
MAINTAINING YOUR VEHICLE 641

Chassis
ComponentFluid, Lubricant, or Genuine Part
Automatic Transmission – If EquippedUse only ATF+4® Automatic Transmission Fluid. Fail-
ure to use ATF+4® fluid may affect the function or
performance of your transmission. We recommend
MOPAR® ATF+4® fluid.
Manual Transmission – If EquippedWe recommend you use MOPAR® Manual Transmis-
sion Lubricant meeting the requirements of Chrysler
Material Standard MS-9224.
Transfer CaseWe recommend you use MOPAR® ATF+4® Automatic
Transmission Fluid.
Axle Differential (Front)We recommend you use MOPAR® Gear & Axle Lubri-
cant (SAE 80W-90) (API GL-5).
7
MAINTAINING YOUR VEHICLE 649

ComponentFluid, Lubricant, or Genuine Part
Axle Differential (Rear)226 RBI (Model 44)– We recommend you use MOPAR®
Gear & Axle Lubricant (SAE 80W-90) (API GL-5) or
equivalent. For trailer towing, use MOPAR® Synthetic
Gear & Axle Lubricant (SAE 75W-140). Models
equipped with Trac-Lok™ require an additive.
Brake Master CylinderWe recommend you use MOPAR® DOT 3 Brake Fluid,
SAE J1703. If DOT 3, SAE J1703 brake fluid is not
available, then DOT 4 is acceptable.
Power Steering ReservoirWe recommend you use MOPAR® Power Steering Fluid
+4, MOPAR® ATF+4® Automatic Transmission Fluid.
650 MAINTAINING YOUR VEHICLE

Once A Month Or Before A Long Trip:
•Check engine oil level
•Check windshield washer fluid level
•Check the tire inflation pressures and look for unusual
wear or damage
•Check the fluid levels of the coolant reservoir, brake
master cylinder, power steering and automatic trans-
mission, and fill as needed
•Check function of all interior and exterior lights
Required Maintenance Intervals.
Refer to the maintenance schedules on the following
page for the required maintenance intervals.
At Every Oil Change Interval As Indicated By Oil
Change Indicator System:
•Change oil and filter
At Every Oil Change Interval As Indicated By Oil
Change Indicator System:
•Rotate the tires.Rotate at the first sign of irregu-
lar wear, even if it occurs before the oil indicator
system turns on.
•Inspect battery and clean and tighten terminals as
required
•Inspect automatic transmission fluid if equipped
with dipstick
•Inspect brake pads, shoes, rotors, drums, hoses
and park brake
•Inspect engine cooling system protection and hoses
•Inspect exhaust system
•Inspect engine air cleaner if using in dusty or
off-road conditions
•Inspect all door latches for presence of grease,
reapply if necessary.
8
MAINTENANCE
SCHEDULES
MAINTENANCE SCHEDULES 653

Mileage or time passed
(whichever comes first)
20,00030,00040,00050,00060,00070,00080,00090,000100,000110,000120,000130,000140,000150,000
Or Years: 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Or Kilometers:
32,00048,00064,00080,00096,000112,000128,000144,000160,000176,000192,000208,000224,000240,000
Flush and replace the enginecoolant at 10 years or 150,000miles (240,000 km) whichevercomes first.
XX
Change automatic transmissionfluid and filter if using your ve-hicle for any of the following: po-lice, taxi, fleet, or frequent trailertowing.
X
Change the automatic transmis-sion fluid and filter.X
8
MAINTENANCE
SCHEDULES
656 MAINTENANCE SCHEDULES