brake fluid JEEP WRANGLER 2009 Owners Manual

Airbag Warning Light
The light should come on and remain on for six to eight
seconds as a bulb check when the ignition switch is first
turned ON. If the light is not lit during starting, see your
authorized dealer. If the light stays on, flickers, or comes
on while driving, have the system checked by an autho-
rized dealer.
Defroster
Check operation by selecting the defrost mode and place
the blower control on high speed. You should be able to
feel the air directed against the windshield. See your
authorized dealer for service if your defroster is
inoperable.
Periodic Safety Checks You Should Make Outside
the Vehicle
Tires
Examine tires for excessive tread wear and uneven wear
patterns. Check for stones, nails, glass, or other objectslodged in the tread. Inspect the tread and sidewall for
cuts and cracks. Check the wheel nuts for tightness.
Check the tires (including spare) for proper pressure.
Lights
Have someone observe the operation of exterior lights
while you work the controls. Check turn signal and high
beam indicator lights on the instrument panel.
Door Latches
Check for positive closing, latching, and locking.
Fluid Leaks
Check area under vehicle after overnight parking for fuel,
engine coolant, oil, or other fluid leaks. Also, if gasoline
fumes are detected or if fuel, power steering fluid, or
brake fluid leaks are suspected, the cause should be
located and corrected immediately.
76 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

11. Brake Warning LightThis light monitors various brake functions,
including brake fluid level and parking brake
application. If the brake light turns on, it may
indicate that the parking brake is applied, that
the brake fluid level is low, or that there is a problem with
the anti-lock brake system reservoir.
If the light remains on when the parking brake has been
disengaged, and the fluid level is at the full mark on the
master cylinder reservoir, it indicates a possible brake
hydraulic system malfunction or that a problem with the
Brake Booster has been detected by the Anti-Lock Brake
System (ABS) / Electronic Stability Program (ESP) sys-
tem. In this case, the light will remain on until the
condition has been corrected. If the problem is related to
the brake booster, the ABS pump will run when applying
the brake and a brake pedal pulsation may be felt during
each stop. The dual brake system provides a reserve braking capac-
ity in the event of a failure to a portion of the hydraulic
system. A leak in either half of the dual brake system is
indicated by the Brake Warning Light, which will turn on
when the brake fluid level in the master cylinder has
dropped below a specified level.
The light will remain on until the cause is corrected.
NOTE:
The light may flash momentarily during sharp
cornering maneuvers, which change fluid level condi-
tions. The vehicle should have service performed, and
the brake fluid level checked.
If brake failure is indicated, immediate repair is neces-
sary.

▫Automatic Transmission With Overdrive .... 287

Four–Wheel Drive Operation (Command-Trac I
Or Rock-Trac) — If Equipped
............. 291
▫ Operating Instructions/Precautions ....... 291
▫ Shift Positions ...................... 293
▫ Shifting Procedure ................... 294
 Trac-Lok Rear Axle — If Equipped ........ 295
 Axle Lock (Tru–Lok) — Rubicon Models .... 296
 Rear Axle Lock (Four-Wheel Drive
Non-Rubicon Models) — If Equipped ........ 297
 Electronic Sway Bar Disconnect —
If Equipped .......................... 298
 On-Road Driving Tips .................. 300
 Off-Road Driving Tips .................. 300 ▫
Side Step Removal — If Equipped ........ 300
▫ The Basics Of Off-Road Driving .......... 301
▫ When To Use 4L (Low) Range ........... 302
▫ Simultaneous Brake And
Throttle Operation ................... 302
▫ Driving In Snow, Mud And Sand ......... 303
▫ Crossing Obstacles
(Rocks And Other High Points) .......... 304
▫ Hill Climbing ....................... 307
▫ Driving Through Water ................ 309
▫ After Driving Off-Road ................ 312
 Power Steering ....................... 313
▫ Power Steering Fluid Check ............. 314
 Parking Brake ........................ 315
274 STARTING AND OPERATING

▫Brake System ....................... 421
▫ Automatic Transmission — If Equipped .... 423
▫ Hydraulic Clutch Fluid — Manual
Transmission ....................... 426
▫ Manual Transmission — If Equipped ...... 426
▫ Transfer Case — If Equipped ............ 426
▫ Front/Rear Axle Fluid ................. 427
▫ Maintenance After Off-Road Driving ...... 428
▫ Appearance Care And Protection From
Corrosion .......................... 428
 Fuses .............................. 436
▫ Totally Integrated Power Module ......... 436
 Vehicle Storage ....................... 442
 Replacement Bulbs .................... 443 
Bulb Replacement ..................... 444
▫ Headlamp ......................... 444
▫ Front Park/Turn Signal ................ 445
▫ Front Side Marker .................... 445
▫ Front Fog Lamp ..................... 445
▫ Rear Tail, Stop, Turn Signal, And Backup
Lamp ............................. 446
▫ Center High-Mounted Stop Lamp
(CHMSL) .......................... 446
 Fluid Capacities ...................... 447
 Fluids, Lubricants And Genuine Parts ....... 448
▫ Engine ............................ 448
▫ Chassis ........................... 449
400 MAINTAINING YOUR VEHICLE

Power Disc Brakes
Disc brakes do not require adjustment; however, several
hard stops during the break-in period are recommended
to seat the linings and wear off any foreign material.
Brake Master Cylinder
The fluid level in the master cylinders should be checked
whenever the vehicle is serviced. If necessary, add fluid
to bring level to the full level mark on the side of the
reservoir of the brake master cylinder. With disc brakes,
fluid level can be expected to fall as the brake pads wear.
If the brake fluid level is abnormally low, check system
for leaks.
Refer to “Fluids, Lubricants, and Genuine Parts” in this
section for the correct fluid type.

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. Using a transmission fluid other than the
manufacturer’s recommended fluid will result in
more frequent fluid and filter changes. Refer to
“Fluids, Lubricants, and Genuine Parts” in this sec-
tion for the correct fluid type.
Fluid Level Check — 42RLE
Check the fluid level while the transmission is at normal
operating temperature 180° F (82° C). This occurs after at
least 15 miles (25 km) of driving. At normal operating
temperature, the fluid cannot be held comfortably be-
tween the fingertips.
If the transmission overheats, a “HOTOIL” message will
be displayed in the odometer and a chime will sound.To properly check the automatic transmission fluid level,
the following procedure must be used:
1. Operate the engine at idle speed and normal operating
temperature.
2. The vehicle must be on level ground.
3. Fully apply the parking brake.
4. Place the shift lever momentarily into each gear posi-
tion ending with the shift lever in PARK.
5. Remove the dipstick, wipe it clean and reinsert it until
seated.
6. Remove the dipstick again and note the fluid level on
both sides. The fluid level should be between the HOT
(upper) reference holes on the dipstick at normal operat-
ing temperature. Verify that a solid coating of oil is seen
on both sides of the dipstick. If the fluid is low, add as
required into the dipstick tube.
Do not overfill.After
424 MAINTAINING YOUR VEHICLE

Selection of Lubricant
Use only manufacturer’s recommended fluid. Refer to
“Fluids, Lubricants, and Genuine Parts” in this section
for the correct fluid type.
Maintenance After Off-Road Driving
After extended operation in mud, sand or water, or
similar dirty conditions, have your brake drums, brake
linings, and axle joints inspected and cleaned as soon as
possible. This will prevent any abrasive material from
causing excessive wear or unpredictable braking action.
Following off-road usage, completely inspect the under-
body of your vehicle. Check the tires, body structure,
steering, suspension and exhaust system for damage.
Check the threaded fasteners for looseness, particularly
on the chassis, drivetrain components, steering and sus-
pension. Retighten, if required, to torque values specified
in the Service Manual. Also check for accumulations of
vegetation or brush that could become a fire hazard, orconceal damage to fuel lines, brake hoses, axle pinion
seals, and propeller shafts. Check the air conditioning
drain tube on the lower dash wall in the engine compart-
ment for mud or debris, and clean as required. A plugged
tube will adversely affect air conditioning performance.

ABS (Anti-Lock Brake System)............203,316
Adding Fuel ........................... 361
Air Cleaner, Engine (Engine Air Cleaner Filter) . . . 409
Air Conditioner Maintenance ............... 410
Air Conditioning ..................... 266,269
Air Conditioning Controls ................. 269
Air Conditioning, Operating Tips ............ 270
Air Conditioning Refrigerant ................ 411
Air Conditioning System .................. 269
Air Filter .............................. 409
Air Pressure, Tires ....................... 343
Airbag ................................ 48
Airbag Deployment ....................... 56
Airbag Light ....................... 58,76,204
Airbag Maintenance ....................... 58
Airbag, Side ............................ 55
Alarm Light ........................... 204
Alarm (Security Alarm) .................... 17
Alterations/Modifications, Vehicle ............. 8Antenna, Satellite Radio
................... 259
Antifreeze (Engine Coolant) ................ 447
Anti-Lock Brake System (ABS) ............316,319
Anti-Lock Warning Light .................. 203
Appearance Care ........................ 428
Arming Theft System (Security Alarm) ......... 18
Auto Down Power Windows ................ 36
Automatic Transmission ................... 423
Fluid and Filter Changes ................. 423
Fluid Level Check ..................... 424
Fluid Type ........................... 423
Gear Ranges ......................... 288
Shifting ............................. 287
Special Additives ...................... 425
Torque Converter ...................... 291
Auxiliary Electrical Outlet (Power Outlet) ...... 106
Auxiliary Power Outlet ................... 106
Axle Lock .......................... 296,297
482 INDEX