brake fluid JEEP COMMANDER 2010 1.G Owners Manual

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 objects
lodged 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

INSTRUMENT CLUSTER DESCRIPTION
1. Speedometer
Indicates vehicle speed.
2. 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.
160 UNDERSTANDING YOUR INSTRUMENT PANEL

•HOOD/GLASS/DOORS OPEN (with graphic)
•HOOD/GATE/DOOR OPEN (with graphic)
•HOOD/GATE/DOORS OPEN (with graphic)
•LIFTGLASS/DOOR OPEN (with graphic)
•LIFTGLASS/DOORS OPEN (with graphic)
•LIFTGLASS/HOOD OPEN (with graphic)
•WASHER FLUID LOW (with graphic)
•COOLANT LOW (with graphic)
•OIL CHANGE REQUIRED
•OIL CHANGE RESET
•CHECK GAUGES
•AUTO HIGH BEAMS ON
•AUTO HIGH BEAMS OFF
•PARK ASSIST DISABLED
•SERVICE SUSPENSION
•SERVICE PARK ASSIST SYSTEM
•TRANSMISSION OVER TEMP
•CHECK SHIFT PROCEDURE
•SERVICE 4WD SYSTEM
•4WD SYSTEM IN NEUTRAL
•LOW BRAKE FLUID LEVEL
•WARNING! LIMIT SPEED
•CHECK GASCAP
•ESP OFF
•IOD FUSE OUT
•HILL DESCENT CONTROL
4
UNDERSTANDING YOUR INSTRUMENT PANEL 173

▫Quadra-Trac II Operating Instructions/
Precautions — If Equipped ............. 256
▫ Shift Positions ...................... 257
▫ Shifting Procedures ................... 258
▫ Quadra-Drive II System — If Equipped .... 260
 On-Road Driving Tips .................. 261
 Off-Road Driving Tips .................. 261
▫ When To Use 4WD Low Range
— If Equipped ...................... 261
▫ Driving Through Water ................ 261
▫ Driving In Snow, Mud And Sand ......... 263
▫ Hill Climbing ....................... 263
▫ Traction Downhill .................... 264
▫ After Driving Off-Road ................ 264 
Power Steering ....................... 265
▫ Power Steering Fluid Check ............. 266
 Parking Brake ........................ 267
 Anti-Lock Brake System ................. 269
 Multi-Displacement System (MDS) (If
Equipped) – 5.7L Engine Only ............. 271
 Electronic Brake Control System ........... 272
▫ Anti-Lock Brake System (ABS) ........... 272
▫ Traction Control System (TCS) ........... 273
▫ Brake Assist System (BAS) .............. 273
▫ Electronic Roll Mitigation (ERM) ......... 274
▫ Electronic Stability Program (ESP) ........ 275
▫ Trailer Sway Control (TSC) ............. 280
240 STARTING AND OPERATING

the transmission may not shift into the top Overdrive
gear (normal 5th gear) until the transmission fluid and
engine coolant are warm.
•If the vehicle has not been driven in several days, the
first few seconds of operation after shifting the trans-
mission into gear may seem sluggish. This is due to the
fluid partially draining from the torque converter into
the transmission. This condition is normal and will not
cause damage to the transmission. The torque con-
verter will refill within five seconds of shifting from
PARK into any other gear position.
Rocking The Vehicle
If the vehicle becomes stuck in snow, sand, or mud, it can
often be moved by a rocking motion. Move the shift lever
between DRIVE and REVERSE, while applying slight
pressure to the accelerator.
NOTE:The Electronic Stability Program (ESP) and
Traction Control (if equipped) should be turned OFF before attempting to rock the vehicle. Refer to “Electronic
Brake Control System” in Section 3 of this manual.
The least amount of accelerator pedal pressure to main-
tain the rocking motion, without spinning the wheels or
racing the engine, is most effective. Racing the engine or
spinning the wheels, due to the frustration of not freeing
the vehicle, may lead to transmission overheating and
failure. Allow the engine to idle with the shift lever in
NEUTRAL for at least one minute after every five
rocking-motion cycles. This will minimize overheating
and reduce the risk of transmission failure during pro-
longed efforts to free a stuck vehicle.CAUTION!
When “rocking” a stuck vehicle by moving between
“First” and REVERSE, do not spin the wheels faster
than 15 mph (24 km/h), or drivetrain damage may
result.
5
STARTING AND OPERATING 255

•After extended operation in mud, sand, water, or
similar dirty conditions, have brake rotors, wheels,
brake linings, and axle yokes inspected and cleaned as
soon as possible.
WARNING!
Abrasive material in any part of the brakes may cause
excessive wear or unpredictable braking. You might
not have full braking power when you need it to
prevent an accident. If you have been operating your
vehicle in dirty conditions, get your brakes checked
and cleaned as necessary.
•If you experience unusual vibration after driving in
mud, slush or similar conditions, check the wheels for
impacted material. Impacted material can cause a
wheel imbalance and freeing the wheels of it will
correct the situation.
POWER STEERING
The standard power steering system will give you good
vehicle response and increased ease of maneuverability
in tight spaces. The system will provide mechanical
steering capability if power assist is lost.
If for some reason the power assist is interrupted, it will
still be possible to steer your vehicle. Under these condi-
tions, you will observe a substantial increase in steering
effort, especially at very low vehicle speeds and during
parking maneuvers.
NOTE:Increased noise levels at the end of the steering
wheel travel are considered normal and do not indicate
that there is a problem with the power steering system.
Upon initial start-up in cold weather, the power steering
pump may make noise for a short amount of time. This is
due to the cold, thick fluid in the steering system. This
noise should be considered normal, and it does not in any
way damage the steering system.
5
STARTING AND OPERATING 265

apparent, and/or the system is not functioning as antici-
pated. Coordinate inspection efforts through an autho-
rized dealer.
WARNING!
Fluid level should be checked on a level surface and
with the engine off to prevent injury from moving
parts and to ensure accurate fluid level reading. Do
not overfill. Use only manufacturers recommended
power steering fluid.
If necessary, add fluid to restore to the proper indicated
level. With a clean cloth, wipe any spilled fluid from all
surfaces.
PARKING BRAKE
To set the parking brake, pull the lever up as firmly as
possible. When the parking brake is applied with the
ignition ON, the “Brake Warning Light” in the instru-
ment cluster will illuminate. To release the parking brake,
pull up slightly, press the center button, then lower the
lever completely.
NOTE: The “Brake Warning Light” indicates only that
the parking brake is applied. It does not indicate the
degree of brake application.
5
STARTING AND OPERATING 267

Inflation Pressure
This is the cold tire inflation pressure for your vehicle for
all loading conditions up to full GAWR.
Curb Weight
The curb weight of a vehicle is defined as the total weight
of the vehicle with all fluids, including vehicle fuel, at full
capacity conditions, and with no occupants or cargo
loaded into the vehicle. The front and rear curb weight
values are determined by weighing your vehicle on a
commercial scale before any occupants or cargo are
added.
Loading
The actual total weight and the weight of the front and
rear of your vehicle at the ground can best be determined
by weighing it when it is loaded and ready for operation.
The entire vehicle should first be weighed on a commer-
cial scale to ensure that the GVWR has not been ex-
ceeded. The weight on the front and rear of the vehicleshould then be determined separately to be sure that the
load is properly distributed over front and rear axle.
Weighing the vehicle may show that the GAWR of either
the front or rear axles has been exceeded, but the total
load is within the specified GVWR. If so, weight must be
shifted from front to rear, or rear to front, as appropriate
until the specified weight limitations are met. Store the
heavier items down low and be sure that the weight is
distributed equally. Stow all loose items securely before
driving.
Improper weight distributions can have an adverse affect
on the way your vehicle steers and handles, and the way
the brakes operate.
322 STARTING AND OPERATING

JUMP-STARTING
If the vehicle has a discharged battery, booster cables may
be used to obtain a start from a booster battery or the
battery in another vehicle. This type of start can be
dangerous if done improperly, so follow this procedure
carefully.
WARNING!
•Remove any metal jewelry such as watch bands or
bracelets that might make an inadvertent electrical
contact. You could be seriously injured.
•Battery fluid is a corrosive acid solution that can
cause serious burns; do not allow battery fluid to
contact eyes, skin or clothing. Wear safety glasses
and protect your eyes at all times. If acid splashes
in eyes or on skin, flush contaminated area imme-
diately with large quantities of water.(Continued)
WARNING! (Continued)
•A battery generates hydrogen gas which is flam-
mable and explosive. Keep flame or spark away
from the vent holes. Do not lean over the battery
when attaching clamps or allow the clamps to
touch each other.
•Do not use a booster battery or any other booster
source that has a greater than 12 Volt system, i.e.,
do not use a 24 Volt power source.
1. Remove all metal jewelry such as watch bands or
bracelets, which might make an unintended electrical
contact.
2. Park the booster vehicle within cable reach but with-
out letting the vehicles touch. Set the parking brake on
both vehicles, place the transmission in PARK and turn
the ignition OFF.
6
WHAT TO DO IN EMERGENCIES 351

▫Cooling System ..................... 374
▫ Brake System ....................... 379
▫ Front/Rear Axle Fluid ................. 381
▫ Transfer Case ....................... 382
▫ Automatic Transmission ............... 383
▫ Maintenance After Off-Road Driving ...... 386
▫ Appearance Care And Protection From
Corrosion .......................... 387
 Fuses .............................. 392
▫ Interior Fuses ....................... 392
▫ Underhood Fuses (Power Distribution
Center) ........................... 395
▫ Underhood Fuses (Integrated Power
Module) ........................... 398 
Vehicle Storage ....................... 400
 Replacement Bulbs .................... 400
 Bulb Replacement ..................... 401
▫ Head Lamp ........................ 401
▫ Front Turn Signal .................... 402
▫ Front Fog Lamp ..................... 403
▫ Rear Tail, Stop, Turn Signal, And Backup
Lamps ............................ 404
▫ Center High Mounted Stop Lamp
(CHMSL) .......................... 406
 Fluids And Capacities .................. 407
 Fluids, Lubricants, And Genuine Parts ....... 408
▫ Engine ............................ 408
▫ Chassis ........................... 409
356 MAINTAINING YOUR VEHICLE