2010 JEEP GRAND CHEROKEE ABS

Vehicle Security Light (located in the instrument cluster)
will flash rapidly for about 16 seconds to signal that the
Vehicle Security Alarm is arming. During this 16 second
arming period, opening any door or the liftgate will
cancel the arming. If the Vehicle Security Alarm success-
fully arms, the Vehicle Security Light will flash at a
slower rate to indicate the alarm is set.
To Disarm the System
To disarm the Vehicle Security Alarm, you will need to
press the UNLOCK button on the RKE transmitter or
turn the ignition key to the ON position. If something has
triggered the Vehicle Security Alarm in your absence, the
horn will sound three times when you unlock the doors.
Check the vehicle for tampering.
The Vehicle Security Alarm is designed to protect your
vehicle; however, you can create conditions where the
Vehicle Security Alarm will arm unexpectedly. If you
remain in the vehicle and lock the doors with the RKEtransmitter, once the Vehicle Security Alarm is armed
(after 16 seconds), when you pull the door handle to exit,
the alarm will sound. If this occurs, press the UNLOCK
button on the RKE transmitter to disarm the Vehicle
Security Alarm. You may also accidentally disarm the
Vehicle Security Alarm by unlocking the driver’s door
with the key and then locking it. The door will be locked
but the Vehicle Security Alarm will not arm.ILLUMINATED ENTRY
The interior lights come on when you open any door or
use the Remote Keyless Entry (RKE) transmitter to un-
lock any door. They will remain on for approximately
30 seconds after all doors are closed then fade to off.
The lights also will fade to off if you turn on the ignition
after you close all the doors.
18 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

Once the liftgate flipper glass has been opened, connec-
tion to the rear window wiper is interrupted, preventing
activation of the rear wiper blade while the flipper glass
is open.
NOTE:If a malfunction to the liftgate latch should
occur, an emergency liftgate latch release can be used to
open the liftgate. The emergency liftgate latch release can
be accessed through a snap-in cover located on the
liftgate trim panel.
WARNING!
Driving with the flipper glass open can allow poi-
sonous exhaust gases into your vehicle. You and your
passengers could be injured by these fumes. Keep
the flipper glass closed when you are operating the
vehicle.
OCCUPANT RESTRAINTS
Some of the most important safety features in your
vehicle are the restraint systems:
•Three-point lap and shoulder belts for the driver and
all passengers
•Advanced Front Airbags for driver and front passen-
ger
•Supplemental Side Airbag Inflatable Curtains (SABIC)
for the driver and passengers seated next to a window
— if equipped
•Supplemental Side Seat Airbags — if equipped
•An energy-absorbing steering column and steering
wheel
•Knee bolsters/blockers for front seat occupants
34 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

INSTRUMENT CLUSTER DESCRIPTIONS
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.
156 UNDERSTANDING YOUR INSTRUMENT PANEL

WARNING!
Driving a vehicle with the red brake light on is
dangerous. Part of the brake system may have failed.
It will take longer to stop the vehicle. You could have
an accident. Have the vehicle checked immediately.
Vehicles equipped with the Anti-Lock Brake System
(ABS), are also equipped with Electronic Brake Force
Distribution (EBD). In the event of an EBD failure, the
Brake Warning Light will turn on along with the ABS
Light. Immediate repair to the ABS system is required.
Operation of the Brake Warning Light can be checked by
turning the ignition switch from the OFF position to the
ON position. The light should illuminate for approxi-
mately two seconds. The light should then turn off unless
the parking brake is applied or a brake fault is detected.
If the light does not illuminate, have the light inspected
by an authorized dealer. The light also will turn on when the parking brake is
applied with the ignition switch in the ON position.
NOTE:
This light shows only that the parking brake is
applied. It does not show the degree of brake application.
3. Turn Signal Indicators The arrow will flash with the exterior turn signal
when the turn signal lever is operated.
If the vehicle electronics sense that the vehicle has
traveled about 1 mile (1.6 km) with the turn signals on, a
chime will sound to alert you to turn the signals off. If
either indicator flashes at a rapid rate, check for a
defective outside light bulb.
4. High Beam Indicator Indicates that headlights are on high beam.
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UNDERSTANDING YOUR INSTRUMENT PANEL 157

6. Airbag Warning LightThis light turns on and remains on for six to
eight seconds as a bulb check when the ignition
switch is first turned ON. If the light is not on
during starting, stays on, or turns on while
driving, have the system inspected by an authorized
dealer as soon as possible. Refer to “Occupant Restraints”
in “Things To Know Before Starting Your Vehicle” for
further information.
7. Anti-Lock Brake (ABS) Warning Light This light monitors the Anti-Lock Brake System.
The light will turn on when the ignition switch is
turned to the ON position and may stay on for as long as
four seconds.
If the ABS Warning Light remains on or turns on while
driving, it indicates that the Anti-Lock portion of the
brake system is not functioning and that service is required. However, the conventional brake system will
continue to operate normally if the Brake Warning Light
is not on.
If the ABS Warning Light is on, the brake system should
be serviced as soon as possible to restore the benefits of
anti-lock brakes. If the ABS Warning Light does not turn
on when the ignition switch is turned to the ON position,
have the light inspected by an authorized dealer.
8. Tachometer
Indicates the engine speed in revolutions per minute
(RPM).
9. Vehicle Security Light
This light will flash rapidly for approximately
15 seconds when the vehicle theft alarm is
arming. The light will flash at a slower speed
continuously after the alarm is set. The security
light will also come on for about three seconds when the
ignition is first turned on.
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UNDERSTANDING YOUR INSTRUMENT PANEL 159

▫Power Steering Fluid Check ............. 249
 Parking Brake ........................ 250
 Anti-Lock Brake System ................. 252
 Electronic Brake Control System ........... 255
▫ Anti-Lock Brake System (ABS) ........... 255
▫ Traction Control System (TCS) ........... 255
▫ Brake Assist System (BAS) .............. 256
▫ Electronic Roll Mitigation (ERM) ......... 257
▫ Electronic Stability Program (ESP) ........ 257
▫ Trailer Sway Control (TSC) ............. 260
▫ ESP/BAS Warning Light And ESP/TCS
Indicator Light ...................... 260
 Tire Safety Information ................. 262 ▫
Tire Markings ....................... 262
▫ Tire Identification Number (TIN) ......... 266
▫ Tire Terminology And Definitions ......... 267
▫ Tire Loading And Tire Pressure .......... 268
 Tires — General Information ............. 272
▫ Run Flat Tires ....................... 272
▫ Tire Pressure ....................... 272
▫ Tire Inflation Pressures ................ 274
▫ Tire Pressures For High Speed Operation . . . 275
▫ Radial-Ply Tires ..................... 275
▫ Tire Spinning ....................... 276
▫ Tread Wear Indicators ................. 276
▫ Life Of Tire ........................ 277
236 STARTING AND OPERATING

WARNING! (Continued)
•Always fully apply the parking brake when leav-
ing your vehicle, or it may roll and cause damage
or injury. Also be certain to leave the transmission
in PARK. Failure to do so may allow the vehicle to
roll and cause damage or injury.
CAUTION!
If the “Brake Warning Light” remains on with the
parking brake released, a brake system malfunction
is indicated. Have the brake system serviced by an
authorized dealer immediately.
ANTI-LOCK BRAKE SYSTEM
The Anti-Lock Brake System (ABS) is designed to aid the
driver in maintaining vehicle control under adverse
braking conditions. The system operates with a separatecomputer to modulate hydraulic pressure to prevent
wheel lock-up and help avoid skidding on slippery
surfaces.
All vehicle wheels and tires must be the same size and
type and tires must be properly inflated to produce
accurate signals for the computer.
WARNING!
Significant over or under inflation of tires can lead to
loss of braking effectiveness.
The Anti-Lock Brake System conducts a low-speed self-
test at about 12 mph (20 km/h). If you have your foot
lightly on the brake while this test is occurring you may
feel slight pedal movement. The movement can be more
apparent on ice and snow. This is normal.
252 STARTING AND OPERATING

The Anti-Lock Brake System pump motor runs during
the self-test at 12 mph (20 km/h) and during an ABS stop.
The pump motor makes a low humming noise during
operation, which is normal.
WARNING!
•Pumping of the Anti-Lock Brakes will diminish
their effectiveness and may lead to an accident.
Pumping makes the stopping distance longer. Just
press firmly on your brake pedal when you need
to slow down or stop.
•The Anti-Lock Brake System (ABS) cannot prevent
the natural laws of physics from acting on the
vehicle, nor can it increase braking or steering
efficiency beyond that afforded by the condition
of the vehicle brakes and tires or the traction
afforded.(Continued)
WARNING! (Continued)
•The ABS cannot prevent accidents, including
those resulting from excessive speed in turns,
following another vehicle too closely, or hydro-
planing. Only a safe, attentive, and skillful driver
can prevent accidents.
•The capabilities of an ABS equipped vehicle must
never be exploited in a reckless or dangerous
manner which could jeopardize the user’s safety
or the safety of others.
CAUTION!
The Anti-Lock Brake System is subject to possible
detrimental effects of electronic interference caused
by improperly installed after-market radios or tele-
phones.
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