Red Warning Lights - Jeep Grand Cherokee SRT 2018 Owner's Manual

refer to the information in this chapter in the
event of a failure indication. All active telltales
will display first if applicable. The system check
menu may appear different based upon equip-
ment options and current vehicle status. Some
telltales are optional and may not appear.

Red Warning Lights

— Air Bag Warning Light
This light indicates a fault with the air bag, and
will turn on for four to eight seconds as a bulb
check when the ignition is placed in the ON/
RUN or ACC/ON/RUN position. This light will
illuminate with a single chime when a fault with
the air bag has been detected, it will stay on until
the fault is cleared. If the light is either not on
during startup, stays on, or turns on while driv-
ing, have the system inspected at an authorized
dealer as soon as possible.
— Brake Warning Light
This light monitors various brake functions, in-
cluding brake fluid level and parking brake ap-
plication. 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.
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 Con-
trol (ESC) system. In this case, the light will
remain on until the condition has been cor-
rected. 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 brak-
ing capacity 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
conditions. The vehicle should have service
performed, and the brake fluid level checked.
If brake failure is indicated, immediate repair is
necessary.
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 a collision. Have the
vehicle checked immediately.
Vehicles equipped with the Anti-Lock Brake Sys-
tem (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/RUN position. The light
should illuminate for approximately four sec-
onds. 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/RUN position.
NOTE:
This light shows only that the parking brake is
applied. It does not show the degree of brake
application.
— Battery Charge Warning Light
This light illuminates when the battery is not
charging properly. If it stays on while the engine
is running, there may be a malfunction with the
charging system. Contact your authorized
dealer as soon as possible.
This indicates a possible problem with the elec-
trical system or a related component.
— Door Open Warning Light
This indicator will illuminate when a door is
ajar/open and not fully closed.
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