2015 JEEP GRAND CHEROKEE brake light

Electronic Stability Control (ESC)
This system enhances directional control and stability of
the vehicle under various driving conditions. ESC cor-
rects for oversteering or understeering of the vehicle by
applying the brake of the appropriate wheel to assist in
counteracting the oversteer or understeer condition. En-
gine power may also be reduced to help the vehicle
maintain the desired path.
ESC uses sensors in the vehicle to determine the vehicle
path intended by the driver and compares it to the actual
path of the vehicle. When the actual path does not match
the intended path, ESC applies the brake of the appro-
priate wheel to assist in counteracting the oversteer or
understeer condition.
•Oversteer - when the vehicle is turning more than
appropriate for the steering wheel position.
•Understeer - when the vehicle is turning less than
appropriate for the steering wheel position.The “ESC Activation/Malfunction Indicator Light” lo-
cated in the instrument cluster will start to flash as soon
as the tires lose traction and the ESC system becomes
active. The “ESC Activation/Malfunction Indicator
Light” also flashes when the TCS is active. If the “ESC
Activation/Malfunction Indicator Light” begins to flash
during acceleration, ease up on the accelerator and apply
as little throttle as possible. Be sure to adapt your speed
and driving to the prevailing road conditions.
WARNING!
The Electronic Stability Control (ESC) cannot pre-
vent the natural laws of physics from acting on the
vehicle, nor can it increase the traction afforded by
prevailing road conditions. ESC cannot prevent col-
lisions, including those resulting from excessive
speed in turns, driving on very slippery surfaces, or
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WARNING!(Continued)
stability.ESC Offmode is intended for off-highway
or off-road use only.
NOTE:When the ESC is switched OFF, a feature of the
system remains active. This feature controls wheel spin
across an axle quite similarly to a limited slip differential.
If one wheel on an axle is spinning faster than the other,
the system will apply the brake of the spinning wheel
and allow more engine torque to be applied to the wheel
that is not spinning. To improve the vehicle’s traction
when driving with tire chains, or when starting off in
deep snow, sand, or gravel, it may be desirable to switch
to the “Partial Off” mode by momentarily pressing the
“ESC Off” switch.
WARNING!
With the ESC switched OFF, the enhanced vehicle
stability offered by ESC is unavailable. In an emer-
gency evasive maneuver, the ESC system will not
engage to assist in maintaining stability. The “Full
Off” ESC mode is intended for off-highway or off-
road only.
ESC Activation/Malfunction Indicator Light And
ESC OFF Indicator Light
The “ESC Activation/Malfunction Indicator
Light” in the instrument cluster will come on
when the ignition switch is cycled to the ON/
RUN position. It should go out with the engine
running. If the “ESC Activation/Malfunction Indicator
Light” comes on continuously with the engine running, a
malfunction has been detected in the ESC system. If this
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Trailer Sway Control (TSC)
TSC uses sensors in the vehicle to recognize an exces-
sively swaying trailer and will take the appropriate
actions to attempt to stop the sway. The system may
reduce engine power and apply the brake of the appro-
priate wheel(s) to counteract the sway of the trailer. TSC
will become active automatically once an excessively
swaying trailer is recognized. Note that TSC cannot stop
all trailers from swaying. Always use caution when
towing a trailer and follow the trailer tongue weight
recommendations. Refer to “Trailer Towing” in this sec-
tion for further information. When TSC is functioning,the “ESC Activation/Malfunction Indicator Light” will
flash, the engine power may be reduced and you may
feel the brakes being applied to individual wheels to
attempt to stop the trailer from swaying. TSC is disabled
when the ESC system is in the “Partial Off” mode.
WARNING!
If TSC activates while driving, slow the vehicle
down, stop at the nearest safe location, and adjust the
trailer load to eliminate trailer sway.5
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WARNING!
Riding the brakes can lead to brake failure and
possibly a collision. Driving with your foot resting or
riding on the brake pedal can result in abnormally
high brake temperatures, excessive lining wear, and
possible brake damage. You would not have your full
braking capacity in an emergency.
Fluid Level Check — Brake Master Cylinder
The fluid level of the master cylinder should be checked
whenever the vehicle is serviced, or immediately if the
brake system warning light is on. If necessary, add fluid
to bring level to the full mark on the side of the reservoir
of the brake master cylinder. Be sure to clean the top of
the master cylinder area before removing cap. With disc
brakes, fluid level can be expected to fall as the brakepads wear. Brake fluid level should be checked when
pads are replaced. If the brake fluid is abnormally low,
check system for leaks.
Refer to “Fluids, Lubricants, and Genuine Parts” in
“Maintaining Your Vehicle” for further information.
WARNING!
•Use only manufacturer’s recommended brake
fluid. Refer to “Fluids, Lubricants, and Genuine
Parts” in “Maintaining Your Vehicle” for further
information. Using the wrong type of brake fluid
can severely damage your brake system and/or
impair its performance. The proper type of brake
fluid for your vehicle is also identified on the
original factory installed hydraulic master cylinder
reservoir.
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MAINTAINING YOUR VEHICLE 563

Cavity Cartridge Fuse Micro Fuse Description
F07 40 Amp Green – Starter Solenoid
F08 20 Amp Blue – Emission Sensors (Diesel engine only)
F09 30 Amp Pink – Diesel Fuel Heater (Diesel engine only)
F10 40 Amp Green – Body Controller / Exterior Lighting #2
F11 30 Amp Pink – Trailer Tow Electric Brake - If Equipped
F12 40 Amp Green – Body Controller #3 / Power Locks
F13 40 Amp Green – Blower Motor Front
F14 40 Amp Green – Body Controller #4 / Interior Lights #2
F17 30 Amp Pink – Headlamp Washer- If Equipped
F19 20 Amp Blue – Headrest Solenoid- If Equipped
F20 30 Amp Pink – Passenger Door Module
F22 20 Amp Blue – Engine Control Module
F23 30 Amp Pink – Interior Lights #1
F24 30 Amp Pink – Driver Door Module
F25 30 Amp Pink – Front Wipers
576 MAINTAINING YOUR VEHICLE

Cavity Cartridge Fuse Micro Fuse Description
F26 30 Amp Pink – Anti-lock Brakes/Stability Control Module/
Valves
F28 20 Amp Blue – Trailer Tow Backup Lights - If Equipped
F29 20 Amp Blue – Trailer Tow Parking Lights - If Equipped
F30 30 Amp Pink – Trailer Tow Receptacle - If Equipped
F32 30 Amp Pink – Drive Train Control Module
F34 30 Amp Pink – Slip Differential Control
F35 30 Amp Pink – Sunroof - If Equipped
F36 30 Amp Pink – Rear Defroster
F37 25 Amp Clear – Rear Blower Motor - If Equipped
F38 30 Amp Pink – Power Inverter 115V AC - If Equipped
F39 30 Amp Pink – Power Liftgate - If Equipped
F40 – 10 Amp Red Daytime Running Lights/Headlamp Level-
ing
F42 – 20 Amp Yellow Horn
7
MAINTAINING YOUR VEHICLE 577

Cavity Cartridge Fuse Micro Fuse Description
F61 – 10 Amp Red Transmission Control Module/PM Sensor
(Diesel engine only)
F62 – 10 Amp Red Air Conditioning Clutch
F63 – 20 Amp Yellow Ignition Coils (Gas), Urea Heater (Diesel)
F64 – 25 Amp Clear Fuel Injectors / Powertrain
F66 – 10 Amp Red Sunroof / Passenger Window Switches /
Rain Sensor
F67 – 15 Amp Blue CD / DVD / Bluetooth Hands-free Module -
If Equipped
F68 – 20 Amp Yellow Rear Wiper Motor
F69 – 15 Amp Blue Spotlight Feed - If Equipped
F70 – 20 Amp Yellow Fuel Pump Motor
F71 – 30 Amp Green Audio Amplifier
F73 – 15 Amp Blue HID Headlamp RH - If Equipped
F74 – 20 Amp Yellow Brake Vacuum Pump - If Equipped
7
MAINTAINING YOUR VEHICLE 579

Cavity Cartridge Fuse Micro Fuse Description
F76 – 10 Amp Red Anti-lock Brakes/Electronic Stability Control
F77 – 10 Amp Red Drivetrain Control Module/Front Axle Dis-
connect Module
F78 – 10 Amp Red Engine Control Module / Electric Power
Steering - If Equipped
F80 – 10 Amp Red Universal Garage Door Opener / Compass /
Anti-Intrusion Module
F81 – 20 Amp Yellow Trailer Tow Right Turn/Stop Lights
F82 – 10 Amp Red Steering Column Control Module/ Cruise
Control
F83 – 10 Amp Red Fuel Door
F84 – 15 Amp Blue Switch Bank/Instrument Cluster
F85 – 10 Amp Red Airbag Module
F86 – 10 Amp Red Airbag Module
580 MAINTAINING YOUR VEHICLE