traction control JEEP GRAND CHEROKEE 2014 WK2 / 4.G SRT Owners Manual

•An Anti-Lock Brake System (ABS) event occurs.
• The shift lever is removed from the Drive position.
• The Electronic Stability Control/Traction Control Sys-
tem (ESC/TCS) activates.
• The vehicle parking brake is applied.
• Driver seatbelt is unbuckled at low speeds.
• Driver door is opened at low speeds.
• A Trailer Sway Control (TSC) event occurs.
• The driver switches ESC to full-off mode.
To Turn Off
The system will turn off and clear the set speed in
memory if:
•You push the Adaptive Cruise Control (ACC) ON/
OFF button. •
You push the Normal (Fixed Speed) Cruise Control
ON/OFF button.
• You turn OFF the ignition.
• You switch to Four-Wheel Drive Low.
To Resume
If there is a set speed in memory press the RES (resume)
button and then remove your foot from the accelerator
pedal. The EVIC will display the last set speed.
NOTE:
•If your vehicle stays at standstill for longer than two
seconds, then the system will cancel and the brake
force will be ramped-out. The driver will have to apply
the brakes to keep the vehicle at a standstill.
• ACC cannot be resumed if there is a stationary vehicle
in-front of your vehicle in close proximity.
3
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 203

To Cancel
The following conditions will cancel the Normal (Fixed
Speed) Cruise Control without clearing the memory:
•The brake pedal is applied.
• You press the CANCEL button.
• The Electronic Stability Control/Traction Control Sys-
tem (ESC/TCS) activates.
• The vehicle parking brake is applied.
• The braking temperature exceeds normal range (over-
heated).
• The shift lever is removed from the Drive position.
To Resume Speed
To resume a previously set speed, push the RES button
and release. Resume can be used at any speed above
20 mph (32 km/h).
To Turn Off
The system will turn off and erase the set speed in
memory if:
•You push the Normal (Fixed Speed) Cruise Control
ON/OFF button.
• You turn off the ignition.
• You engage Four-Wheel Drive Low.
• You push the Adaptive Cruise Control (ACC) On/Off
button.
222 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

5. Press and release theDOWNarrow button to select
“Yes”, then press and release the Right arrow button to
select reset of the Oil Life.
6. Press and release the Uparrow button to exit the EVIC
screen.
NOTE: If the indicator message illuminates when you
start the vehicle, the oil change indicator system did not
reset. If necessary, repeat this procedure.
Electronic Vehicle Information Center (EVIC)
Messages
• Front Seatbelts Unbuckled
• Driver Seatbelt Unbuckled
• Passenger Seatbelt Unbuckled
• Service Airbag System
• Traction Control Off •
Washer Fluid Low
• Oil Pressure Low
• Oil Change Due
• Fuel Low
• Service Antilock Brake System
• Service Electronic Throttle Control
• Service Power Steering
• Cruise Off
• Cruise Ready
• Cruise Set To XXX MPH
• Tire Pressure Screen With Low Tire(s) “Inflate Tire to
XX”
• Service Tire Pressure System
4
UNDERSTANDING YOUR INSTRUMENT PANEL 311

Launch Mode – If Equipped
This system maximizes acceleration traction for straight
line racing.
1. Bring vehicle to complete stop on a level track surfacewith the engine running.
2. Set the steering wheel for straight ahead driving.
3. Fully press the brake pedal.
4. Press and release the “LAUNCH” Button.
5. Press the accelerator pedal to the floor.
NOTE: If the cluster launch EVIC message indicates all
conditions are correct for launch and the throttle is
pressed to the floor quickly (within approximately
1/2 second) the system will hold the engine speed to a
preset speed (below the engine rev limiter speed).
6. Release the brake pedal. Pressing the launch control button when launch control is
active will deactivate launch control.
NOTE:
•
Launch Mode brings the engine to optimum RPM and
waits for the driver to release the brake. Launch Mode
then uses engine throttle only to achieve controlled
wheelslip for maximum acceleration through first
gear.
• Launch Mode can be initiated in any of the Select Trac
Modes.
• Launch Mode is not available until the 500 mile
break-in has been achieved.
324 UNDERSTANDING YOUR INSTRUMENT PANEL

DRIVING THROUGH WATER .............412
▫ Flowing/Rising Water ..................412
 POWER STEERING .....................414

FUEL SAVER TECHNOLOGY — IF EQUIPPED. . .415
 PARKING BRAKE ..................... .415
 ELECTRONIC BRAKE CONTROL SYSTEM . . . .418
▫ Anti-Lock Brake System (ABS) ............418
▫ Traction Control System (TCS) ............419
▫ Brake Assist System (BAS) ...............419
▫ Electronic Roll Mitigation (ERM) ..........420
▫ Electronic Stability Control (ESC) ..........421
▫ ESC Activation/Malfunction Indicator Light
And ESC OFF Indicator Light ............426
▫ Trailer Sway Control (TSC) ..............427
TIRE SAFETY INFORMATION .............428
▫ Tire Markings ....................... .428
▫ Tire Identification Number (TIN) ...........431
▫ Tire Terminology And Definitions ..........433
▫ Tire Loading And Tire Pressure ...........434
 TIRES — GENERAL INFORMATION ........438
▫ Tire Pressure ....................... .438
▫ Tire Inflation Pressures .................440
▫ Tire Pressures For High Speed Operation . . . .441
▫ Radial Ply Tires ..................... .441
▫ Tire Types .......................... .442
▫ Run Flat Tires — If Equipped .............443
▫ Spare Tires — If Equipped ...............444
388 STARTING AND OPERATING

•Auto– Fully automatic full time four-wheel drive
operation can be used on and off road. Balances traction
with seamless steering feel to provide improved han-
dling and acceleration over two-wheel drive vehicles.
The active suspension system will be in Touring Mode.
• Track –Track road calibration for use on high traction
surfaces. Driveline is maximized for traction. Some
binding may be felt on less forgiving surfaces. The
electronic brake controls are set to Partial OFF to limit
traction control management of throttle and wheel spin.
• The transmission will be in SPORT mode and pro-
vide a more aggressive shifting pattern. Refer to
“Paddle Shift Mode” in “Starting And Operating”
for further information.
• The customer has the option of going to FULL OFF
with no interaction from the ESC System. The active
suspension system will be in Full Firm mode.
• This feature will reset to AUTO on an ignition cycle. •
To w – Use this mode for towing. Vehicle suspension
will go to Firm mode. Trailer sway control is enabled
in the ESC system. The terrain switch will remain in
this position through an ignition cycle until the cus-
tomer cycles into another position.
Active Damping System
This vehicle is equipped with an electronic controlled
damping system. This system reduces body roll and pitch
in many driving situations including cornering, accelera-
tion and braking. There are 3 modes:
• Touring Mode (Available in terrain positions AUTO
and SNOW) — Used during highway speeds where a
touring suspension feel is desired.
• Firm Mode
(Available in terrain positions SPORT and
TOW) — Provides a firm suspension for better handling.
• Full Firm (Available in TRACK mode) — Provides a
full firm suspension for an aggressive track experience.
410 STARTING AND OPERATING

Launch Mode — If Equipped
This system maximizes acceleration traction for straight
line racing. To use Launch Mode please follow the steps
below:
1. Bring vehicle to complete stop on a level track surfacewith the engine running.
2. Set the steering wheel for straight ahead driving.
3. Fully press the brake pedal.
4. Press and release the “LAUNCH” Button.
5. Press the accelerator pedal to the floor.
NOTE: If the cluster launch EVIC message indicates all
conditions are correct for launch and the throttle is
pressed to the floor quickly (within approximately
1/2 second) the system will hold the engine speed to a
preset speed (below the engine rev limiter speed). 6. Release the brake pedal.
Pressing the launch control button when launch control is
active will deactivate launch control.
NOTE:
•
Launch Mode brings the engine to optimum RPM and
waits for the driver to release the brake. Launch Mode
then uses engine throttle only to achieve controlled
wheelslip for maximum acceleration through first
gear.
• Launch Mode can be initiated in any of the Select Trac
Modes.
• Launch Mode is not available until the 500 mile
(805 km) break-in has been achieved.
5
STARTING AND OPERATING 411

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.
ELECTRONIC BRAKE CONTROL SYSTEM
Your vehicle is equipped with an advanced electronic
brake control system that includes the Anti-Lock Brake
System (ABS), Traction Control System (TCS), Brake
Assist System (BAS), Electronic Roll Mitigation (ERM),
and Electronic Stability Control (ESC). All five of these
systems work together to enhance vehicle stability and
control in various driving conditions.
Also, your vehicle is equipped with Trailer Sway Control
(TSC).
Anti-Lock Brake System (ABS)
This system aids the driver in maintaining vehicle control
under adverse braking conditions. The system controls
hydraulic brake pressure to prevent wheel lock-up and
help avoid skidding on slippery surfaces during braking.
418 STARTING AND OPERATING

WARNING!
The ABS cannot prevent the natural laws of physics
from acting on the vehicle, nor can it increase the
traction afforded by prevailing road conditions. The
ABS cannot prevent collisions, including those result-
ing from excessive speed in turns, driving on very
slippery surfaces, or hydroplaning. 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.
Traction Control System (TCS)
This system monitors the amount of wheel spin of each
of the driven wheels. If wheel spin is detected, brake
pressure is applied to the slipping wheel(s) and engine
power is reduced to provide enhanced acceleration and
stability.A feature of the TCS system, Brake Limited Differential
(BLD), functions similar to a limited-slip differential and
controls the wheel spin across a driven axle. If one wheel
on a driven axle is spinning faster than the other, the
system will apply the brake of the spinning wheel. This
will allow more engine torque to be applied to the wheel
that is not spinning. This feature remains active even if
ESC system is in the “Partial Off” mode. Refer to “Elec-
tronic Stability Control (ESC)” in this section for further
information.
Brake Assist System (BAS)
The BAS is designed to optimize the vehicle’s braking
capability during emergency braking maneuvers. The
system detects an emergency braking situation by sens-
ing the rate and amount of brake application and then
applies optimum pressure to the brakes. This can help
reduce braking distances. The BAS complements the
anti-lock brake system (ABS). Applying the brakes very
5
STARTING AND OPERATING 419

WARNING!
Many factors, such as vehicle loading, road condi-
tions, and driving conditions, influence the chance
that wheel lift or rollover may occur. ERM cannot
prevent all wheel lift or rollovers, especially those
that involve leaving the roadway or striking objects
or other vehicles. The capabilities of an ERM-
equipped vehicle must never be exploited in a reck-
less or dangerous manner, which could jeopardize
the user’s safety or the safety of others.
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.Engine 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
5
STARTING AND OPERATING 421