2018 JEEP WRANGLER JK ECO mode

Heated Seats — If Equipped
On some models, the front driver and passenger seats may
be equipped with heaters in both the seat cushions and
seatbacks.
There are two heated seat switches that allow the driver
and passenger to operate the seats independently. The
controls for each seat are located on a switch bank near the
bottom center of the instrument panel.
You can choose from HI, LO or OFF heat settings. Amber
indicator lights in each switch indicate the level of heat in
use. Two indicator lights will illuminate for HI, one for LO
and none for OFF.Push the switch once to select HI-level heating.
Push the switch a second time to select LO-level
heating. Push the switch a third time to shut the
heating elements OFF.
When the HI-level setting is selected, the heater will
provide a boosted heat level during the initial stages of
operation. Then, the heat output will drop to the normal
HI-level. If the HI-level setting is selected, the system will
automatically switch to LO-level after approximately 30
minutes of continuous operation. At that time, the number of illuminated LEDs changes from two to one, indicating
the change. The LO-level setting will turn OFF automati-
cally after approximately 30 minutes.
NOTE:
When a heat setting is selected, heat will be felt
within two to five minutes.
3
GETTING TO KNOW YOUR VEHICLE 39

WARNING!
Never leave children unattended in a vehicle, and do
not let children play with power windows. Do not
leave the key fob in or near the vehicle, or in a location
accessible to children. Occupants, particularly unat-
tended children, can become entrapped by the win-
dows while operating the power window switches.
Such entrapment may result in serious injury or death.NOTE:
•
For vehicles not equipped with the instrument cluster
display, the power window switches will remain active
for 45 seconds after the ignition switch is turned to the
LOCK position. Opening either front door will cancel
this feature.
• For vehicles equipped with the instrument cluster dis-
play, the power window switches will remain active for
up to 10 minutes after the ignition switch is turned to the
LOCK position. Opening either front door will cancel
this feature.
Four-Door Models
The lower left switch controls the left rear passenger
window, and the lower right switch controls the right rear
passenger window.
Wind Buffeting
Wind buffeting can be described as the perception of
pressure on the ears or a helicopter-type sound in the ears.
Your vehicle may exhibit wind buffeting with the windows
down in certain open or partially open positions. This is a
normal occurrence and can be minimized by adjusting the
window opening.

WARNING!(Continued)
•The capabilities of an ABS equipped vehicle must
never be exploited in a reckless or dangerous manner
that could jeopardize the user ’s safety or the safety of
others.
ABS is designed to function with the OEM tires. Modifica-
tion may result in degraded ABS performance.
Anti-Lock Brake Warning Light
The yellow “Anti-Lock Brake Warning Light” will turn on
when the ignition is turned to the ON/RUN mode and
may stay on for as long as four seconds.
If the “Anti-Lock Brake Warning Light” remains on or
comes 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 sys-
tem will continue to operate normally if the “Brake System
Warning Light” is not on.
If the “Anti-Lock Brake Warning Light” is on, the brake
system should be serviced as soon as possible to restore the benefits of anti-lock brakes. If the “Anti-Lock Brake Warn-
ing Light” does not come on when the ignition is turned to
the ON/RUN mode, have the light repaired as soon as
possible.
Electronic Brake Control System
Your vehicle is equipped with an advanced Electronic
Brake Control system (EBC). This system includes Elec-
tronic Brake Force Distribution (EBD), Brake Assist System
(BAS), Hill Start Assist (HSA), Traction Control System
(TCS), Electronic Stability Control (ESC), and Electronic
Roll Mitigation (ERM). These systems work together to
enhance both vehicle stability and control in various driv-
ing conditions.
Your vehicle may also be equipped with Trailer Sway
Control (TSC) and Hill Descent Control (HDC).
Electronic Brake Force Distribution (EBD)
This function manages the distribution of the braking
torque between the front and rear axles by limiting braking
pressure to the rear axle. This is done to prevent overslip of
the rear wheels to avoid vehicle instability, and to prevent
the rear axle from entering ABS before the front axle.
5
SAFETY 205

Brake System Warning Light
The red “Brake System Warning Light” will turn on when
the ignition is turned to the ON/RUN mode and may stay
on for as long as four seconds.
If the “Brake System Warning Light” remains on or comes
on while driving, it indicates that the brake system is not
functioning properly and that immediate service is re-
quired. If the “Brake System Warning Light” does not come
on when the ignition is turned to the ON/RUN mode, have
the light repaired as soon as possible.
Brake Assist System (BAS)
The BAS is designed to optimize the vehicle’s braking
capability during emergency braking maneuvers. The sys-
tem detects an emergency braking situation by sensing 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 quickly
results in the best BAS assistance. To receive the benefit of
the system, you must apply continuous braking pressure
during the stopping sequence, (do not “pump” the brakes).
Do not reduce brake pedal pressure unless braking is nolonger desired. Once the brake pedal is released, the BAS is
deactivated.

WARNING!
•When in “Partial Off” mode, the TCS functionality
of ESC, (except for the limited slip feature described
in the TCS section), has been disabled and the “ESC
Off Indicator Light” will be illuminated. When in
“Partial Off” mode, the engine power reduction
feature of TCS is disabled, and the enhanced vehicle
stability offered by the ESC system is reduced.
• Trailer Sway Control (TSC) is disabled when the ESC
system is in the Partial Offmode.
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 is turned to the ON mode. 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 light remains on
after several ignition cycles, and the vehicle has been
driven several miles (kilometers) at speeds greater than 30 mph (48 km/h), see your authorized dealer as soon as
possible to have the problem diagnosed and corrected.The “ESC Activation/Malfunction Indicator Light” (located in
the instrument cluster) starts to flash as soon as the tires lose
traction and the ESC system becomes active. The “ESC
Activation/Malfunction Indicator Light” also flashes when 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.
NOTE:
•
The “ESC Activation/Malfunction Indicator Light” and
the “ESC OFF Indicator Light” come on momentarily
each time the ignition is turned ON.
• Each time the ignition is turned ON, the ESC system will
be on even if it was turned off previously.
• The ESC system will make buzzing or clicking sounds
when it is active. This is normal; the sounds will stop
when ESC becomes inactive following the maneuver
that caused the ESC activation.
5
SAFETY 213

DRIVE position. Tapping (-) to enter AutoStick mode will
downshift the transmission to the next lower gear, while
using (+) to enter AutoStick mode will retain the current
gear. When AutoStick is active, the current transmission
gear is displayed in the instrument cluster.
In AutoStick mode, the transmission will shift up or down
when (+/-) is manually selected by the driver, unless an
engine lugging or overspeed condition would result. It will
remain in the selected gear until another upshift or down-
shift is chosen, except as described below.
•The transmission will automatically upshift when nec-
essary to prevent engine over-speed.
• Heavily pressing the accelerator pedal will generate an
automatic downshift (for improved acceleration) when
reasonable.
• The transmission will automatically downshift as the
vehicle slows (to prevent engine lugging) and will
display the current gear.
• The transmission will automatically downshift to first
gear when coming to a stop. After a stop, the driver
should manually upshift (+) the transmission as the
vehicle is accelerated. •
You can start out, from a stop, in first or second gear.
Tapping (+) (at a stop) will allow starting in second gear.
Starting out in second gear can be helpful in snowy or
icy conditions.
• The system will ignore attempts to upshift at too low of
a vehicle speed.
• Avoid using speed control when AutoStick is engaged.
• Transmission shifting will be more noticeable when
AutoStick is enabled.
NOTE: When the transfer case is in the 4L (Low) range, the
transmission will shift automatically (but no higher than
the displayed gear).
To disengage AutoStick mode, hold the gear selector to the
right (+) until Dis once again displayed in the instrument
cluster. You can shift in or out of the AutoStick mode at any
time without taking your foot off the accelerator pedal.

NOTE:The stabilizer/sway bar may be torque locked due
to left and right suspension height differences. This condi-
tion is due to driving surface differences or vehicle loading.
In order for the stabilizer/sway bar to disconnect/
reconnect, the right and left halves of the bar must be
aligned. This alignment may require that the vehicle be
driven onto level ground or rocked from side to side.
To return to on-road mode, push the SWAY BAR switch
again.

WARNING!(Continued)
•Keep hands, tools, clothing, and jewelry away from
the radiator cooling fan when the hood is raised. The
fan starts automatically and may start at any time,
whether the engine is running or not.
• When working near the radiator cooling fan, discon-
nect the fan motor lead or turn the ignition to the
OFF mode. The fan is temperature controlled and can
start at any time the ignition is in the ON mode.
• You or others can be badly burned by hot engine
coolant (antifreeze) or steam from your radiator. If
you see or hear steam coming from under the hood,
do not open the hood until the radiator has had time
to cool. Never try to open a cooling system pressure
cap when the radiator is hot.
Engine Coolant Checks
Check the engine coolant (antifreeze) protection every 12
months (before the onset of freezing weather, where appli-
cable). If the engine coolant (antifreeze) is dirty or rusty in
appearance, the system should be drained, flushed and
refilled with fresh engine coolant (antifreeze). Check the
front of the A/C condenser (if equipped) or radiator for
any accumulation of bugs, leaves, etc. If dirty, clean by gently spraying water from a garden hose vertically down
the face of the A/C condenser (if equipped) or the back of
the radiator core.
Check the engine cooling system hoses for brittle rubber,
cracking, tears, cuts, and tightness of the connection at the
coolant recovery bottle and radiator. Inspect the entire
system for leaks. DO NOT REMOVE THE COOLANT
PRESSURE CAP WHEN THE COOLING SYSTEM IS HOT.
Cooling System — Drain, Flush And Refill
NOTE:
Some vehicles require special tools to add coolant
properly. Failure to fill these systems properly could lead to
severe internal engine damage. If any coolant is needed to
be added to the system please contact your local autho-
rized dealer.
If the engine coolant (antifreeze) is dirty or contains visible
sediment, have an authorized dealer clean and flush with
OAT coolant (antifreeze) (conforming to MS.90032).
Refer to the “Maintenance Plan” in this section for the
proper maintenance intervals.
386 SERVICING AND MAINTENANCE