2015 JEEP CHEROKEE engine

With Tip Start
If the engine fails to start after you have followed the
#Normal Starting#, “Extreme Cold Weather#and#Ex-
tended Park Starting#procedures, it may be flooded. To
clear any excess fuel, press the accelerator pedal all the
way to the floor and hold it. Then, cycle the ignition
switch to the START position and release it as soon as the
starter engages. The starter motor will disengage auto-
matically in 10 seconds. Once this occurs, release the
accelerator pedal, cycle the ignition to the LOCK posi-
tion, wait 10 to 15 seconds, then repeat the “Normal
Starting” procedure.
CAUTION!
To prevent damage to the starter, wait 10 to 15
seconds before trying again.
After Starting
The idle speed is controlled automatically and it will
decrease as the engine warms up.
STOP/START SYSTEM — 3.2L ENGINE
The Stop/Start function is developed to reduce emis-
sions. The system will stop the engine automatically
during a vehicle stop if the required conditions are met.
Releasing the brake pedal or pressing the accelerator
pedal will automatically re-start the engine.
Automatic Mode
The Stop/Start feature is enabled after every normal
customer engine start. At that time, the system will go
into STOP/START READY and if all other conditions are
met, can go into a STOP/START AUTOSTOP ACTIVE
“Autostop” mode.
5
STARTING AND OPERATING 475

To Activate The Autostop Mode, The Following Must
Occur:
•The system must be in STOP/START READY state. A
STOP/START READY message will be displayed in
the Electronic Vehicle Information Center (EVIC) or
Driver Information Display (DID) within the Stop/
Start section. Refer to “Electronic Vehicle Information
Center (EVIC)” or “Driver Information Display (DID)”
in “Understanding Your Instrument Panel” for further
information.
•The vehicle must be completely stopped.
•The shifter must be in a forward gear and the brake
pedal depressed.
The engine will shut down, the tachometer will move to
the zero position and the Stop/Start telltale will illumi-
nate indicating you are in Autostop. Customer settings
will be maintained upon return to an engine running
condition.
Possible Reasons The Engine Does Not
AUTOSTOP
Prior to engine shut down, the system will check many
safety and comfort conditions to see if they are fulfilled.
Detailed information about the operation of the Stop/
Start system may be viewed in the EVIC/DID Stop/Start
Screen. In the following situations the engine will not
stop:
•Driver ’s seat belt is not buckled.
•Driver ’s door is not closed.
•Battery temperature is too warm or cold.
476 STARTING AND OPERATING

•Battery charge is low.
•The vehicle is on a steep grade.
•Cabin heating or cooling is in process and an accept-
able cabin temperature has not been achieved.
•HVAC is set to full defrost mode at a high blower
speed.
•HVAC set to MAX A/C.
•Engine has not reached normal operating temperature.
•The transmission is not in a forward gear.
•Hood is open.
•Vehicle is in 4LO transfer case mode.
•Brake pedal is not pressed with sufficient pressure.
Other Factors Which Can Inhibit Autostop Include:
•Fuel level.
•Accelerator pedal input.
•Engine temp too high.
•5 MPH threshold not achieved from previous AU-
TOSTOP.
•Steering angle beyond threshold.
•ACC is on and speed is set.
It may be possible for the vehicle to be driven several
times without the STOP/START system going into a
STOP/START READY state under more extreme condi-
tions of the items listed above.
To Start The Engine While In Autostop Mode
While in a forward gear, the engine will start when the
brake pedal is released or the throttle pedal is depressed.
The transmission will automatically re-engage upon en-
gine restart.
5
STARTING AND OPERATING 477

Conditions That Will Cause The Engine To Start Auto-
matically While In Autostop Mode:
•The transmission selector is moved out of DRIVE.
•To maintain cabin temperature comfort.
•HVAC is set to full defrost mode.
•HVAC system temperature or fan speed is manually
adjusted.
•Battery voltage drops too low.
•Low brake vacuum (e.g. after several brake pedal
applications).
•STOP/START OFF switch is pressed.
•A STOP/START system error occurs.
•4WD system is put into 4LO mode.
Conditions That Force An Application Of The Electric
Park Brake While In Autostop Mode:
•The drivers door is open and brake pedal released.
•The drivers door is open and the drivers seat belt is
unbuckled.
•The engine hood has been opened.
•A STOP/START system error occurs.
If the Electric Park Brake is applied with the engine off,
the engine may require a manual restart and the electric
park brake may require a manual release (depress brake
pedal and press Electric Park Brake switch). Refer to
“Electronic Vehicle Information Center (EVIC)” or
“Driver Information Display (DID)” in “Understanding
Your Instrument Panel” for further information.
478 STARTING AND OPERATING

To Manually Turn Off The Stop/Start System
1. Press the STOP/START Off switch (located on the
switch bank). The light on the switch will illuminate.
2. The “STOP/START OFF” message will appear in
Electronic Vehicle Information Center (EVIC) or
Driver Information Display (DID). Refer to “Electronic
Vehicle Information Center (EVIC)” or “Driver Infor-
mation Display (DID)” in “Understanding Your In-
strument Panel” for further information.
3. At the next vehicle stop (after turning off the STOP/
START system) the engine will not be stopped.
4. The STOP/START system will reset itself back to an
ON condition every time the ignition is turned off and
back on.
To Manually Turn On The Stop/Start System
Press the STOP/START Off switch (located on the switch
bank). The light on the switch will turn off.
System Malfunction
If there is a malfunction in the STOP/START system, the
system will not shut down the engine. A “SERVICE
STOP/START SYSTEM” message will appear in the
Electronic Vehicle Information Center (EVIC) or Driver
Information Display (DID). Refer to “Electronic Vehicle
STOP/START OFF Switch
5
STARTING AND OPERATING 479

Information Center (EVIC)” or “Driver Information Dis-
play (DID)“ in “Understanding Your Instrument Panel”
for further information.
If the “SERVICE STOP/START SYSTEM” message ap-
pears in the EVIC, have the system checked by your
authorized dealer.
ENGINE BLOCK HEATER — IF EQUIPPED
The engine block heater warms the engine and permits
quicker starts in cold weather.
Connect the cord to a 110-115 Volt AC electrical outlet
with a grounded, three-wire extension cord.
For ambient temperatures below 0°F (-18°C), the engine
block heater is recommended. For ambient temperatures
below -20°F (-29°C), the engine block heater is required.
The engine block heater cord is routed under the hood,
behind to the driver ’s side headlamp. Follow the steps
below to properly use the engine block heater:
1. Locate the engine block heater cord (behind the driv-
er ’s side headlamp).
2. Undo the Velcro strap that secures the heater cord in
place.
3. Pull the cord to the front of the vehicle and plug it into
a grounded, three-wire extension cord.
4. After the vehicle is running, reattach the cord to the
Velcro strap and properly stow away behind the
driver ’s side headlamp.
480 STARTING AND OPERATING

NOTE:
•The engine block heater cord is a factory installed
option. If your vehicle is not equipped, heater cords
are available from your authorized MOPAR® dealer.
•The engine block heater will require 110 Volts AC and
6.5 Amps to activate the heater element.
•The engine block heater must be plugged in at least
one hour to have an adequate warming effect on the
engine.
WARNING!
Remember to disconnect the engine block heater
cord before driving. Damage to the 110-115 Volt
electrical cord could cause electrocution.
AUTOMATIC TRANSMISSION
WARNING!
•It is dangerous to shift out of PARK or NEUTRAL
if the engine speed is higher than idle speed. If
your foot is not firmly pressing the brake pedal, the
vehicle could accelerate quickly forward or in re-
verse. You could lose control of the vehicle and hit
someone or something. Only shift into gear when
the engine is idling normally and your foot is
firmly pressing the brake pedal.
(Continued)
5
STARTING AND OPERATING 481

WARNING!(Continued)
•Unintended movement of a vehicle could injure
those in or near the vehicle. As with all vehicles,
you should never exit a vehicle while the engine is
running. Before exiting a vehicle, always apply the
parking brake, shift the transmission into PARK,
turn the engine OFF, and remove the key fob. When
the ignition is in the LOCK/OFF (key removal)
position, the transmission is locked in PARK, se-
curing the vehicle against unwanted movement.
•When leaving the vehicle, always make sure the
ignition is in the OFF position, remove the key fob
from the vehicle, and lock the vehicle.
(Continued)
WARNING!(Continued)
•Never leave children alone in a vehicle, or with
access to an unlocked vehicle. Allowing children to
be in a vehicle unattended is dangerous for a
number of reasons. A child or others could be
seriously or fatally injured. Children should be
warned not to touch the parking brake, brake pedal
or the transmission gear selector.
•Do not leave the key fob in or near the vehicle (or
in a location accessible to children), and do not
leave the ignition (in a vehicle equipped with
Keyless Enter-N-Go™) in the ACC or ON/RUN
position. A child could operate power windows,
other controls, or move the vehicle.
482 STARTING AND OPERATING