•Battery temperature too warm or cold.
•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.
•Engine has not reached normal operating temperature.
•Battery discharged.
•The transmission is not in DRIVE.
•Hood is open.
•Vehicle is in 4LO transfer case mode.
Other factors which can inhibit AutoStop include: fuel
level, accelerator pedal input, engine temp too high and
steering angle.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 DRIVE the engine will start when the brake
pedal is released or the throttle pedal is depressed. The
transmission will automatically reengage upon engine
restart. During this transition the brakes will hold the
vehicle to avoid undesired vehicle movement.
Conditions That Will Cause The Engine To Start Auto-
matically While In Autostop Mode
The engine will start automatically when:
•The transmission selector is moved from DRIVE to
REVERSE or NEUTRAL
5
STARTING AND OPERATING 483
•To maintain cabin temperature near the HVAC settings
•HVAC is set to full defrost mode
•Autostop time exceeds 5 minutes
•Battery voltage drops too low
•Low brake vacuum (e.g. after several brake pedal
applications)
•STOP/START OFF switch is pushed
•4WD system is put into 4LO mode
•The emissions system requires it
•A STOP/START system error occurs
Conditions That Force An Automatic Shift To Park
While In Autostop Mode
The engine will not start automatically and the transmis-
sion will be placed in PARK if:•The driver door is open and brake pedal released
•The driver door is open and the driver seat belt is
unbuckled
•The engine hood has been opened
•A STOP/START system error occurs
The engine may then be restarted by moving the trans-
mission shift selector out of PARK (e.g. to DRIVE) or, in
some cases, only by a KEY START. The Electronic Vehicle
Information Center (EVIC)/Driver Information Display
(DID) will display a SHIFT OUT OF PARK message, or a
STOP/START KEY START REQUIRED message, to indi-
cate which action is required. Refer to “Electronic Vehicle
Information Center (EVIC) or Driver Information Display
(DID)” in “Understanding Your Instrument Panel” for
further information.
484 STARTING AND OPERATING
