User Manual - Page 108

For 2021 JEEP GRAND CHEROKEE.

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106 STARTING AND OPERATING
IGNITION PARK INTERLOCK
This vehicle is equipped with an Ignition Park
Interlock which requires the transmission to be
in PARK before the ignition can be turned to the
OFF mode. This helps the driver avoid
inadvertently leaving the vehicle without placing
the transmission in PARK. This system also
locks the transmission in PARK whenever the
ignition is in the OFF mode.
NOTE:
The transmission is NOT locked in PARK when
the ignition is in the ACC mode (even though the
engine will be off). Ensure that the transmission
is in PARK, and the ignition is OFF (not in ACC
mode) before exiting the vehicle.
BRAKE/TRANSMISSION SHIFT
I
NTERLOCK (BTSI) S YSTEM
This vehicle is equipped with a BTSI system that
holds the transmission gear selector in PARK
unless the brakes are applied. To shift the
transmission out of PARK, the engine must be
running and the brake pedal must be pressed.
The brake pedal must also be pressed to shift
from NEUTRAL into DRIVE or REVERSE when the
vehicle is stopped or moving at low speeds.
FUEL ECONOMY (ECO) MODE
The Fuel Economy (ECO) mode can improve the
vehicle's overall fuel economy during normal
driving conditions. Push the “ECO” switch in the
center stack of the instrument panel to activate
or disable ECO mode. A light on the switch
indicates when ECO mode is disabled.
Fuel Economy Mode Switch
When the Fuel Economy (ECO) Mode is
engaged, the vehicle control systems will
change the following:
The transmission will upshift sooner and
downshift later.
The overall driving performance will be more
conservative.
Vehicles with Quadra-Lift air suspension will
operate in "Aero" mode over a broader speed
range Ú page 115.
Some ECO mode functions may be tempo-
rarily inhibited based on temperature and
other factors.
Active Noise Cancellation (ANC) — If
Equipped
The ANC system uses four microphones
embedded in the headliner to detect
undesirable exhaust noise, which sometimes
occurs when operating in specific driving
conditions such as ECO and Tow mode. An
on-board frequency generator creates
counteracting sound waves through the audio
system to help keep the vehicle quiet.
Do not shift between PARK, REVERSE,
NEUTRAL, or DRIVE when the engine is
above idle speed.
Before shifting into any gear, make sure
your foot is firmly pressing the brake pedal.
CAUTION! (Continued)
21_WK_OM_EN_USC_t.book Page 106
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