User Manual - Page 159

For 2019 GRAND CHEROKEE SRT.

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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 Interlock
System
This vehicle is equipped with a Brake Trans-
mission Shift Interlock system (BTSI) 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 nor-
mal 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 (for regular models) or enabled
(for SRT models).
When the Fuel Economy (ECO) Mode is en-
gaged, 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. Refer to the section on
Quadra-Lift for further information.
In SRT models, the transmission will
launch (from a stop) in second gear, and the
torque converter clutch may engage at
lower engine speeds and remain on longer.
Some ECO mode functions may be tempo-
rarily inhibited based on temperature and
other factors.
Active Noise Cancellation If Equipped
Your vehicle is equipped with an Active Noise
Cancellation System. This 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
ECO Switch
157
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