Cadillac XT4 2023 Owner's Manual page 192

If the vehicle is in accessory mode, the
gearbox can be shifted into P (Park).
If the vehicle is turned off while at a
relatively high vehicle speed, the
transmission will automatically shift to
N (Neutral). Once the vehicle is stopped,
P (Park) is automatically selected.
P : This position locks the drive wheels. Use
P (Park) when starting the engine to prevent
the vehicle from moving.
Warning
It is dangerous to get out of the vehicle
if the transmission is not in P (Park) with
the parking brake applied. The vehicle
can roll.
Do not leave the vehicle when the engine
is running. If the engine has been left
running, the vehicle can move suddenly.
You or others could be injured. To be
sure the vehicle will not move, even
when on fairly level ground, always apply
the parking brake and place the
transmission into P (Park). See Shifting
Into Park 0 184 and
Electric Parking Brake 0 196.
Driving and Operating
This vehicle is equipped with an
electronically controlled transmission. The
shift lock release button is designed to
prevent inadvertent shifting out of P (Park)
unless the ignition is on, the brake pedal is
applied, and the shift lock release button is
pressed.
When the vehicle is stopped, press ENGINE
START/STOP to turn off the vehicle. The
transmission will shift to P (Park)
automatically unless the vehicle is in
N (Neutral), See Car Wash Mode following.
The vehicle will not shift into P (Park) if it is
moving too fast. Stop the vehicle and shift
into P (Park).
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