Cadillac 2011 DTS Owner's Manual page 124

The ignition switch has four different positions:
In order to shift out of P (Park), ignition must be in the
ON/RUN or ACC/ACCESSORY and the brake pedal
must be applied.
3-22
vehicle is stopped, turn the ignition switch to LOCK/OFF
to turn the engine off. Retained Accessory Power (RAP)
will remain active. See Retained Accessory Power
(RAP) on page 3 23.
This is the only position in which the ignition key can be
inserted or removed. This position locks the ignition and
transmission and steering column.
Do not turn the engine off when the vehicle is moving.
This will cause a loss of power assist in the brake and
steering systems and disable the airbags.
In an emergency:
1. Brake using a firm and steady pressure. Do not
pump the brakes repeatedly. This may deplete
power assist, requiring increased brake pedal
force.
2. Shift the vehicle to neutral. This can be done while
the vehicle is moving. After shifting to neutral,
firmly apply the brakes and steer the vehicle to a
safe location.
3. Come to a complete stop, shift to P (Park), and
turn the ignition to LOCK/OFF. On vehicles with an
automatic transmission, the shift lever must be in
P (Park) to turn the ignition switch to the LOCK/
OFF position.
4. Set the parking brake. See Parking Brake on
page 3 28.
When the