Cadillac CTS 2013 Owner's Manual page 237

4. Apply the parking brake. See
Parking Brake (Electric) on
page 9 29 or Parking Brake
(Manual) on page 9 28.
WARNING
Turning off the vehicle while
moving may cause loss of power
assistance in the brake and
steering systems and disable the
airbags. While driving, only shut
the vehicle off in an emergency.
If the vehicle cannot be pulled over,
and must be shut off while driving,
turn the ignition to ACC/
ACCESSORY.
2 (ACC/ACCESSORY): This
position lets you use things like the
radio and the windscreen wipers
when the engine is off. This position
allows you to turn off the engine.
3 (ON/RUN): This position is for
driving. It is the position the ignition
switch returns to after the engine
starts and the key is released. This
position can also be used for
service and diagnostics, and to
verify the proper operation of the
malfunction indicator lamp as may
be required for emission inspection
purposes.
To shift the transmission out of
P (Park), the ignition key has to be
in ACC/ACCESSORY or ON/RUN.
The battery could be drained if the
key is left in the ACC/ACCESSORY
or ON/RUN position with the engine
off. The vehicle might not start if the
battery is allowed to drain for an
extended period of time.
4 (START): This position starts the
engine. When the engine starts,
release the key. The ignition switch
returns to ON/RUN for driving.
Driving and Operating
A warning tone will sound when the
driver door is opened, the ignition is
in ACC/ACCESSORY or LOCK/OFF
and the key is in the ignition.
Key Lock Release
Vehicles with an automatic
transmission are equipped with an
electronic key lock release system.
The key lock release is designed to
prevent ignition key removal unless
the shift lever is in P (Park).
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