Ford Mustang Owner's Manual page 68

Removing the Key From the Ignition
1. Put the gearshift in P (Park) (automatic
transmission) or 1 (First) (manual
transmission).
2. Set the parking brake fully.
3. Turn the ignition to the OFF (manual
transmission) or LOCK (automatic
transmission).
4. Push in the key release button until it
catches and stays in (manual transmission
only).
Key release button (manual transmission only)
5. Turn the key to LOCK (manual
transmission).
6. Remove the key.
NOTE: If your vehicle has an automatic
transmission, the gearshift lever must
be in the P (Park) position to remove
the key from the ignition.
If the key is stuck in the LOCK position, move
the steering wheel left or right until the key
turns freely.
If the driver's door is open while the key is still
in the ignition, a warning chime sounds.
66