Honda 2003 Odyssey Owner's Manual page 267

Main Menu Table of Contents
Automatic Transmission
SHIFT LOCK RELEASE SLOT COVER
4. Insert the key in the Shift Lock
Release slot.
5. Push down on the key while you
pull the shift lever towards you
and move it out of Park to Neutral.
264
Driving
6. Remove the key from the Shift
Lock Release slot, then install a
new cover. Depress the brake
pedal and restart the engine.
If you need to use the Shift Lock
Release, it means your vehicle is
developing a problem. Have the
vehicle checked by your Honda
dealer.