Metal particles in the key cylinder body could interfere with the interlock lever operation, which makes it possible to remove the key from the ignition without shifting into "Park." This may cause the vehicle to roll away. Dealers will inspect and test ignition switches for contamination interference and repair them if necessary.
Electrical & Lights
IF THE VEHICLE OPERATOR DOES NOT SHIFT TO "PARK" BEFORE REMOVING THE KEY AND FAILS TO ENGAGE THE PARKING BRAKE, THE VEHICLE COULD ROLL AND A CRASH COULD OCCUR.