WARRANTY BULLETIN: WTY002 - 2008~2011MY RIO PASSENGER SEAT OCS SENSOR MAT WARRANTY EXTENSION (WTY002) - THIS BULLETIN PROVIDES INFORMATION RELATED TO THE REPLACEMENT OF THE FRONT PASSENGER OCCUPANT CLASSIFICATION SYSTEM (OCS) SENSOR MAT IN 2008~2011MY RIO (JB) VEHICLES. IF THE SENSOR MAT IS NOT WORKING PROPERLY, THE AIRBAG WARNING LIGHT ON THE CLUSTER WILL ILLUMINATE AND DTC(S) B1447, B1448, B1449 AND/OR B1450 MAY BE STORED. IF THE AIRBAG WARNING LIGHT IS ILLUMINATED AND ONE OR MORE THE ABOVE DTCS ARE STORED, FOLLOW THE REPAIR PROCEDURE OUTLINED IN TSB BOD 140 TO REPLACE THE OCS MAT. KIA IS EXTENDING THE WARRANTY FOR THE OCS SENSOR MAT FOR THE AFFECTED VEHICLES TO 15 YEARS / UNLIMITED MILEAGE, STARTING FROM THE DATE OF FIRST SERVICE (PROVIDED THE CONDITION IS NOT CAUSED BY OBVIOUS EXTERNAL DAMAGE TO THE OCS SENSOR MAT).