2012 LEXUS IS Electronic Stability Control Esc Problems

HI , MY FIRST NAME IS [XXX] LAST NAME IS [XXX] ,MY MAILING ADDRESS IS [XXX]. I HAS A LEXUS IS 250 2012 , 86000 MILE LAST 10 MONTH AGO MY CAR HAS A RECALL MAIL REPLACEMENT AIR BAG FROM LEXUS,BUT MY CAR WAS IN A GOOD CONDITION EVERY THING IS FUNCTION GOOD WITH NO ANY PROBLEM, BUT AFTER I TOOK MY CAR TO THE LEXUS OF TOWSON LOCATION 1040 YORK RD , TOWSON, MD 21204 .AFTER THEY REPLACEMENT MY CAR AIR BAG .MY CAR WAS WENT ON A WARNING LIGHT NOTE THAT AIR BAG OFF ,SO IT MEANS AIR BAG NOT WORKING PROPERLY ,BUT BEFORE THAT MY CAR HAS NON OF THE LIGHT PROBLEM EVERYTHING IS GOOD. I CALL THE LEXUS OF TOWNSON. TOLD THEM MY CAR WAS A WARNING LIGHT AFTER THE RECALL REPLACEMENT AIR BAG, THEY TOLD ME THAT I HAS TO PAID FOR 300.00$ FOR DIAGNOSTIC...