2000 Lexus ES300

TRAC OFF AND CK ENGINE LIGHTS ILLUMINATE DURING DRIVING. VEHICLE WILL THEN OPERATE IN A ROUGH MANNER AND WILL NOT STEADILY IDLE, RPM'S DRASTICALLY DROP AND VEHICLE FEELS LIKE IT WANTS TO STALL OUT ON THE ROAD DURING OPERATION. ON EACH OF THE FOLLOWING OCCASIONS THE VEHICLE WAS SERVICED AT LEXUS OF WILMINGTON IN THE STATE OF DELAWARE FOR THIS SAME ISSUE: 8/25/04 - CODE 440 PO AND RESET LIGHTS (WARRANTY) NO REPAIRS; 11/03/2005 - CODES P0046, P0441 & P0440 CLAIMED LOOSE GAS CAP & DIDN'T MAKE ANY REPAIRS; 11/16/05 - CANISTER SWITCHING VALVE SHORTED OUT, REPLACED & CLEARED LIGHTS, CHARGE 45.00 FOR VALVE; 02/16/2006 NOW OUT OF WARRANTY; AGAIN THE CHARCOAL CANISTER SHORTED OUT AND WAS REPLACED $362.52; 08/30/2006 BANK 1 SENSOR 1 OXYGEN SENSOR SHORTED OUT, REPLACED SENSOR $280.56; 10/29/09 DIAGNOSTICS SHOWED CODE P0420 CATALYST SYSTEM BELOW THRESHOLD ON BANK 1, NEED TO REPLACE..$124.95 FOR DIAGNOSTICS CHECK; REPLACE CATALYTIC CONVERTER 1,831.19; 05/13/10 CATALYTIC CONVERTER MALFUNCTION $434.25. MALFUNCTION FIRST OCCURRED DURING THE WARRANTY PERIOD AND DEALER DID NOT SUGGEST REPLACEMENT PART DURING THAT TIME. NOT UNTIL AFTER WARRANTY EXPIRED, DID LEXUS EXPRESS CONCERN FOR REPLACE OF PARTS. NOW THE ISSUE HAS AROSE AGAIN AND I DON'T FELL I SHOULD HAVE TO PAY THE DEALER FOR ANY ADDITIONAL ISSUES ARISING FROM THE SAME MALFUNCTION. I HAVE ALL SERVICE REPORTS FROM THE DEALER TO DOCUMENT ALL OF THESE OCCASIONS AND MY SERVICE HISTORY FROM DATE OF PURCHASE. ALL OF THESE ISSUES ARE RELATED TO THE TRAC OFF & CK ENGINE LIGHTS ILLUMINATING. I PURCHASED THIS VEHICLE BRAND NEW FROM LEXUS OF WILMINGTON AND FEEL THEY SHOULD NOW TAKE RESPONSIBILITY FOR THE REPAIRS THAT, MOST LIKELY, SHOULD HAVE COMMENCED DURING THE WARRANTY PERIOD.