2002 Toyota Corolla LE - Alarm keeps going off. Had to disconnect the battery to shut it off. Have tried numerous things. Anti - Theft light on left side slightly under stering wheel blinking. We replaced the Headliner in this car yesterday. I'm assuming since the doors were left open all day when the cust. went to start car it started the anti theft and nothing we tried worked. Key in door , ignition, disconnected battery , made sure battery was charged. Let key sit in Position 2 mode where car was on - radio and dash lit up and stayed for over 10 min and anti theft light never stopped flashing. We have to keep battery un hooked b/c alarm won't stop.