DTC B1DB9-11: Left Third Row Seat Heat Control Switch - Circuit short to ground: Action

NOTE: This DTC may be induced by the driver operating the seat heater switch for longer than 120 seconds.

Check the operation of the third row left seat heater switch. Install a new third row left seat heater switch as necessary
Refer to the electrical circuit diagrams and check the third row left seat heater switch signal circuit for short circuit to ground. Repair the wiring harness or install a new third row left seat heater switch as necessary