Download DESCRIPTION: This bulletin provides a procedure to update the PCM with the most recent calibration for 2010 Sonata 2.4L vehicles with automatic transaxles. APPLICABLE VEHICLES: Model: 2010 Sonata 2.4L (NFA) vehicles with automatic transaxles SERVICE PROCEDURE: • Turn off all lights (Do not leave the headlight switch in auto mode) and all accessories (including heater/air conditioner/blower, radio, heated seats, rear defroster, etc.) to make certain the battery will not be discharged during reprogramming. • Perform reprogramming with the ignition key in the ON position. • Be careful not to disconnect any cables connected to the vehicle or the GDS during reprogramming.