HCU/TCU UPGRADE - FOR 100 MESH SOLENOID EQUIPPED HYBRID TRANSMISSIONS -THIS BULLETIN PROVIDES INFORMATION RELATED TO A SOFTWARE UPGRADE OF THE HYBRID CONTROL UNIT (HCU) AND THE TRANSMISSION CONTROL UNIT (TCU) OF SOME 2011-2016 MY OPTIMA HYBRID (TF HEV) VEHICLES AFTER REPLACEMENT OF THE TRANSMISSION WITH IMPROVED 100 MESH SOLONOID FILTERS HAS TAKEN PLACE. TO APPLY THE IMPROVED LOGIC, THE HCU/TCU SHOULD BE REPROGRAMMED USING THE GDS/KDS DOWNLOAD, AS DESCRIBED IN THIS BULLETIN.
