TSB: NAVIGATION HEAD UNIT SD CARD REPLACEMENT - THIS BULLETIN DESCRIBES THE SD CARD EXCHANGE/REPLACEMENT PROCEDURE RELATED TO ERROR MESSAGES THAT MAY BE DISPLAYED ON THE NAVIGATION SCREEN WHEN THE INCORRECT SD CARD IS INSERTED. NOTE: ONLY NEW MODELS (DURING PDI INSPECTION OR AT THE POINT OF PURCHASE) OR COMPATIBILITY MISMATCHES THAT OCCUR AFTER HEAD UNIT REPLACEMENT WILL BE CONSIDERED FOR THIS PROGRAM.