How To Open Key Fob Hyundai. Replace Hyundai Key Fob BatteryIf your smart keykey FOB for your 2012 Hyundai Sonata has stopped working then the problem is most likely the battery. Insert this key into the tiny opening in the back and then pop open the Hyundai key fob.
Replace Hyundai Key Fob BatteryIf your smart keykey FOB for your 2012 Hyundai Sonata has stopped working then the problem is most likely the battery. Close the key fob housing. The key is a smart or proximity key and it is easy to change the battery.
Stick the key to your Hyundai into the vehicles ignition cylinder.
However if I press the door handle unlock button it unlocks and then my key key fob starts working again. Press and hold the open or unlock button on the keyless entry fob. Stick the key to your Hyundai into the vehicles ignition cylinder. For Newer Models.
