A guide on how to change your old Hyundai key shell to a new shell.
Step 1: Open old and new key shells (be careful of the spring)
Step 2: Prepare old blade for new shell
Step 3: Remove circuit board and battery from old shell
Step 4: Carefully break away around the transponder chip
Step 5: Cut away the glue around transponder chip
Step 6: Transfer transponder chip, battery and circuit board to new shell
Step 7: Close new case and secure with screw at the back