The process generally involves releasing the fob shell to access the battery compartment. The positive side, marked with a "+", usually faces up.
How to Open Your Hyundai Santa Fe Key Fob Shell
Most modern Hyundai smart keys use a standard CR2032 3V lithium coin cell, which provides reliable power for years before needing replacement. Dispose of the old battery properly, as lithium cells are not biodegradable and should be recycled at a designated facility.
Tools and Safety Precautions You do not need a professional toolkit to change the battery, but having the right tools on hand makes the process smoother and prevents damage. Work your way around the entire circumference of the fob, applying even pressure, until the seam separates.
Opening the Hyundai Santa Fe Key Fob Shell
Removing the Old Battery With the fob open, you will see the circuit board and the battery holder. Before removing the old battery, note the orientation of the positive and negative sides.
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