How to Replace the Battery in a Kia K3 Key?
2 Answers
Prepare a new CR2032 coin cell battery in advance. Then use a flathead screwdriver to pry open the key casing. After creating a gap, separate the upper and lower shells along the edges. Remove the old battery inside, being careful not to disturb the other half of the casing. Insert the new battery with the positive side facing upward, ensuring correct polarity. After installing the battery, simply snap the upper and lower shells back together.
Changing the battery for a Kia K3 car key is actually quite simple—I just did it myself. You see that thin gap on the side of the key? Just use a stiff card or your fingernail to pry open the casing from there. Inside, you’ll find a small round battery—remember, the model is CR2032, which you can easily find at any supermarket. When I replaced mine, I noticed the battery slot has polarity markings; the silver side should face up when inserting the battery. The key is to avoid using excessive force when prying, as the plastic clips can break easily. After reassembly, test all the buttons to ensure the lock and unlock functions work properly—then you’re done. The whole process takes less than five minutes, much easier than visiting a dealership. However, if your key has a keyless entry feature, be extra careful during disassembly to avoid damaging the internal chip.
