How to replace the battery in a Kia KX3 car key?

2 Answers
MacColton
07/29/25 5:26am
The method to replace the battery in a Kia KX3 car key is: 1. Use a screwdriver to remove the remote cover and take out the key blade; 2. Insert the screwdriver into the hole, turn it clockwise to separate the remote into two parts; 3. Remove the old battery, take out the circuit board, and replace it with a new battery. The Kia KX3 is a compact 5-door, 5-seat SUV with body dimensions of 4345mm in length, 1800mm in width, and 1645mm in height, with a wheelbase of 2630mm. It is equipped with a 1.5L engine and a CVT transmission, delivering a maximum power of 84.4 kW and a maximum torque of 143.8 Nm.
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ChloeLynn
08/12/25 9:01am
I've also encountered a dead key fob battery situation with my Kia KX3 before, and changing it myself was quite simple. First, locate the small gap or hidden slot on the back or side of the key fob - usually there's one. You can gently pry it open using a small flathead screwdriver or a stiff card, but be careful not to break the plastic clips by applying too much force. The battery model is CR2032, which is readily available at supermarkets or hardware stores for cheap - just 5 yuan will do the trick. After prying it open, remove the old battery, paying attention to the polarity - the battery compartment has markings, with the positive side facing up. Insert the new battery, close the casing, and press firmly by hand to ensure a tight seal. Finally, test the remote unlock function - if the light comes on, you're good to go. The whole process takes just five minutes, saving money and hassle - I've never wasted money at the dealership since. Remember not to use metal tools to prevent short circuits, and wearing gloves makes the operation even safer.
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