How to Replace the Battery in a Lae Festa Key Fob?
2 Answers
The method to replace the battery in a Lae Festa key fob: 1. There is a silver round button at the top of the key fob's front side, press this button; 2. With the other hand, grasp the silver part at the top and pull out the mechanical key; 3. Insert the mechanical key back halfway and turn it clockwise to separate the key fob's cover, or use a small flathead screwdriver to pry it open; 4. Once a gap appears, use your hands to split the key fob cover into two halves, one of which has a rubber pad and circuit board, remove the rubber pad; 5. Continue using a small knife or flathead screwdriver to pry open the circuit board along one side; 5. After prying open the circuit board, you will see the round coin battery inside, remove the old battery and replace it with a new one.
I've replaced the battery in my Elantra key fob several times myself – it's super simple and hassle-free. You'll need a new CR2032 coin cell battery, which you can easily find at supermarkets or drugstores for around 10 yuan. On the back of the key, there's usually a small groove. Use a small screwdriver or your fingernail to gently pry open the casing, being careful not to apply too much force to avoid damaging the plastic. When removing the old battery, note the orientation (usually the concave side faces up or the positive mark faces outward). Insert the new battery in the same orientation, then firmly snap the cover back in place until you hear a click. Finally, test the unlock button for responsiveness – typically these batteries last 1-2 years with normal use. If it still doesn't work, try cleaning the contacts as it might be a connection issue. DIYing this saves significant time and money compared to visiting the dealership, plus it's quite satisfying. Just remember to use plastic tools to avoid scratching the key.
