How to Replace the Battery in a Lexus Key?
2 Answers
Method to replace the battery in a Lexus key: Press the push button to remove the mechanical key. There is a slot where the mechanical key is inserted; insert the key there and pry it open. Once opened, the key cover splits into two parts, with the battery located in the second part. Remove the circuit board and the old battery, then insert the new battery. Lexus is a luxury car brand under the Toyota Group. The Lexus CT, as Lexus's first compact 5-door luxury sedan, is a luxury hatchback equipped with a full hybrid system and the first to feature an inline 4-cylinder 1.8-liter Atkinson cycle engine.
I've replaced the battery in my Lexus key fob a few times and found it's not difficult but requires some care. Generally, when the key fob starts responding sluggishly or the remote range shortens, it's time for a battery change. Prepare a new CR2032 battery and a small flathead screwdriver or thin card. Locate the small seam on the side of the key fob and gently pry open the casing. When removing the old battery, avoid using excessive force to prevent breaking the plastic clips. When inserting the new battery, ensure the positive side faces up and aligns with the slot. Snap the casing back together, making sure the clips are properly seated, then test the buttons for responsiveness. I recommend doing this in good lighting to avoid losing small parts, and using quality batteries like Panasonic for better durability. The whole process takes about 10 minutes, saving you a trip to the dealership and helping develop some handy DIY skills.
