How to Open a Lexus Key?
2 Answers
Take out the mechanical key, which will be used to pry open the remote key; Insert the mechanical key or a flat-head screwdriver into the groove of the remote key, twist it left and right, and the key shell will split into two halves; After installing the new battery, cover the chip and then restore the remote key to its original state.
I've handled quite a few car key issues myself, and opening a Lexus key is actually quite simple. First, look for a small groove or tiny release button on the back or side of the key. I usually use a thin plastic pry tool or a credit card to gently poke into that spot—avoid using metal to prevent scratches. Once pried open, the casing typically splits into two halves, revealing the coin battery and circuit board inside—usually a CR2032 model. Make sure to note the positive and negative orientation to avoid reversing it. Before replacing the battery, turn off the vehicle or move the key away to avoid interference. Align the casing and press it back together until you hear a click, indicating it's locked. Test the remote functions by trying to lock and unlock the doors. Get into the habit of replacing the battery regularly, about every two years, to avoid last-minute failures. If your key is a smart model, the design might differ, so checking the manual is safer. This small DIY repair saves you a trip to the shop, but be gentle to avoid damaging the plastic clips.
