What is the tutorial for replacing the battery in a Lexus car key?
2 Answers
Here are the steps for replacing the battery in a Lexus car key: 1. Remove the battery: Detach the mechanical part of the key, insert a flat-head screwdriver (or the flat-head part of the mechanical key) into the groove, rotate it left and right to separate the electronic key casing into two halves, and lift the chip section to reveal the round coin battery. Remove the battery, confirm the positive and negative sides, and install a new lithium coin battery. 2. Reassemble: After installing the new lithium coin battery, cover the chip section again, reassemble the key body, and press any button on the key. If a light turns on, it indicates that the electronic key is functioning properly.
I just replaced the key battery for my old Lexus last week, and the process was actually quite simple. First, confirm the key model - Lexus commonly uses CR2032 coin batteries. Use a flathead screwdriver to gently pry open the back cover along a thin seam, being careful to avoid scratching the casing. When you see the battery compartment, don't force it out - use a toothpick to gently push out the old battery. When installing the new battery, make sure the positive side faces upward (the side with text facing outward). The whole process takes just five minutes. After replacement, remember to test the button responsiveness. If the remote control range becomes shorter, that might be a sign it's time to change the battery. Doing it yourself saves hundreds compared to going to the dealership, and all you need are a screwdriver and toothpick.
