How to Replace the Battery in a Lexus Key?
3 Answers
Method for replacing the battery in a Lexus key: 1. Hold the key body with your left hand and pull out the mechanical metal key; 2. Hold the key body with your left hand and place the end of the metal key into the gap at the central connection point of the key body; 3. Rotate the mechanical metal key to pry open the plastic shell of the key body; 4. Take out the key circuit board and remove the button battery; 5. Install the new battery. Taking the Lexus ES 2020 200 Excellence Edition as an example, its body dimensions are 4975mm in length, 1866mm in width, and 1447mm in height, with a wheelbase of 2870mm. The body adopts a 4-door, 5-seater sedan structure, with a fuel tank capacity of 60.6 liters and a curb weight of 1610kg.
Speaking of replacing the Lexus key fob battery, I've done it myself several times and found it much easier than expected. My key is the keyless entry type, with a small notch on the back cover. Just gently pry it open with a coin or a flathead screwdriver, then pop out the old battery—it's usually a CR2032 coin cell, which costs just a few bucks at a hardware store. When inserting the new battery, pay attention to the polarity—the side with the '+' sign should face upward. Then, simply snap the cover back on and press it firmly. The whole process takes about five minutes, saving you the unnecessary expense of a dealership visit. The key fob battery typically lasts around two years and should be replaced when the signal weakens. I was a bit nervous the first time, worried about damaging the key, but the process is actually very safe. Developing a habit of regular checks is a good idea to avoid the embarrassment of a dead battery at an inconvenient time.
When I first learned how to replace the Lexus key fob battery, I was quite nervous. But once I tried it, I found it super easy. There's a cleverly designed gap on the back cover of the key - no professional tools needed, just gently pry it open with a fingernail or key ring. After removing the old battery, I bought a CR2032 model to replace it, making sure the positive side faced upward and aligned with the slot. When putting the back cover back on, press firmly to avoid looseness. Throughout the process, be careful not to use sharp objects to pry, as they might scratch the plastic. Key fob battery lifespan varies by usage - for frequent users like me, replacement is needed about every year and a half. After mastering this skill, I even taught my family members, saving both money and hassle.
