How to replace the battery in a Peugeot 408 key?
3 Answers
The electronic car key needs to be replaced periodically. Replacing the battery in a Peugeot 408 key involves three steps: 1. First, after obtaining the Peugeot 408 electronic remote key, you need to pry open the battery compartment cover from the rear end of the key. 2. Next, after prying open the cover, pull apart the clips at both ends of the key to remove the old battery. 3. Finally, after taking out the old battery, unpack the new battery, ensure the correct polarity, replace the old battery with the new one, and then close the cover to complete the battery replacement for the Peugeot 408 car electronic remote key.
I previously changed the battery in my Peugeot 408's remote key, and it was quite simple—no need to waste money at a repair shop. Usually, there's a small slot or gap on the back of the key. You can gently pry open the battery cover using a coin, a thin tool, or even your fingernail. Just be careful not to use too much force to avoid damaging the plastic. The battery model is typically CR2032, which you can buy for just a few dollars at an electronics store. When removing the old battery, take note of how the positive and negative sides are placed, and insert the new battery the same way—it won't work if placed backward. After replacing it, close the cover and test the unlock function by pressing the remote a few times. If it works, you're all set. The battery usually lasts about one to two years. If you notice the remote's range shortening or becoming less responsive, it's time for a replacement—saving money and hassle.
I'm always excited about DIY key battery replacement! For the Peugeot 408 smart key, there's a clip on the back - just gently pry it open with a small screwdriver or credit card (no brute force needed). After opening the battery compartment, remove the old CR2032 battery. Beginners should take a photo to remember the polarity positions to avoid mistakes. Clean the contacts before inserting the new battery, then securely close the cover. Immediately test the buttons to confirm functionality. I always keep a small magnetic tray handy to prevent losing tiny parts. The whole job takes just minutes, requires no special tools, saves time, and gives your fingers some exercise. It's also a good opportunity to check the key's overall condition, like whether buttons are loose.
