How to Replace the Battery in a Changan Car Key?
2 Answers
Changan car key battery replacement method is: 1. Take out the car key; 2. Insert a flat-head screwdriver into the side gap of the key to open the key cover; 3. Remove the battery for replacement. Models under Changan include: Changan CS35, Changan Yuexiang V3, Changan CS75, Changan Yuexiang V7, Changan Yidong, etc. Taking the 2021 Changan CS75 as an example, it is a compact SUV with body dimensions of: length 4650mm, width 1850mm, height 1715mm, wheelbase of 2700mm, fuel tank capacity of 58L, and trunk capacity of 520L.
I just replaced the battery for my Changan car key myself and found it quite simple. First, you need to check if there's a small gap on the back of the key. I used a small screwdriver or fingernail to gently pry open the casing. Inside, you'll usually find a small button battery, with CR2032 being the most common model—remember this when buying a new one to avoid mistakes. When removing the old battery, be careful not to break the connector tabs. When inserting the new battery, ensure the positive and negative poles are aligned correctly, with the plus sign facing upward. Before closing the casing, test if the key buttons respond to make sure everything works properly. Avoid forcing the casing open during battery replacement, as the plastic clips can easily break. I recommend checking the battery life every two years to prevent sudden failure when parking. Lastly, if you're unsure, search for specific tutorials on your key model first, and wash your hands before starting to prevent static electricity. The whole process takes just five to ten minutes, saving both money and hassle.
