How to Disassemble a Changan CS75 Key to Replace the Battery?
4 Answers
Pull out the mechanical key from the key fob. Press the button on one side of the key. Then you can remove the mechanical key. Then, you can use the mechanical key to pry open the shell of the remote key. Once a gap is pried open, you can slowly open the entire key. Flip over the shell with the blue circuit board, replace the battery, and reassemble the key.
I've previously owned a Changan CS75 and have replaced the key battery more than once or twice—it's quite easy to DIY. On the back of the key, there's usually a small gap or screw hole. You'll need to gently unscrew it with a small Phillips-head screwdriver or simply pry open the plastic shell with your fingernail along the gap. Once opened, remove the old battery (typically a CR2032 model), making sure not to reverse the positive and negative terminals, then install the new battery. When closing the shell, align the clips and press gently—no need to use excessive force to avoid damaging the internal circuitry, which would require replacing the entire key. Key batteries usually last one to two years before needing replacement. Personally, I keep a spare battery at home to avoid sudden malfunctions. Finally, test the button functions to ensure everything works—it’s usually resolved in minutes if you’re handy with tools.
Key not working? Don't worry, I've changed the battery for my Changan CS75 myself. The process is actually quite simple. There's a small gap or screw on the back of the key - just use a small tool like a screwdriver or card to pry it open. After opening, locate the battery, note its model (CR2032) and orientation, replace it with a new one, and reassemble. Be gentle to avoid damaging the key casing or internal components, otherwise repairs could be troublesome. I recommend buying the battery at an auto parts store - it's low cost and safe. Make it a habit to regularly check battery condition to avoid being stranded, as car keys are crucial for daily convenience. The whole process doesn't take much effort, and DIY can save you dozens in repair fees.
How to replace the battery in a Changan CS75 key? I've tried it a few times, it's quite straightforward. There's usually a small gap on the back of the key. Use a screwdriver to gently pry open the plastic shell, remove the old battery and replace it with a new CR2032, making sure not to reverse the electrodes. Close the cover and press firmly, then test the buttons to ensure they work. Be careful not to be too rough during the process to avoid injuring your hands or damaging the electronic components.
