How to Replace the Battery in a Roewe RX3 Car Key?
3 Answers
Press the button on the remote key to pop off the decorative panel. Remove the spare mechanical key in the direction of the arrow. Insert a tool into the side of the key and pry up the battery cover until the clip releases. Separate the battery cover from the key button surface along the contact area. Remove the old battery and place the new battery into the slot, ensuring proper and full contact between the battery and the battery cover.
I've been driving the Roewe RX3 for over three years and have replaced the key battery twice—it's quite simple. Usually, there's a small gap on the back of the key. Use something firm like a coin or a small screwdriver to gently pry open the casing. Take out the old battery; it's a CR2032 coin cell, the 3V type. Buy a new one from the supermarket and replace it, making sure the positive side faces up—don't put it in backward, or the key might not work. Press the cover firmly when closing it, then test the remote buttons to see if they respond. The battery should be checked after about a year and a half, as it drains even when not in use. Doing it myself saved me dozens of yuan and avoided issues with unlocking on the go. Remember to keep it away from water or grease, and cleaning the contact points inside is a good precaution.
For those who frequently handle minor repairs, replacing the battery in a Roewe RX3 key fob is quite simple. The first step is locating the slot—usually a plastic seam that can be pried open with a fingernail or flathead tool. The battery is typically a CR2032 type, available for around a dollar on e-commerce platforms or at hardware stores. When installing the new battery, ensure the positive side faces outward and the negative side contacts the inner side; incorrect placement may cause a short circuit. After reassembling, test the range—normal operation should allow responses from 6-7 meters away. If issues persist post-replacement, inspect the battery contacts for corrosion and gently clean them before retrying. The entire process usually takes five minutes, and even beginners can manage it without fear of damage. Develop a routine maintenance habit, such as checking moisture resistance annually before and after rainy seasons.
