How to Replace the Battery in a Refine S3 Key

[ZaneFitz]

There are two screws on the back cover of the car key. Use a screwdriver to remove each screw separately, then open the back cover to reveal the battery compartment. Remove the old battery, install the new battery, then reattach the back cover and tighten the screws.

[DeCorbin]

I've used several JAC Refine S3s, and changing the key battery is quite simple: find a small flat-head screwdriver or coin, gently pry open the back cover along the edge gap of the key to reveal the CR2032 coin battery inside. When removing the old battery, avoid pulling hard; carefully place the new battery with the shiny side facing up (corresponding to the key surface label). After installation, press the cover firmly and test the remote function to ensure it works properly. The key is well-designed, but don't use too much force when prying to avoid damaging the plastic clips. Keep it dry to prevent short circuits. For batteries, it's recommended to choose durable brands like Panasonic and check for replacement every two years. If the key buttons respond slowly, replace the battery early to avoid being unable to open the car door. This kind of DIY maintenance saves time and hones your hands-on skills, making it a popular tip to share with fellow car enthusiasts.