How to Replace the Battery in a Roewe RX3 Key Fob?

[EverettMarie]

Press the button to pop off the decorative panel. Remove the spare mechanical key in the direction of the arrow. Carefully pry open the battery cover with a flat-head tool until the clips disengage. Remove the battery from the slot in the battery cover. Insert the new battery into the slot. The installation steps are similar to those for a folding key. After installation is complete, start the engine.

[Mitchell]

I often change my car key batteries myself, taking the Roewe RX3 as an example. There's a small gap on the back of the key. Use a small screwdriver or a hard card to gently pry open the shell, being careful not to damage the clips. Inside, you'll usually find a CR2032 coin battery. After locating the old battery, use a plastic tool or your fingernail to pry it out, avoiding contact with any metal contacts to prevent static electricity. Then, place the new battery into the slot with the positive side facing up as marked, and press the cover back on until you hear a click. After replacement, test the lock and unlock functions, and walk a few steps away to check the remote range. Doing it yourself saves the hassle and cost of visiting a 4S shop—just a few bucks for a battery, replaced annually to prevent malfunction. The process is simple, but patience is key. The key design is quite user-friendly; just avoid rushing or applying too much force when prying, and household tools can suffice.

[EllaLee]

I was a bit nervous the first time I changed the battery for my Roewe RX3 key, but it turned out to be super easy. Just pry open the middle seam of the key—I used a credit card to do it—and avoid forcing it to prevent scratches. The old battery was a flat, round type, model CR2032, and you can buy a new one for just a few bucks at the supermarket. When replacing it, align the battery with the slot, place it securely with the metal side facing up, then close the cover and press it firmly. The whole process takes no more than five minutes. I checked afterward, and all the buttons worked fine. I recommend beginners give it a try—just watch an online video, and you’ll get the hang of it. No professional tools are needed, and you’ll save dozens of bucks compared to going to a repair shop. Remember to handle it gently, avoid leaving fingerprints on the new battery (which could affect the signal), and test the door response immediately after replacement. From now on, I’ll keep an eye on the battery warning light in advance.

[ValerieLynn]

When replacing the battery, prioritize safety procedures. For the Roewe RX3 key, avoid dropping it open—use fingers to slide it open along the side or gently pry with a small tool. Do not touch the internal circuit board, and use a non-metallic object to remove the battery to prevent short circuits. When replacing the CR2032 battery, ensure correct polarity—the positive (+) marking must face upward. After inserting the new battery, close the cover firmly until you hear a locking click. Test the remote function immediately to confirm effective range, and wearing gloves is recommended to minimize static. DIY replacement is convenient and cost-effective, but attention to detail is crucial—use plastic-tipped tools to avoid damaging internal components.