How to open and replace the battery of Dongfeng Fengshen AX7 key?
4 Answers
Dongfeng Fengshen AX7 key opening and battery replacement method: 1. Remove the silver decoration of the key; 2. Use a flat-head screwdriver to pry open the key along the gap at the edge of the shell to see the battery; 3. Take out the old battery and replace it with a new one; 4. Reassemble the shell in reverse order. The Dongfeng Fengshen AX7 is a compact SUV equipped with two engines, a 2.0L and a 2.3L naturally aspirated engine. The maximum power of the 2.0L naturally aspirated engine is 110kw, and the maximum power of the 2.3L naturally aspirated engine is 125kw.
I replaced the battery for my Fengshen AX7 key myself despite my presbyopia, and the steps were quite simple. There's a small gap on the side of the key—just wedge a one-yuan coin in and gently twist to open it. Pay attention to the round battery inside with a notch; its model is CR2032. When buying a new battery at the supermarket, make sure to check the positive and negative sides—place it with the printed side facing up. After installation, press the cover tightly until you hear a click. Back when I worked in maintenance at the factory, I often saw young folks prying it open forcefully and breaking the plastic clips—plenty of lessons there. After replacement, I recommend standing by the car and pressing the unlock button several times to test responsiveness. It would be awkward if it fails on a rainy day.
For disassembling car keys, I prefer using thin cards as makeshift tools. Pry a plastic piece from nail clippers and insert it along the silver strip on the side of the Fengshen key, sliding halfway around. Focus on the button battery at the bottom—avoid touching it directly with fingers as sweat can corrode the metal surface. After installing a CR2032 battery bought from a convenience store, remember to rub the copper contact points in the battery compartment with an eraser. Once when helping a neighbor replace their battery, I found electrolyte leakage from the old battery—use alcohol-dipped cotton swabs for careful cleaning during removal. During reassembly, snap the top part first before pressing the sides, which requires less effort than pushing the middle directly. Finally, test the remote control range with your car—normal response should occur within 20 meters.
On the back of the Fengshen car key, there's a hidden mechanism. Flip to the side with the key icon, pry open the small groove with your fingernail, and the entire back cover can slide off. The battery compartment has a spring - a light poke with a toothpick will eject the old battery. I prefer buying Panasonic CR2032 batteries from stationery stores as they last longer than generic brands. When installing the new battery, make sure the edge notch faces upwards; installing it backwards can fry the circuit board. Last time when helping my daughter replace hers, I found her key had water damage causing contact oxidation - just brighten it with a pencil eraser. When reassembling, you'll hear three clicks to confirm proper alignment. Here's a handy tip: when storing spare keys long-term, place a piece of paper between the batteries to prevent power drain.
