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Where to replace the battery when the car key runs out of power?

2 Answers

StRuby

07/25/25 12:16pm

When the car key runs out of power, you can replace the battery yourself or go to a 4S store for replacement. The price of replacing the key battery at a 4S store will be more expensive, so it is better to replace it yourself. The car key uses a button battery, which is available in general medium and large supermarkets. Remember to check the car key battery model before purchasing, which is usually written in the vehicle user manual. Precautions for using car keys are as follows: 1. Do not place the car key together with the phone: The car key uses low-intensity radio waves, so it may not work properly under magnetic interference. If placed together with the phone for a long time, the smart key may malfunction due to the phone's frequency. Also, avoid contact with strong magnetic fields, such as high-voltage lines, transmission towers, and other places with strong magnetic field signals, and try to avoid parking the vehicle there. 2. Do not drop the car key: Free-fall impact is a nightmare for most precision electronic products, and the smart key is no exception. Therefore, handle it with care and avoid dropping or bumping it.

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MackenzieAnn

08/11/25 8:15pm

Last time my key fob ran out of battery, it was such a hassle! I kept pressing the button to unlock the car door with no response, and had to resort to manual unlocking. Looking back, changing the battery myself was super easy—I just went to the convenience store and bought a CR2032 battery for 5 yuan. At home, I used a coin or small screwdriver to gently pry open the key fob along the edge, carefully removed the old battery, and inserted the new one, making sure to align the positive and negative sides correctly. After snapping the cover back on and testing it, the remote worked immediately. The whole process took just 10 minutes, saving me so much time and money compared to going to a repair shop. Now I keep a few spare batteries in my drawer to avoid getting locked out again. The key to DIY replacement is being gentle to avoid damaging the casing, and checking the manual for the correct battery model.

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