How to Replace the Key Battery for BYD?
4 Answers
The method to replace the key battery for BYD is as follows: 1. Remove the mechanical key; 2. Along the slot where the mechanical key is stored, forcefully pry open the key's outer shell; 3. Use a blade to remove the battery from the edge gap; 4. After installing the new battery, reassemble the key shell. Taking the BYD S6 as an example, it is a mid-size SUV with body dimensions of: length 4810 mm, width 1855 mm, height 1680 mm, a wheelbase of 2720 mm, and a fuel tank capacity of 72 liters. The BYD S6 is equipped with a 1.5L turbocharged engine, delivering a maximum power of 113 kW at 5200 rpm, paired with a 6-speed manual transmission.
I bought a BYD Song PRO and noticed that when the remote key response slows down, it's time to replace the battery. The first time doing it was a bit nerve-wracking, as I was afraid of damaging the key shell. I looked up tutorials online and found that most BYD keys have a small groove on the back—just gently pry it open with a coin or a flat-head screwdriver. Be careful not to use too much force, or the plastic shell might crack. After removing the old battery, I saw it was a CR2032, a 3V coin cell battery, which can be easily bought at supermarkets or online. When installing the new battery, make sure the positive side faces up and align it with the position of the old one. Snap the cover back on until you hear a click, indicating it's securely locked. Test the lock and unlock functions, and they should immediately return to normal. The whole process takes less than five minutes—cost-effective and convenient. I recommend all car owners regularly check their keys; a shortened remote range is a warning sign—replace the battery early to avoid mid-use failures.
As a car enthusiast who loves tinkering, I've made replacing BYD key fob batteries a routine. The key designs are similar, with back covers usually secured by clips or screws. The tools needed are simple—a small Phillips screwdriver will do the job; if you don't have one, a fingernail or a hard card can work, just be careful not to scratch the surface. The common battery models are CR2025 or CR2032—make sure to buy the correct voltage. After opening the cover, remove the old battery while wearing gloves to prevent oil contamination, and avoid touching the circuit board. When inserting the new battery, ensure the positive side (marked) faces up for proper function—it won't work if reversed. After reassembling the cover, test the range—usually, it's fine if it works within 10 meters. A friendly reminder: buying batteries online is cost-effective, often just a dollar, saving you the expense of a dealership visit. DIY enthusiasts should give it a try—the fun lies in the hands-on process.
When replacing the BYD key battery, I went straight to the point: there's a small groove on the back of the key, just pry it open with a thin tool. Take out the old battery and note the model, commonly CR2032. Buy the same new battery, making sure not to reverse the positive side. Reassemble the case and test the functions. The whole process is simple, done within a minute, saving repair costs. A reminder: if the key is old, check first if it supports battery replacement; BYD smart keys might differ but follow similar steps. Be careful not to force open fragile plastic.
