Xhorse vvdi key tool plus is all in one key programming tool, here is the step about Xhorse VVDI Key Tool Plus BYD Key Programming Process.

1. Add new BYD key
- VVDI Key Tool Plus tablet, go to Vehicle Remote > BYD. Use Xhorse VVDI smart universal key to generate a key with the same appearance and frequency as the original key. Once generated successfully, set it aside for later use.
- Then choose Transponder Clone > 46 Online Calculation > Start Clone > One-click Write BYD. Place the original key into the device’s coil to read the key data.
- Once the original key is successfully recognized, remove its battery. Place the device coil near the vehicle’s start button area, and use the original key to start the vehicle in emergency mode. The device will begin collecting data — a total of 8 sets are needed. Each time you press the vehicle’s start button with the original key, one set of data is collected.
- After collecting 8 data sets, the device will automatically upload and process the data. Once the calculation is successful, click Query. Then place the pre-generated universal key from step 1 into the device coil to write the data. After successful writing, use the matching device to pair the new key. Choose Aftermarket Key Matching to complete password-free pairing.
- After successful matching, the new key will support emergency start, remote control, and smart key functions.


2. BYD All-Key-Lost Operation Process
- Use the smart key to generate the BYD All-Key-Lost Collector V1. The smart key must have a battery installed. (In rare cases, the V2 option may be required.)
- Go to Transponder Clone > Identify to identify the collector as “D” and take note of the result. Then press the trunk button on the collector once (only press it once). The LED light on the collector will flash — this is normal.
- Next, use the collector to press the vehicle’s start button. The LED will turn off, indicating successful initialization. Then identify the collector again using Transponder Clone > Identify. The newly identified “D” value must be different from the one in Step 2. If it’s the same, restart the entire process from Step 1.
- Place the collector into the device’s coil. Go to Transponder Clone > Clone > 46 Online Calculation > Start Clone > BYD All Key Lost.
- Follow the device prompts. Use the collector to press the vehicle’s start button to collect 8 sets of data. You can use Special Clone Remote Collection mode — press the start button once with the collector to gather one set of data (repeat until all 8 are collected). After collection, place the collector back into the coil, and the device will begin calculating. Once successful, follow the on-screen instructions to write the data.
Note: When collecting data, firmly press the vehicle’s start button using the collector once per second. The device will indicate each successful data group collected. Repeat until all 8 sets are completed. - After successful data writing, the collector can be used to emergency start the vehicle. Once the vehicle is started, follow the Aftermarket Key Addition Process to match a new key. After successful pairing, the collector will have both remote and smart functions.
- 200 bonus points will be deducted for each successful data calculation.