Introduction
This manual provides detailed instructions for the KEYDIY Universal KD Remote Car Key (models B12-3, B12-4, NB12-3, NB12-4). These universal remote keys are designed to be programmed using KEYDIY devices such as KD900, KD900+, URG200, and KD-X2, allowing locksmiths to generate a wide range of car keys from a single universal remote. Each remote key includes a circuit board but requires a separate transponder chip, battery, and specific blade type to function with a vehicle.
Setup and Programming
The KEYDIY Universal KD Remote Key is supplied as a circuit board within a remote shell. It does not include a transponder chip, battery, or key blade, which must be acquired separately and installed as needed for specific vehicle applications.
- Prepare Components: Ensure you have the universal KD remote key (circuit board and shell), the appropriate transponder chip for the target vehicle, a CR2032 battery, and the correct key blade.
- Install Battery: Open the remote key shell to access the battery compartment. Insert a CR2032 battery, ensuring correct polarity.
- Install Key Blade: If applicable, insert the chosen key blade into the designated slot in the remote shell.
- Assemble Remote: Carefully close the remote key shell, ensuring all components are securely in place.
- Programming:
- Connect your KEYDIY programming device (KD900, KD900+, URG200, or KD-X2) to a power source and turn it on.
- Follow the device's instructions to select the desired vehicle make, model, and year.
- Place the universal KD remote key into the programming slot or area of your KEYDIY device.
- Initiate the programming process as guided by your device. The device will write the necessary data to the remote key's circuit board.
- Once programmed, the remote key will function as a specific vehicle's remote.


Operating Instructions
After successful programming, your universal KD remote key will function like an original equipment manufacturer (OEM) remote for the specific vehicle it was programmed for. The remote features 3 buttons for common functions.
- Lock Button: Press once to lock all vehicle doors.
- Unlock Button: Press once to unlock the driver's door, or twice to unlock all doors (may vary by vehicle programming).
- Trunk/Panic Button: This button typically controls the trunk release or activates a panic alarm, depending on the vehicle's original remote functionality and programming.

Maintenance
To ensure the longevity and proper functioning of your remote key, follow these maintenance guidelines:
- Battery Replacement: When the remote's range decreases or it stops responding, the battery may need replacement. Open the remote shell (refer to Setup instructions) and replace the CR2032 battery with a new one, observing polarity.
- Cleaning: Use a soft, dry cloth to clean the exterior of the remote. Avoid using harsh chemicals or abrasive materials.
- Protection: Keep the remote away from water, extreme temperatures, direct sunlight, and strong magnetic fields. Avoid dropping the remote or subjecting it to strong impacts.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Remote not responding after programming. | Incorrect programming, dead/low battery, faulty circuit board. | Re-attempt programming with the KD device. Check and replace the battery. Ensure the circuit board is correctly seated. |
| Reduced operating range. | Low battery, environmental interference. | Replace the battery. Test in a different location away from potential interference. |
| Buttons are stiff or unresponsive. | Debris under buttons, physical damage. | Carefully clean around the buttons. If damaged, consider replacing the remote shell or the entire unit. |
Specifications
| Feature | Detail |
|---|---|
| Brand Name | Wilongda |
| Model Numbers | B12-3, B12-4, NB12-3, NB12-4 |
| R/C Function | With |
| Customization | No (Universal, programmed by KD device) |
| Origin | Mainland China |
| Material | Plastic + Metal |
| Name | NB Series Remote Key |
| Buttons | 3 buttons |
| Color | Black |
| Condition | 100% Brand New |
| Transponder Chip | Not included (Requires separate purchase) |
| Battery | Not included (Requires CR2032, separate purchase) |
| Key Blade | Not included (Requires separate purchase) |
| Programming Device | KD900, KD900+, URG200, KD-X2 |
| Package Quantity | 5 pieces per lot |
| Package Dimensions (L x W x H) | 12 cm x 12 cm x 12 cm |
| Package Weight | 0.3 kg |
User Tips
- Locksmith Advantage: These universal KD remotes are ideal for locksmiths as they reduce the need to stock numerous specific remote keys. A single KD remote can be programmed to emulate many different car keys.
- Complete Kit Required: Remember that the remote key comes with the circuit board but requires a separate transponder chip, battery (CR2032), and the correct key blade for full functionality. These are not included in the package.
- Programming is Essential: The remote key will not function out of the box. It must be programmed using a compatible KEYDIY device (KD900, KD900+, URG200, or KD-X2) to match a specific vehicle.
Warranty and Support
This product is provided as 100% Brand New and of high quality. For any issues related to manufacturing defects or performance, please contact the seller directly for support and assistance. The product is eligible for free returns within 90 days of purchase, as per seller policy.





