Keep your vehicle protected against unauthorized key programming. KEYDIY KEY DEFENDER blocks new-key programming through the OBD port when protection is enabled, helping add another layer of security against vehicle theft. Its compact design, easy installation, and one-tap mobile app control make protection simple, while normal diagnostics and maintenance functions remain available.
Key Features
1. Block Unauthorized Key Programming: Prevent external devices from adding new keys through OBD while protection is enabled.
2. Control Security from Your Phone: Enable or disable protection through the mobile app whenever needed.
3. Keep Diagnostics Working: Restrict key programming without disabling normal diagnostic and maintenance functions.
4. Compact and Concealable: The 6 × 2 × 1 cm unit can be hidden out of sight after installation.
Easy Installation, Simple Control
1. Connect the Wiring. Download the companion app and connect the device to the vehicle power, ground, and CAN lines. Conceal the unit and wiring harness after installation.
2. Pair the Device. Open Device Management >> Bind Device >> Click to start scanning. Select the detected device, enter the default password 000000, and wait for pairing and binding to finish.
3. Secure Your Access. Change the default password to your own, then download the data for your vehicle model.
4. Activate Protection. Select Enable Protection >> Confirm. Once protection is enabled, external devices cannot program new keys through OBD. An attempted programming session may display “Receiving data exception (7F277F00)”.
5. Restore Key Programming When Needed. Disable protection through the app to allow normal OBD key programming again.
Get KEYDIY KEY DEFENDER
Price: £117(USD 150)
Add convenient, app-controlled protection against unauthorized OBD key programming. Contact your supplier for availability and supported vehicle models.
Technical Appendix
Product Specifications
| Item | Details |
| Product | KEYDIY KEY DEFENDER |
| Price | £117 (USD150) |
| Dimensions | 6 × 2 × 1 cm |
| Control | Mobile app |
Correct Wiring
| Wire Color | Connection |
| White | CAN-HIGH(CAN+) |
| Brown | CAN-LOW(CAN−) |
| Black | Ground(GND) |
| Red | Power positive(VCC) |
