KEYDIY Key Defender HKSK521 OBD Key Programming Blocker for Toyota, Honda, BMW, Mercedes – Toggle ON/OFF via App

KEYDIY Key Defender

Product Features

Blocks new vehicle key adding via OBD without authorization.

Only Key Programming is disabled; full diagnostic and maintenance functions remain fully operational.

Toggle protection ON/OFF anytime via mobile app — supports lifetime free OTA updates.

Package Includes

• 1pc x KEYDIY Key Defender Host
• 1pc x Connecting Cable

Compatibility & Important Notes

Compatible only with vehicles supporting OBD-based Key Programming. Sensor not included — purchase required separately if needed. Before buying, confirm compatibility with your vehicle make, model, year, and ECU type. Not compatible with all models — verify supported protocols via KEYDIY official documentation.

Legal & Usage Disclaimer

This device is intended for professional automotive use only. Buyers are solely responsible for ensuring compliance with local laws, vehicle manufacturer terms, and data privacy regulations. Use constitutes acceptance of full legal liability for any misuse, unauthorized access, or violation of vehicle security systems. Always follow KEYDIY’s official guidelines and firmware update instructions. Manufacturer disclaims all liability for damage, loss, or illegal application arising from improper installation or operation.