Lonsdor officially released a major software update on January 9, 2026. Toyota Yaris (2021- ) 4A mechanical key all keys lost programming via OBD is supported by K518 Pro Full Version/FCV Version and other K518 series key programmers.
Key Features:
- Supports Toyota Yaris (2021–), 4A mechanical key
- Enables All Keys Lost programming directly via OBD
- Access under:
Immo & Remote-> Toyota-> Select from Vehicle-> Asia-> Yaris-> 2021- -> Mechanical Key (4A).
Before You Begin:
Activate the Yaris 4A software license to use this feature.
You will need a rolling code, available for purchase (US$15) from local dealer or third-party below:
- [toyotarollingcodes.com]
- [fleetkeysupply.com]
Vehicle Pre-Check Requirements:
- Dashboard lights are OFF.
- Center console display is completely blank (no key detected).
- Only Lonsdor K518 key programmer is connected to the OBD-II port. Remove any other diagnostic tools or data loggers.
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