Xhorse vvdi 8A adapter kit works perfectly on Toyota RAV4 2015 (with H chip, none-smart key) when all keys lost. This procedure works with other Toyota 8A chip as well, i,e a Toyota Hilux 2018. The vvdi 8A cable kit works until 2019 in normal key.
You need to modify the connector that goes to the coil plug because some are different.
(Other cables that connected where the relay goes are included in the xhorse 8A cable kit. This is for standard 8A turn keys, no smart key)
Disconnect positive terminal
Relay in Passenger side fuse box
Plug in the VVDI J3 Relay
Plug the J5 pLug into the reader harness
Connect J4 obd plug with vehicle via OBD socket
Connect vvdi 8A cable with J6 plug
Then connect Xhorse Mini OBD Tool with 8A adapter
Connect power supply cables
Connect xhorse key tool max with the mini OBD via Bluetooth
Select 8A Immo box all key lost- OBD make master key
Put a VVDI super chip into key tool max, prepare to make master key which can start car directly
Calculate online and generate master key success