Janek

Also note that in the versions before and after the lift, the cruise control is connected differently. Additionally, there are various shifters for the non radar and radar versions but I don't know what are the differences in operation.

My IS 300h, according to the computer, burns about 5l / 100 km with very gentle driving in good conditions, with a gentle 6.5 l / 100 km, with a normal 8.5 l / 100 km, with a fast 10 l / 100 km. Apparently the computer's indications are underestimated.

I heard that the airbag can be detached, but the car cannot be turned on. This information is unconfirmed. Starting the car with the airbag disconnected results in errors.

Yes, but the airbag cannot be detached.

I always disconnect the battery. Here you can see how to remove the airbag: https://youtu.be/kC-6Rf90Aig?t=94