Have you tried the head gasket issues listed in the aforementioned post? When you say white smoke, is it coming from the exhaust?
If it is determine the head gasket is bad after testing, the only thing you can do is replace the gasket.
I have to be honest, this vehicle isn't offered in the US, so I have little to no technical info. I'm trying to help determine if the head gasket could be the issue. Also, check the engine coolant level to see if it is low as well as the other checks in the link.
Let me know what you find.
Joe
Wednesday, November 13th, 2019 AT 6:18 PM