Only get works with Model 3 Highland...?

[Gr1pen]

On my new Model 3 Highland I'm only able to Get data from the vehicle, not Set/Write. Just like it's read only... When trying to "Set", the node says "Forbidden".

For example I get read all the Vehicle data, but I cannot start/sto charging, flash lights, hunk horn etc.
Have I missed something or is this a limitation or bug?

On my older Model 3 (2019) both Get and Set works perfectly fine.