I am afraid that the claim is correct.However, it's claimed that an(other) overhead controller is still needed --> Webasto Auxiliary Heater - customizing which I find a kind of strange because the overhead controller is not wired to Webasto but 08-HVAC.
While with the firmware mod you can run the Webasto out of a Telestart and/or a panel, you still need to run the van fans. And there comes the 08-HVAC and a suitable panel.







