Hi, In my WV Multivan there is a eberspächer hydronic d3wz . Can I use thise item to heat up the car for parking, and camping, or is this item ment to heat up the engine before start? (I cant find any written about this )

Hello and thank you for your question. If the heater was installed when the vehicle was manufactured it was probably for engine pre-heating and cabin heating. Whether you can use this for camping or parking would depend on the installation. For more information you could contact your local VW dealer. They should be able to provide you with the information you need. Best regards, Michael