How do i reset the BMW vanos adaptation?

When You need to reset the BMW Vanos adaptation system then You will need to use a dealership level scan tool. Using a standard OBD II scan tool will not give You enough access to the computer system in Your car to reset the Vanos system. There are specialized tools that dealerships use that can get very expensive, but they are designed to control a lot of the more complex features in Your vehicle. The Vanos system is one of these, so either You will need to get access to one of the tools or visit a dealership or mechanic that owns one of them to reset the system and get it working properly again.