1. Identify the engine: The cam type depends on the engine model installed in your specific X5. You can find the engine code on your vehicle's identification plate (VIN sticker).
2. Consult a repair manual or online resources: Once you know the engine code, you can use repair manuals, online forums, or car parts websites to find information about the cam type.
3. Contact a BMW dealership or mechanic: If you cannot find the information yourself, you can contact a BMW dealership or a qualified mechanic who can access technical information about the specific model.
Please note that there were multiple engine options available for the 2009 BMW X5, so the cam type will vary depending on your particular model.