Joining a class action lawsuit usually requires getting in touch with the law firm that's handling the case. You can typically find information about ongoing class action lawsuits against Ford, including those related to the Ecoboost engine, through a simple online search. The law firm's website should have instructions on how to join, which might involve filling out a form or contacting them directly. However, in some cases, if you are an affected owner, you may be automatically included in the lawsuit and would be notified accordingly.