[colson79]

BMW should be on the hook for this unless they can prove the maintenance was not performed. Despite what dealers like you to think, you don't have to have your vehicle serviced by them to maintain the warranty. You can perform the maintenance yourself if you want too as long as you follow the service intervals and use the correct filters and oil. Obviously you should keep records to make it easier but in most states the manufacture is on the hook for proving the maintenance wasn't followed when denying the warranty.