Example methods, apparatus, and articles of manufacture to trigger preemptive maintenance of vectored digital subscriber line (DSL) systems are disclosed. An example method includes generating a trouble ticket for a first subscriber loop based on a result of a diagnostic test, the diagnostic test being performed on the first subscriber loop when a value representing crosstalk coupling between the first subscriber loop and a second subscriber loop exceeds a threshold. The first subscriber loop and the second subscriber loop belong to a vectored group of subscriber loops contained in a same cable binder. The example method includes submitting the trouble ticket.