Some 2016-2018 F-150 vehicles may exhibit a steering drift, pull, and/or wander. To diagnose these conditions refer to Pinpoint Test (PPT) H - Steering System Pull, Drift, Wander or Steering Wheel is Off Center in Workshop Manual (WSM) Section, 211-00. Do not use PPT I - Poor Returnability Sticky Steering or Binding to diagnose drift, pull, and/or wander symptoms. These Pinpoint Tests are in the process of being updated.