Front Seat Active Headrest Inspection
NOTE: If the vehicle has been in a collision, always inspect the active headrest, even if they appear reusable, by doing the following procedure.
Resetting Headrest Position
  1. Push the headrest (A) forward fully from the locked position to return the inside inertia lock (B).
  1. Slowly raise the headrest into the normal position.
Inspection
  1. Fold the seat-back forward, then recline the seat-back to the first lock position, and adjust the headrest to the highest position.
  1. Apply masking tape on the top of the headrest.
  1. Make marks (A) on both sides at 250 mm (9.84 in.) upward from the roots of the headrest frame (B) along the back of the headrest (C) surface. Make a center of these points as a datum point (D).
  1. Push the headrest (A) forward, and check: With a scale, measure the level amount of the headrest movement. The headrest should move than 50 mm (2.0 in.) without resistance. If it is less than 50 mm (2.0 in.), or the headrest doesn't move smoothly, replace the seat-back frame assembly: