Functional Test - Seatbelt Retractor, Road Test Inspection

WARNING: This page is about a different car, the 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: : All safety belt components must be inspected and corrected as part of any collision repair. Inspect all safety belt components as prescribed by Safety Belt Inspection and Repair After a Collision found in General Procedures of this article. Failure to follow this instruction may result in incorrect operation of the safety belt system and increase the risk of serious personal injury or death in a crash.

NOTE: Make sure there is no excessive slack in the seatbelt webbing across the torso during testing.

NOTE: Do not jerk on the seatbelt webbing when carrying out this test.

Fasten the seatbelts and proceed to a safe area.
Reach a speed of 24 km/h (14.9 mph).
WARNING: Apply maximum brake force only on dry concrete or equivalent hard surface, never on wet pavement or gravel. Failure to follow this instruction may result in serious personal injury.

Grasp the shoulder harness, lean forward and apply the brakes, making a maximum braking application without a skid.
The seatbelts should lock up with minimum webbing extension.
If there is a lockup of all seatbelt retractors being tested, the seatbelt retractors are functioning correctly. If any seatbelt retractor fails to lock up, install a new seatbelt retractor(s).