TechnicianVision · Knowledge base
What’s In A Seat: Occupant Classification System (OCS)
I-CAR · October 21, 2019
Summary
This article highlights the complexity of modern automotive seats, focusing on the Occupant Classification System (OCS) and its integration with the Supplemental Restraint System (SRS). It emphasizes that OCS components like weight sensors, seat position sensors, and control modules may require replacement or calibration after a collision, or even after simple seat removal.
What to do on the job
Always refer to the vehicle-specific service manual to determine if OCS calibration or component replacement is required after a collision or whenever a seat is removed or replaced.
How to use it
Use this document to justify the labor time and necessity for OCS calibration, scanning, and diagnostics on estimates and supplements. It serves as authoritative industry proof that simply removing and reinstalling a seat, or performing repairs near seat sensors, triggers mandatory OEM calibration procedures to ensure passenger airbag safety.
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