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Home >> BMW >> 2015 >> 528i >> Repair and Diagnosis (Single Page) >> General Information >> OEM General Information >> Functional Description - F10 - HVAC System, Steering System, Restraints System >> Restraints System - Functional Description >> Crash safety >> Seat position sensor (US version)

Seat position sensor (US version)

According to the regulations of the FMVSS (Federal Motor Vehicle Safety Standard), a 5th percentile woman must be distinguished from a 50th percentile man on the driver's seat. The seating position sensor detects the airbag range designed for a person with regard to the seat adjustment in longitudinal direction.

The seating position sensor is a Hall sensor and it is supplied with voltage via the Crash Safety Module.

The signal of the seating position sensor also influences the delayed triggering of stage 2 of the inflator assembly (driver's airbag and front passenger airbag) as well as the ignition squib for opening the discharge hole.

If the vehicle is equipped with a memory seat, the seat-position sensor is omitted.