BMW SRS module 5 Series  E39 Temic SRS Side Airbag Control Unit part no 316919789010

SRS stands for supplemental restraint system, which relates to your vehicle’s airbags. Related: What’s in a Name? For High-Tech Safety Features in Cars, a Lot of Confusion. If the SRS light illuminates while you are driving, it signals there’s an issue with the car’s airbag system