What does the airbag warning light look like? Sensors within the system will detect if, and which airbags need to be deployed, based on the direction and severity of an impact so it is important that the SRS is functioning correctly in your vehicle. The supplement Restraint System (SRS) in vehicles, links the airbag system to the seat belt system. What is the supplement Restraint System (SRS)? Unfamiliar we dashboard warning lights? We have a helpful guide to dashboard warning lights. However, it is important to get any warning light checked out - but particularly so if it's the airbag - supplement Restraint System SRS light on the dash. Not every driver acts when they see a dashboard warning light come on.