Airbag warning light
Seated passenger with a round airbag in front, or the letters SRS
The car drives perfectly normally, which is exactly why this light gets ignored. It means the system has found a fault, and one or more airbags or seat belt pretensioners may not deploy in a crash.
Owner's manuals treat it as a get-it-inspected-as-soon-as-possible light rather than a pull-over light, while some service chains advise not driving the car at all until it is checked. Either way, do not put it off. The light should come on for a few seconds at startup and then go out; one that never lights at startup needs checking too, because the system cannot warn you.
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