I have had the airbag SRS warning light on for over a year on my Z4 M Coupe.
I have read many posts on different social media websites about the cause of the airbag SRS warning light.
Including: problem with the airbags themselves, a loose wire, a faulty seat belt buckle, or a problem with the Engine Control Unit (ECU)
Very few sites mentioned, many times the airbag SRS warning light comes on after replacing the car battery.
I remembered that the airbag SRS warning light came around the time I installed a new battery.
I used a C110+ BMW Code Scanner to clear the airbag SRS code and turn off the airbag SRS warning light.
SRS warning light comes on after replacing the car battery.
The C110+ BMW Code Scanner cleared the code because there was nothing wrong with the air bags... disconnecting the battery caused the code and light.