The airbag (SRS) warning could possibly be the connector under the seat for seat belt pre-tensioner.
The connections in the block connector start to play up, it's usually the drivers seat as it's the one most often adjusted back and forth.
My other car does it, move the seat with the ignition on and it lights the warning lamp.
The SRS light usually won't self clear, so it's trial and error turning the light off, fiddling this the connector in hope it won't come back on!
French Car Forum • View topic - How To: Seatbelt Pre-Tensioner Connector Repair
I'm not sure the SRS system does, can or will light the engine management light, did you friend not try turning this and the SRS one off??
The connections in the block connector start to play up, it's usually the drivers seat as it's the one most often adjusted back and forth.
My other car does it, move the seat with the ignition on and it lights the warning lamp.
The SRS light usually won't self clear, so it's trial and error turning the light off, fiddling this the connector in hope it won't come back on!
French Car Forum • View topic - How To: Seatbelt Pre-Tensioner Connector Repair
I'm not sure the SRS system does, can or will light the engine management light, did you friend not try turning this and the SRS one off??