Briefly SRS light on

[m2mb]

Today on a trip I decided to leave the mobile phone plugged to a rather heavy powerbank (no usb charger in the car and cig charger broke a few days ago).
I placed the phone and powerbank on the front passenger seat. Then noticed that the airbag light on the centre console (on the cd changer cover) stayed on, then the srs light and dash message "srs inoperative" appeared for a few seconds and then disappeared, everything back to normal, probably when I lifted the phone+pbank from the seat.

So what should the question be here? Get the car on star again?

 

[AMGeed]

I am guessing the SRS recognised a weight was placed on the seat and was expecting the seat belt to be fastened.
If it happens again I'd get the seat belt buckle checked.

 

[m2mb]

The car manual (for the w211) says, in the troubleshooting section, to remove all devices with transponders from the seat and if the light remains lit then to check further.
Fortunately the light is still off!!!