So... Hi!  Previous owner of my Octavia had done a wonderfull job fixing the wiring loom at driver side...  Now the airbag light is on and I gotta solder those wires properly.  BUT I can't seem to figure how to open that yellow connector?  I need to unplug it so I get more room to do the job properly. 

And yes I did solder the wires under the seat.  After looking at fault codes it seems to be impact sensor (in the door)  related.  Code 01221.  Then I looked under the rubber boot and found this . 

Did you get that problem fixed? I have 04C5 impact sensor left side fault code. Found out that yellow wire on door have been cut. Connected it but haven't cleared those codes.

Yes! Soldered all the wires properly together and and shielded them with heatshrink. After that went to our mechanic who cleared the codes. It's been trouble free from since! 

 

Nice to hear! Thanks.