A Klasse airbag warning light issue

I had a similar issue with my A Klasse. The restraint system warning light illuminated intermittently, then stayed on permanently. It could be a faulty connection, as you suspect. Have you tried checking the plug connections under the seats? They can sometimes become loose.

Under the seats, really? I'll check, but is it safe to just start poking around with airbag wires? I don't want to accidentally set the airbag off! Is there anything specific to look for or be careful of?

I understand your concern; however, I would strongly advise against attempting any repairs yourself, especially with the airbag system. It's best to have it properly diagnosed and repaired to avoid potential injury. In my case, it was indeed a connector issue, and the workshop fixed it quickly. I would recommend taking your A Klasse to a qualified technician.

Thanks so much! I took your advice and brought it to a workshop. Turns out you were spot on, a faulty connector after all. Cost me 95€, which is a relief. I seriously appreciate the help!