Missing centre seatbelt buckle in S4

[marctwo]

A few months ago I had ISOFIX retrofitted into the back of my S4. Now I can't find the buckle that you clip the centre seatbelt into. The one for the outer belt is there but the one of the centre is missing.

I assume it is either folded under the seat somewhere or removed as part of the ISOFIX fittment.

Does anyone know if you are allowed to use the centre belt with 2 child seats fitted?

Also how can I lift up the rear seats to check for the missing buckle?

[Silverbullet767]

Not sure on the S4, but on my old A4 (b5) it simply lifted off, from front to back. It's on with 2 or 3 metal clips.

[marctwo]

So if I just lift it I am not going to break anything?

[matts4]

grab it at the centre, at the front and give it a good pull upwards.

Probably best to stand with a foot in each footwell, with your back towards the rear window if that makes sense?

[marctwo]

Thanks. I'll give it a go.