What is this part for?

[dennismo]

Good evening all! Just a quick one - I today saw a part that was loose on my factory Kombi sliding window:

Which was originally here:

Unfortunately, when I tried to push the plastic bit back into place when I noticed it, it fell down here:
...and I couldn’t retrieve it.

Question. Any tips on how to get at it where it’s dropped down to? If I can’t get it back - is it important? Do I need to replace it?

Thanks as always!

 

[Minimucks]

Not sure how best to retrieve it but its just a blanking piece. If you had a plastic door panel with upper surround (like caravelle/shuttle) it's where the clips would locate.

Is it possible it's fallen through to the bottom of the door? Pop the kombi board panel off and take a look. If not they're probably only a few quid from VW parts or TPS.