I have a bottle in the boot of my Sharan. Any idea what is f

[piptop]

I have a bottle in the boot of my  sharan, in one the little side panels got no idea what it’s for. Can someone please help me and tell me what I put in it

[Volkswagen Owners Club]

Have you a photo of the bottle and usually has a symbol on the lid to signify the fluid

Also, what year and engine is the Sharan?