Go to realoem and you can find out all part numbers and diagrams

 

I'm well aware of realoem, that's why I asked for a part number or picture. It's a little difficult to know which specific part he is referencing. The part number should be on his repair invoice.

 

Sure. I managed to find it on there.

 

Update: dealer replaced the hatch seal about a month ago. It has rained a lot since then and I have also tested the drains with a garden hose. There is no evidence of water leakage anywhere in the spare tire compartment or battery compartment. So hopefully their solution has fixed this problem.