I jacked up the car today and remove the underbody covers to get to the tpm central antenna which is between the water pipes in the middle of the car. When I crawled out from under the car I saw the attached on the floor.





It's part number 99970347641 and is called a cowl panel grommet.

A clue might be that when I jacked the car, a hose pointed down on the pass side near the front lift point was pushed in about 1/4" due to the placement of the quickjack.

Any idea of where it goes?

Thanks
Myron

 

I dont have the PET in front of me, but that looks like a cowl drain hole grommet.. Possibly one of the drains near the battery tray.

 

Just leave it out. Too much crap gets stuck in those and doesn’t drain.

 

I think the hose you are seeing is the air con condenser hose - it's supposed to hang down slightly below the floor pan.
Looks like your part goes up in the trim panels around the frunk - No 6 in the diagram....

 

Not sure that diagram is the most helpful though......

 

I will look at it tomorrow. As I understand it, there should be 3 of these in the upper frunk area. Will see if I have all three. If so, I wonder if the part that I found had spent years just sitting on top of the belly pan.

 

2009 C2S 167K miles

That is a drain plug used around the battery compartment. I think there are four of them. Rob is right, they clog constantly.... leaves etc get washed in there, turn to gunk, and you end up with a swimming pool of water around your battery. To clear, just ram your finger into the bung and let 'er flow.

Peace
Bruce in Philly

 

I found 3 holes without grommets. I probably did not look hard enough for the 4 th.

 

The water drains -1-and -2- can be found on both sides of the vehicle (only vehicles with sliding roof).

1 - Water drain: rear of sliding roof
2 - Water drain: front of sliding roof
3 - Water drain: tank tray
4 - Water drain: plenum panel
5 - Water drain: plenum panel (vehicles without luggage compartment ventilation)

 

I found #3 on the pass side, and two of the #4's on the drivers side. Where is the third number 4 which appears to be in the middle? Do I need to remove the battery and is it under that?

 

There are two on the left, and two on the right of the battery tray... just look, they are there.

Peace
Bruce in Philly

 

You are right. I found all 4. Thanks everyone.

 

I’m having real trouble not saying something wildly inappropriate here.