I have a smelly odor in my cabin whenever I turn the engine on. As soon as the AC clicks or if I put it in recirculation the smell goes away.

I think I have mold in the air intake or the evaporator so I got a cleaner but it says I have to snake a tube up the evaporator drain tube and spray a foam up in there.

Only I have no idea where the drain tube ends. Is it accessible without having to take everything apart?

 

I do not know where it is on the XF but, on the XKs it comes out just above the transmission where you can not reach it. With the XKs that drain tube outlet would stick closed and cause water to flood the passenger foot well. Hope the same is not going to happen with the XFs. So far, I have not seen any indication to that effect.

 

When is the last time the cabin filter has been changed or at least inspected?
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That is the first thing I changed. It hadn't been changed since I bought it in 2011. But there was no smell and it looked to be just fine. I put a new one in anyway. But I still have that smell. I tried to spray Lysol into the base of the windshield where the air intake is and had the A/C blasted on full for about 10 minutes. Seemed to help slightly but I can still smell it.

Also tried a trick I read to blast the A/C on low for 10 minutes and then full heat for 10 minutes. That didn't do anything either.

 

I have the same issue. I think my car sat around for a while before being sold. It's not as bad if you leave the vents open and once the AC kicks in the smell goes away. If you leave the car running with the AC on you'll see water on the floor where the drain leaks out (unless it's clogged). I have the foamer as well just haven't gotten around to looking for the drain yet. If anyone has pictures though, that would be awesome.

 

Would it not give more access to the evaporator area through the cabin filter opening for spraying the product?

Edit: Just saw this video that answered my question. The answer is yes, you can put it through the cabin filter opening.