It likely used 3M trim adhesive tape (foam core double sided PSA).
You could probably use some automotive urethane adhesive to re-attach, but you'd need to clean up the glue seam area and may not be able to pull it off again without damaging the panel or paint.

Cold temps is a problem, use heat gun or space heater if you can...

 

Shoe Goo. Give it a boot and it still holds, even down to -40 C/F intermittently.

There's double faced tape, by 3M and others, to do the job.

NAPA would have a glue product especially made for that application.

Tape: https://www.napaonline.com/en/p/MMM03609

Glue: https://www.napaonline.com/en/p/MMM03601

Permatex has something as well: https://www.amazon.ca/Permatex-81731-Super-Weatherstrip-Adhesive/dp/B000HBM3S4

 

I vote for 3M VHB tape. (VHB = Very High Bonding)

https://www.can-dotape.com/resources/vhb_uhb_aft_what_you_must_know/

When we took possession of our '02, an accident repair improperly completed resulted in the side moldings 'falling off', literally. We removed, cleaned, and reinstalled them with the 3M tape, and they have been perfect for 11 years now.

You can buy the 3M tape in many places, from auto body/parts supply houses to WalMart.:ThumbsUp:

 

ditto on the 3M. Buy the automotive version from a real auto parts store, not the cheaper and less sticky one that places like Home Depot sells.

 

Ok,
I went with the 3M tape.
Instructions said 65° (F) temp was required.
So I set up a propane space heater several feet away & was able to warm up the door & the loose panel.
I didn't pull the whole thing off, just put a block of wood down in between so that I could scrape off the old foam tape & clean up the surfaces with some acetone that I had laying about.
Cut the tape to size, stuck it on the door, pulled off the plastic strip, & pressed the panel into position.
It worked.
Just wish I would have caught the problem earlier as some paint has been scratched off the panel where it was rubbing each time the door was opened.....
Oh well, 12 year old car.
Thanks to those who responded with advice.

 

Great write up and thank you for the follow-up.

More than occasionally, we never hear back about what the final outcome was.

It is when the member takes the time to return and tell the world what worked and how it was done, that is when the community grows.

Let us know it it falls apart in the near future, or after a year or two, that it is still holding up great!
Cheers!:ThumbsUp:

 

Never rule out PL Premium. Met a construction work once that somebody on a construction PL Premiumed his sneakers to a concrete block. That stuff didn't let go.


http://www.lepage.ca/en/lepage-prod...age-products/construction-adhesive/pl-construction-adhesive/pl-premium-max.html