Depending upon the specific casement window the latch is mounted on the inside of the stationary side of the window/window frame. Some are riveted, some are secured by screws, if it is the later then you can remove the screws and loosen the latch (there may be several layers of paint, scratch away at the paint to see if it is either a screw/bolt head or a rivet.) See the links for a company, I like, for spare window parts.....
To fix a trunk latch that is stuck open, the teeth on the lock may have to be adjusted so the trunk will close. It is also possible that the cable for the trunk latch is broken. To fix the gas cap door latch may require a little bending and adjusting with a pair of pliers.
The back hatch will often not open if the internal mechanism or release has become damaged. Replacing the latch is the most effective and reliable fix.
lift door handle, using screwdriver, move latch forward....will open
When trunks get older, sometimes the latches get stuck. To fix them a person needs to add oil to the latch to loosen up the parts of the lock and turn the key hard.
To fix the door latch on a 2002 Jaguar X-Type that won’t open, start by removing the interior door panel to access the latch mechanism. Inspect the latch for any visible obstructions or broken components; lubricate the latch with a suitable lubricant if it's stuck. If the latch is damaged, it may need to be replaced. Reassemble the door panel once the repair is complete, ensuring all components are properly aligned.
pull the door handle on the outside and open the latch by hand both at the same time
Mine does that if the window is barley open!
to open, use WD40...or a crowbar You will more than likely have to remove the inside door panel to get to the latch mechanism and find the problem of the latch does not work. No crowbar!!!!
Replace the door latch.
Take it to a body shop. They have to open hoods when jammed in wrecks.
To fix the latch on the fuel door of your Cadillac Eldorado, first, ensure the fuel door is not stuck due to debris or rust. If it still won't open, check the latch mechanism for any obstructions or damage. You may need to access the latch by removing the inner panel near the fuel door. If the latch is broken, consider replacing it with a new one from an auto parts store or dealership.
remove enter door panel. check the latch rod from handle to keeper spring latch (lock). either bent or detached. end.