Read on another site, to simply lubricate the latch excessively with WD40 and then continue to open and close door handle until the latch releases and catches. I just tried this minutes ago with my Pontiac sunfire and sat in my car held the door closed and pulled the open & close door handle in and out until the latch caught. It worked great !! Now the door latch catchs without a problem. Apparently, some latchs just need to be lubricated quite often. Hope this helps. Added: WD40 is NOT a lubricant. You can use it to clean out the latch, but then have to put a lubricant after drying.
Is your chime continuing after cranking vehicle and door is closed. If so, there is an electrical switch in the door that gets stuck. Use a spray lubricant inside the door latch to free switch.
The switch inside the door is sticking- a common problem. Use some Brake cleaner Spray to clean the switch near the door latch at the door jamb. After cleaning it, spray some WD40 or similar lubricant on it. Ths usually fixes if for a few months and then do it again in about 6 months. The switch inside the door is sticking- a common problem. Use some Brake cleaner Spray to clean the switch near the door latch at the door jamb. After cleaning it, spray some WD40 or similar lubricant on it. Ths usually fixes if for a few months and then do it again in about 6 months.
Use a loose flowable lubricant like WD40 and lubricate the door half of the latch mechanism, use your hand to cycle it through a few times and it should start moving freely.
Just going by the question...I would say that the latch has gotten in "the closed door position". Be sure that the door is unlocked. With your finger lift out on the latch on the end of the door and use the door handle to "open" the door latch.
Pull the INSIDE handle as if you were going to open the door and then use a flat blade screwdriver ( or any screwdriver ) to move the latch sections apart
There are two sensors on the door of a Mercury Cougar; the first which controls the two stage interior lighting can be found on the forward portion of the door jamb it is a button. The second sensor is found the the door latch mechanism at the rear of the door jamb. It is problematic at best. Use some wd40 to clean it really spray it well. Then use a lubricant spray; silicon spray works the best. Really saturate it well. You will probably have to do this annually. There are two sensors on the door of a Mercury Cougar; the first which controls the two stage interior lighting can be found on the forward portion of the door jamb it is a button. The second sensor is found the the door latch mechanism at the rear of the door jamb. It is problematic at best. Use some wd40 to clean it really spray it well. Then use a lubricant spray; silicon spray works the best. Really saturate it well. You will probably have to do this annually. There are two sensors on the door of a Mercury Cougar; the first which controls the two stage interior lighting can be found on the forward portion of the door jamb it is a button. The second sensor is found the the door latch mechanism at the rear of the door jamb. It is problematic at best. Use some wd40 to clean it really spray it well. Then use a lubricant spray; silicon spray works the best. Really saturate it well. You will probably have to do this annually.
Often the latch has been closed and the door won't catch until the latch is popped back. Use a screwdriver or other tool, make sure the door is unlocked then operate the inside door handle and open the latch lever with the screwdriver.
you have to use a lubricant based oil and not a petrol based oil
Pull the handle,either inside or out, with the door unlocked. Then use a screwdriver or other implement to pull the jaws of the latch assembly back open. Don't use your fingers since those things are strong and if the kick back it can cut or bruise you. It's also pretty oily/dirty in there. If the latch is truly broken, you'll need to disassemble the door and replace the latch assembly.
Remove the screws on the inside door panel, use a screwdriver to activate the latch. If that can't be done, the lock can be drilled out and the linkage activated.
WD40 its a lubricant you can buy at any hardware store