You remove it from the door and find exactly which part is broken,replace that part.
How to repair the rear door latches on my e 350 van. The bottom latch will not hold . How do I get the latch to hold Thanks
what is wrong with the door latch? will it not open/latch? what year is the vehicle? all of these are needed to answer your question.
left door latch is broke
How do you repair drivers side door latch mechanism on 98 GMC extended cab pickup?
To fix the 300m latch, you will need to remove the inner door panel. After the door panel has been removed, then you can check the door latch components to determine what has broken and how to best repair it.
What are you trying to repair on the door?
buy a new oneANS 2 - You can always adjust the strike plate OR the latch so they meet properly.
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.
put a new latch in If the car has been setting for a while I would start by spraying some wd40 on the latch mechanism ,if that don't help try adjusting the striker and the door alignment Get the door open, pull the panel, adjust latch manually to diagnose or if replacement is needed
power lok actuators are located on door latch don't understand repair?
You can find a front door latch assembly diagram, for your 1996, Mercury Cougar from the manufacturer website. Many auto-parts websites will have the diagram.