Remove the door panel, find and repair the lock linkgage.
Depending on the year, make, and model of the car...but generally, you have to remove the inside door panel and there is usually some form of linkage attached to the lock, and a clip of some sort securing the lock cylinder to the inside of the door.
if the door does not latch somtimes the latch has locked lift the door handle and pull latch open
when you lock a car door it can not be opened from the outside, ( unless it is picked ), when you double lock it you can not open the door from the inside in the event of someone breaking a window to gain entry.
It depends on what the indicators are. Usually lubricating the lock with spray lubricant like Triflow or WD40 work. Never use graphite in locks as it tends to get clogged in the springs. If the lock is difficult to turn after this, then there might be a linkage problem which would require removing the door panel and finding the bind or other issue.
there is a retaining nut or clip on the back of the lock that holds it in place. remove the door panel and see what is broke or if the nut has loosened,and fell off. check the bottom of the door. It may be there waiting there to be found. hope it helps. duboff
Can you give us a bit more info? Do they lock from inside the car OK? Do they lock from your key fob? Inquiring minds ...... FriPilot
If the door is open and the light is on or is flashing chances are you have a bad door lock accuator . the sensor in the door lock mechanisim is not seeing the door opened or closed . so the car's alarm thinks the car is being stolen . Replace the door lock accuator mechanism .
The question you ask is too involved for a proper answer. You need to go to a car parts store, and get a repair manual for your car. They cost about $16.00 Or, go to a Public Library.
That would depend on several factors. The location of the lock and what need to be done. Is the problem the lock itself or the linkage connected to the lock ( as in a car door that was improperly opened with a slim Jim or coat hanger). The charges would depend on what parts need to be replaced, if any and the labor involved. Call your local locksmith and get an estimate.
You'll need a professional locksmith to open the lock without damaging the lock and door .
The lock on the top of the drivers door acts as the power lock switch for the crv, open (up) and close (down) while in the car. To lock all doors from outside the car hold open inside door handle and push down lock on top of door. All doors should lock. Close door.