Door comes apart super quick. Just do it!
https://www.s2ki.com/forums/s2000-ga...e-such-158388/

 

The manual lock switch has a piece that extends down to the metal rod that does that actual locking. That part is broken. Here's a pic from another user (forget who, sorry, but his thread is around here somewhere):


Unfortunately you can't buy just the switch, you have to buy the whole handle assembly.

 

a bit off topic but, it is kind of funny i had to replace this on my 95 civic hatch recently and its like the same exact mechanism. I wonder if it is literally the same piece it looks almost identical

 

As twohoos pointed out, the plastic piece of the lock mechanism that connects to the rod breaks off. I've broken this twice now on my car in 2 autocross seasons. I have a tendency to clutch my left knee against my door panel while cornering. I thought I broke the habit this past year but, again, have broken door locks. I looked for over a month to find a used one on ebay last time around. It seemed there were many passenger side door handles available though driver sides were few and far between. I had to order one from Australia and pay shipping. Anyways, try to be conscientious of holding yourself in place with your left leg while driving hard. I am 99% sure that is the culprit of the issue. I've been wondering if I was the only one to have this problem...

 

 

Also have a problem with my driver side lock... can someone help me figure it out?
Its with the inside lock button... when I push/pull to lock/unlock, it does not go all the way. I have to slightly lift the inside door handle while push/pulling the button and then it locks/unlocks as normal

 

Same thing for me! When I hit the remote lock, hear the noise of stuff actuating... but doesn't lock. I have to manually partial hold the inside latch plus switch the lock. Just pushing the lock inside minus pulling the handle doesn't work. I was looking to buy a new actuator to fix this. Sorry OP, don't mean to hijack this thread.
01 model with this issue

 

Probably either handle position or a bent actuator arm. The handle mounting holes are a little oversized to allow for fore/aft position adjustment (and maybe a little up/down, I forget). A bent actuator arm might no longer have the proper "reach" from the manual switch back to the actual door lock. Since they're reasonably thin, you might be able to "unbend"/re-shape it.

 

Know I'm late to the party but I've just found the fix for this issue after hours of tinkering. You need to take the outer door handle off and thread the rod attached to the door handle out till its flush with the part it screws into.

Test it for proper alignment when u put it back in by locking and unlocking the interior lock. Should lock and unlock freely.

I've broken countless interior plastic locks and had the same issues above. This fixed my issues.