LC200 locked with dead battery?

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Easiest (preventative) solution seems to be test your metal key once a month or so. I am guessing most don't work because either it's a replacement fob and the key was never cut properly or they never get used and lock gets jammed up with years worth of dust, dirt, grime and whatever else. Spray some WD40 or similar in there to keep the mechanism moving.

The original poster said that the key turned the lock normally. So it’s not an issue of the lock being jammed up or the key not being cut.
 
Now I’m very curious. When I have some free time today I’m going to pop the hood, close the latch with a screwdriver, lock the cruiser, disconnect battery and try to unlock the door cylinder. Technically it should work just fine, that’s why the lock cylinder is there.
 
Now I’m very curious. When I have some free time today I’m going to pop the hood, close the latch with a screwdriver, lock the cruiser, disconnect battery and try to unlock the door cylinder. Technically it should work just fine, that’s why the lock cylinder is there.
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Easiest (preventative) solution seems to be test your metal key once a month or so. I am guessing most don't work because either it's a replacement fob and the key was never cut properly or they never get used and lock gets jammed up with years worth of dust, dirt, grime and whatever else. Spray some WD40 or similar in there to keep the mechanism moving.

Not in my case.. metal key APPEARED to work 100% fine, had full throw in the cylinders in both directions.

But when truck bat was dead dead it wouldn’t unlock
 
Now I’m very curious. When I have some free time today I’m going to pop the hood, close the latch with a screwdriver, lock the cruiser, disconnect battery and try to unlock the door cylinder. Technically it should work just fine, that’s why the lock cylinder is there.

Someone above did this and it opened the doors

I’m thinking their was residual power floating around

Maybe leave the battery disconnected for as long as ya can realistically and check it?
 
Now I’m very curious. When I have some free time today I’m going to pop the hood, close the latch with a screwdriver, lock the cruiser, disconnect battery and try to unlock the door cylinder. Technically it should work just fine, that’s why the lock cylinder is there.
When you do that, make sure the fob is out of range.
 
I am not an expert at all but what would the point of a mechanical key (and assuming a mechanical lock) be if power, any power at all was need to operate it. I would think it would and should be a purely mechanical function, like the hood release. Otherwise what would point of the mechanical key be?
 
When this happened to me, I back fed power through the 7 pin trailer plug to wake the truck up.
 
I am not an expert at all but what would the point of a mechanical key (and assuming a mechanical lock) be if power, any power at all was need to operate it. I would think it would and should be a purely mechanical function, like the hood release. Otherwise what would point of the mechanical key be?
In my experience, a total loss of power = manual locks do not work.
 
Did your manual key not work?
No, but I don't know if that is my fault. I assumed it was because I replaced the actuator several years ago. I always thought that I didn't connect something correctly.
 
No, but I don't know if that is my fault. I assumed it was because I replaced the actuator several years ago. I always thought that I didn't connect something correctly.

Same here.. but it worked fine for me once I put new battery in truck
 
I'm hopeful (but not necessarily optmistic) that there's a missing detail here. If the manual locks indeed will not open the door without some sort of residual current in the system, to me that's a BIG design flaw. Big enough to make me question all the heritage and "attention to detail" toyota has been known for in the LC name. I'm not smart enough to figure out whether or not mine will work without current, but know I'm going to cycle the manual mechanism soon enough.
 
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Amazon sells a 7 pin jumper cable
 
I'm hopeful (but not necessarily optmistic) that there's a missing detail here. If the manual locks indeed will not open the door without some sort of residual current in the system, to me that's a BIG design flaw. Big enough to make me question all the heritage and "attention to detail" toyota has been known for in the LC name. I'm not smart enough to figure out whether or not mine will work without current, but know I'm going to cycle the manual mechanism soon enough.
something is definitely odd...
 
So it sounds like everyone who's manual key won't work without power has had their lock actuator removed, or at least isn't sure that it wasn't done prior to their ownership.

Does anyone have a rig with an untouched lock actuator that won't unlock with the key when there is no power?
 
I think what may have happened is whomever installed the actuator didn’t insert the door lock cylinder rod into the lock actuator correctly. It may have not been engaged into the actuator until the door locked cylinder was turned and then the rod fell into position when the power lock was actuated again.

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