Why is it that every car I’ve ever gotten into that has central locking has the ‘feature’ of keeping the door locked when you lift the door handle up. This happens when the passenger tries to open the door while the driver is unlocking all the doors… which results in just the passengers door staying locked. Is it just part of the locking mechanism that stops the door being unlocked when the handle is being pulled?
This ‘feature’ pre-dates electronic locks. In the 70s and early 80s, the driver would reach over and pull up the manual locking knob, and if the passenger was lifting the outside door handle, the door would remain locked.
Since I imagine that modern locking just added a motor to the existing locking mechanism, the behavior came along for the ride.
BTW, welcome to the board.
-lv
i will offer this answer.
because you open your door mechanically, not electromechanically.
there is no mechanical connection between the doors.
if you want all of them to open you have to activate the electrical system, so for example you can push the ulock button, in car on on remote.
for additional $$ they could have installed a sensor to tell if you are opening the door, and activate the electrical unlocking of other doors, but since you have unlock button on remote which is simpler to press than it is to put a key into the door anyway, they probably figured you will be using this button anyway so you dont need the additional sensor.
?
No vasyachkin, thats not really what I was asking. So someone presses the unlock button on the remote control, the electrical system unlocks all the doors right? However if you hold the handle of one door then that particular door won’t unlock… this seems to indicate to me that maybe there is a special sensor to keep that door from being unlocked with all the others.
And if this is some kind of legacy feature from decades ago, why keep it? Why was it there in the first place? It seems to be more of a nuisance than something useful.
You have to consider how the door lock works. When you lock the door, it disconnects the handle from the opening mechanism, so that it’s impossible to unlatch (open) the door with the handle. When you unlock the door, a motor moves the latch up so that it is connected to the handle once again. http://www.howstuffworks.com/power-door-lock2.htm
So, one could infer from this information that pulling up on the handle during the unlocking process could interfere with the motor’s ability to reconnect the latch to the handle.