Mercedes A class 2001 - Central locking does not work with the key

Hello, I have a problem with locking the car. First of all, the car does not have a remote control to open and close, after inserting the key, it can only close the driver's door, and if he puts the key in the passenger's door, it will only close the door by closing the car with the button on the console and closes all the doors. What is this help about.

The remote control can be set up, and you have a microswith in the driver's door to check. The passenger probably did not have the factory.

Maybe you have a contactor, switch in the lock, informing the central lock about the position of the key insert - the intention to open or close the locks.
For example, 3 wires come out of the lock, one common and two others, one "open", the other "close". Contacting this common with one of the others causes the activation of parts and openings or locks of the locks. It's not a Mercedes in my example, at least the most common fault will be breaking and tearing the wire in the transition from the door to the body post in the rubber cover which you will see when you open the door.
Breaking the cable from "closing" will disable closing, from "opening" to opening with the central lock, and a break on this common both functions from the key.
If the locks work from the locks, maybe only the movement of the key insert does not affect this contactor - anyway, you would have to look at the door and check the central lock control cables, or the lock - microswitch as kkknc wrote.
You have a second contactor on the console, independent of that in the driver's door, and it may not be in the passenger door at all.
http://mercedes.auto.com.pl/forum/viewtopic.php?t=21583
Anyway, https://www.google.com/search?q=centralny+zam...es+A+klasa&ie=utf-8&oe=utf-8&client=firefox-b in the age of the Internet, the vast majority of faults and solutions are already described, only you need to look for, read and look at your place.

So I understand I have to take the bacon off and how to check it and where it is

Added after 4 [minutes]:

Oki thanks guys, if I check, let me know what and how

Added after 6 [minutes]:

Oh, and one more thing, when I put the key in the driver's door, it enters very tightly as if it does not fully fit and in order to turn it in the insert, I have to figure out how to move it or have an impact on opening and closing

Added after 51 [minutes]:

Haha, gentlemen, everything works, it was enough to hold the key in the closing position longer. Thanks for your help, I'm closing the topic

Well, unfortunately you have to take the upholstery off.
Where? I do not have a merco, for me the contactor was integrated in the door lock ... and actually it would be a replacement of the entire lock, because it is poorly disassembled
Photos of locks / key inserts can help here, if available on the Internet> graphics.
Figuratively, do you see the unlock and lock in the picture? http://www.mercmania.pl/forum/files/thumbs/t_siownik_c_zamka_drzwi_kierowcy_745.jpg
Sometimes it touches here, sometimes there, and you should track similar wires at your place, check if the common one makes contact with these "locks". So after disconnecting the right cube, use the meter to check if there is a transition between one contact and the other in one key position "open", and in the "close" position between the third contact and the "first" joint.

Do you understand the idea behind this contact? Another car, please do not follow the description
The third one, from the bottom, makes contact with one contact once and the other.
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It's great, but I've already sweated ... Maybe someone else will find it useful here.
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Hezbollah wrote:

when I put the key in the driver's door, it enters very tightly as if it does not fully fit and in order to turn it in the insert I have to figure out how to move it or have an impact on opening and closing

It may touch the end position of the key, where you may have / have a problem to turn the key to this position. Three to start the cartridge at the beginning, because in a moment, when it rains harder, it may stop working at all / fit the key to the cartridge.

Damn it does not work again, as I stifle all the tears and close the driver's door and then open it, open all of them, but I don't want to close them again

I recently had a broken "opening" wire from this contactor, for a moment I opened all doors with the key - it still connected perfectly with the closed door, but after a while I received an additional impulse to open the locks in some 2/3 position to fully open the door - the wire was already torn again he touched at this point by activating the central one, he "did" the key, and then the cable had to be completely broken off, because it completely stopped opening the key with the central lock.
In my case, the cable in the door-post condom is damaged after 20 years of bending when opening and closing the door, "twisted" ... You can see too often getting in

The airway is intact but now it does not open even after manual inhalation of the powder

Added after 19 [hours] 49 [minutes]:

Hello again, gentlemen, yesterday evening the lock started working again due to the fact that yesterday I did not have time to get inside the door I want to do it today someone can help me how to remove the door bacon so as not to damage it immediately.