Door lock removal?

[moire76]

Hi there,
I've bought a '89 190 Mercedes a few weeks ago, and I did not get keys to the doors, only for the ignition. I talked to the previous owner, but neither him, nor the the one from who he bought the car has its key for the doors and the boot, they all used only the remote for locking/unlocking the car.
The remote controller is now broken, it does not lock the car, only opens it.
So now I can only lock the doors if I push down the drivers side button through the rear door, and when the central locked, I shut the door. Then open with the remote.

Needless to say, that I'm quite afraid that I will soon lock myself out, if my broken remote will once not open the doors, so I want keys for my existing door locks.

As I really don't have a lot of money to spend on this, I first wanted to try creating keys for the existing locks, it can be done cheaply by lock masters, but I need to remove the lock cylinder from the door.

But I just can't get it out. I couldn't follow the factory manual, as it guides me to insert and rotate the key clockwise 45 degree to get it out, as I do not have the key.

I removed the door card, but couldn't access the back of the cylinder.

I was also told that if I cant turn the key in the cylinder hole, I can grab the whole thumb and rotate it, but it's out only about half an inch, so I cannot rotate it.

I also tried locking-unlocking while pulling out to no avail.

Do you guys have any idea, how I could get this little beast out without damaging?

Thanks in advance for any advise!