2005 Volvo S60 door lock problem

[Radaren]

Hi there!
I have a little problem with my volvo s60. The manual door lock for with the key doesn't work at all. When i put the key into the hole, and tries to turn it to one of the sides, the lock doesn't move at all. Im not able to turn the key into the door. The same is on the trunk. Do anyone know what i need to do?

[oragex]

Use some penetrating oil and spray inside the lock (not too much).

Insert the key then start trying to turn it slowly back and forth. No need to force, just keep trying to turn it. It will loosen up after a while.