Hybrid card lock MIWA MC25(MC-25), inspection and repair of locking failure with card key

"The key has been lost since this morning."

It was said that it was impossible to lock with the card key. Since it was after a storm, is it a defect caused by dirt? The mechanism of MC25 is complicated, but it should be quite strong against wind and rain.

When I inserted the card key, the latch of the internal mechanism was not locked. Also, no particular problems were seen with the code card settings.

Once I removed the code card, I sprayed and oiled some of the mechanical mechanisms inside the main unit. I could hear the card key locking the latch firmly. Behavior has also been improved.

In the end it was due to lack of oil.