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Question:

Car anti-theft device is always locked one of the doors how to do?

The other three doors can lock and then lock the lock on the lock, unlock the time when the four can open.

Answer:

Put the ear on the front of the door near the handle, with remote control to open and close the door: A, if you can not hear "click, click" sound. The remote lock is locked and the harness is short (broken). Replace the latch or repair circuit. B, there is sound, but the reaction is not flexible, or friction sound big. The locking device aging, linkage structure of the lack of oil friction increases, linked to the structure of mutual interference. Replace the transmission or lubrication, adjust the linkage structure.
I also have this problem you put the door from the new off on the lock can also be transferred to the next lock
Very simple, only two possible, the first is a long time inside the lock block a little rust, this simple, engage in oil lubrication about it, the second is inside the lock lock motor fixed screw loose, open the door Tighten it.

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