I have 04 CTT and have been experiencing weird thing with the car. When the weather is hot the passenger door driver side won't lock whether I use the key or the key fob. I know it b/c the locking mechanism will not make sound and I try to open the door. It will open and the alarm goes off. When the weather is cold it will lock.
I did try to use WD 40 spray into the door lock but it still does not work. Have anyone experienced this? Thanks guys.
BTW, I did search the forum but did not see any links or info about this issue.

ALX5

 

Sounds weird, want to know cause.

 

Another things I found out today are: when I used the key fob to unlock it made clicking sound but not when I tried to lock it. the light in the door does not blink when I unlock it. the other doors lights do blink when unlock.
ALX5

 

Could just be blinking slowly.