See also:

Freeing a frozen door lock
To prevent a door lock from freezing, apply deicer through the key hole. If the lock becomes frozen, heat the key before inserting it into the key hole, or use the INFINITI Intelligent Key. ...

Antifreeze
In the winter when it is anticipated that the outside temperature will drop below 32°F (08C), check antifreeze to assure proper winter protection. For additional information, see “Engine cooling syste ...

Door locks/unlocks precaution
● Do not push the door handle request switch with the Intelligent Key held in your hand as illustrated. The close distance to the door handle will cause the Intelligent Key system to have diff ...