Nissan Altima (L33) 2013-2018 Owners Manual: 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 remote keyless entry function on
the Intelligent Key.
In the winter when it is anticipated that the temperature
will drop below 32°F (0°C), check the
anti-freeze to assure proper winter protection.
For details, see “Engine cooling system” in t ...
Cold weather driving
Anti-freeze