Nissan Juke 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 keyfob.

    Anti-freeze
    In the winter when it is anticipated that the outside temperature will drop below 328F (08C), check the anti-freeze to assure proper winter protection. For additional information, see Engine cool ...

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