Infiniti QX: Freeing a frozen door lock - Cold weather driving - Starting and driving - Infiniti QX Owner's ManualInfiniti QX: 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 Intelligent Key system.

    Antifreeze
    In the winter when it is anticipated that the outside temperature will drop below 328F (08C), check antifreeze to assure proper winter protection. For additional information, see “Engine coo ...

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    Safety Locks
    The vehicle has rear door security locks to prevent passengers from opening the rear doors from the inside. Open the rear doors to access the security locks on the inside edge of each door. To se ...

    Obstacle Detection Features
    If the liftgate encounters an obstacle during a power open or close cycle, a warning chime will sound and the liftgate will automatically reverse direction to the full closed or open position. After ...

    Engine oil viscosity
    Viscosity describes the flow characteristics of a fluid. If an engine oil has a high viscosity, this means that it is thick; a low viscosity means that it is thin. Select an engine oil with an S ...