Owner Manual
Page 263
...NOTE: Recirculate without A/C should not be quickly removed by turning the mode selector to Defrost. The filter acts on air coming from entering the cabin. In winter months, make sure the air intake is free of obstructions such as fogging may reduce airflow, and if they enter the plenum... from outside mirrors. The Defrost/Floor mode can be used to the "Maintenance Schedules" in Section 8 of this manual for A/C Air Filter service information or see your authorized dealer for service. Refer to maintain a clear windshield and provide sufficient heating. Refer to fog on...
...NOTE: Recirculate without A/C should not be quickly removed by turning the mode selector to Defrost. The filter acts on air coming from entering the cabin. In winter months, make sure the air intake is free of obstructions such as fogging may reduce airflow, and if they enter the plenum... from outside mirrors. The Defrost/Floor mode can be used to the "Maintenance Schedules" in Section 8 of this manual for A/C Air Filter service information or see your authorized dealer for service. Refer to maintain a clear windshield and provide sufficient heating. Refer to fog on...