1999 Buick Riviera Owner's Manual - Page 149

yellowblue Passenger Zone Comfort Control This system can be activated by turning the COMFORT CONTROL knob on the passenger's door. Adjust the temperature by turning the COMFORT CONTROL knob toward COOLER or WARMER. This control can be set up to 5_F or 3_C cooler or warmer than the primary setting. Notice the lighted display above the control which indicates the difference from the main temperature setting. Push the OFF button on the main control panel once to turn off this part of the system. Ventilation System When the vehicle is moving, fresh air flows through the air outlets. When the vehicle is not moving, you can get fresh air by selecting any airflow choice (except the rear window defogger) and any fan speed. The front seat passenger can control the air temperature in the right front passenger seating area. 3-7