2004 Buick Rendezvous Owner's Manual - Page 175

Dual Automatic Climate Control System Your vehicle may have the dual automatic climate control system. With this system you can control the heating, cooling, and ventilation for your vehicle. To place the entire system in automatic mode, do the following: 1. Press the driver's temperature knob to turn the system on. 2. Adjust the temperature to a comfortable setting. Choosing the coldest or warmest temperature will not cause the system to heat or cool any faster. In cold weather, the system will start at reduced fan speeds to avoid blowing cold air into your vehicle until warmer air is available. Then, as the air warms, it will be delivered through the instrument panel outlets. The length of time needed for warm up will depend on the outside temperature and the length of time that has elapsed since your vehicle was last driven. 3. Wait for the system to regulate. This may take from 10 to 30 minutes. Then adjust the temperature as necessary. 4. To turn the system off, press the passenger's knob. Automatic Operation AUTO (Automatic): When the driver's temperature knob is pressed to select AUTO and the temperature is set, the system will automatically control the inside temperature, the air delivery and the fan speed. AUTO will also appear on the display. 3-35