See also:

How the System Works
URPA comes on automatically when the shift lever is moved into R (Reverse). A single tone sounds to indicate the system is working. URPA operates only at speeds less than 8 km/h (5 mph). An ...

Sensors
The solar sensor, located on top of the instrument panel near the windshield, monitors the solar heat. The climate control system uses the sensor information to adjust the temperature, fan speed, ...

Driving Impressions
Despite structural similarities to the wildly styled Pontiac Aztek, Buick's crossover model has a personality of its own. Automatic-transmission responses are quick and easy. Acceleration is good, ...