Automatic Headlamp System
When it is dark enough outside and the exterior lamps control is in the automatic position, the headlamps come on automatically. See Exterior Lamp Controls .

The vehicle has a light sensor located on top of the instrument panel. Make sure it is not covered, or the headlamps will be on when they are not needed.
The system may also turn on the headlamps when driving through a parking garage or tunnel.
See also:
Windows
CAUTION:
Leaving children, helpless adults, or pets
in a vehicle with the windows closed is
dangerous. They can be overcome by the
extreme heat and suffer permanent
injuries or even death from ...
Exterior
Described by Buick as having a “refined ruggedness,” the Rendezvous has an
overall shape like that of an SUV and is augmented by details that promote a
youthful image. Sharp lines take precede ...
Engine Heater
The engine coolant heater,
if available, can help in cold weather
conditions at or below −18°C (0°F)
for easier starting and better fuel
economy during engine warm-up.
Plug in the coo ...
