Automatic Headlamp System
When the exterior lamp control is set to AUTO and it is dark enough outside, the headlamps come on automatically.

There is a light sensor located on top of the instrument panel. Do not cover the sensor. Otherwise the headlamps will come on when they are not needed.
The system may also turn on the headlamps when driving through a parking garage or tunnel.
When it is bright enough outside, the headlamps will turn off or may change to daytime running lamps (DRL).
The automatic headlamp system turns off when the exterior lamp control is turned to
or the ignition is off.
See also:
Muting a Call
During a call, all sounds from inside the vehicle can be
muted so that the person on the other end of the
call cannot hear them.
To Mute a call
1. Press . The system responds
with “Ready” ...
Exterior
Described by Buick as having a "refined ruggedness," the Rendezvous has an
overall shape like that of an SUV, augmented by details that promote a youthful
image. Sharp lines take precede ...
Exit Lighting
The headlamps, taillamps, parking
lamps, back-up lamps, and license
plate lamps come on at night, or in
areas with limited lighting, when the
key is removed from the ignition.
The dome lamps ...
