Headlamps

The low beam headlamps may be turned on two different ways. First, when the headlamp switch is placed in the ON position. Second, with the headlamp switch placed in the OFF position and the ignition in RUN or CRANK position, during twilight sentinel operation in low light conditions. If the headlight switch is left in the ON position, the headlights are turned off after the ignition switch is turned to the OFF position. If however the headlights are turned on after the ignition switch has been turned OFF, the headlights will remain on until turned off or the battery runs dead. With the headlights in the low beam position, the high beams may be momentarily turned on or flashed with the dimmer switch handle. The flash-to-pass feature is accomplished by pulling the dimmer switch handle toward the driver. The high beams can only turned on when the low beams are operating. The high beams may be switched on by pushing the dimmer switch handle away from the driver until the dimmer switch is activated.

The Daytime Running Lamps (DRL) illuminate the high beam headlights at a reduced intensity. With the headlight switch in the OFF position, the high beam headlights will either be turned ON or OFF, after an approximate 30 seconddelay depending on whether daylight or low light conditions are sensed. The DRL operates when the ignition switch is in the RUN position, and the parking (emergency) brake is not set or the transmission is not in park. When these conditions have been met and the ambient light sensor indicates daytime conditions, the DRL will illuminate. Any function or condition that turns on the headlights will cancel the daytime running lamps operation.

When the ignition switch is in the ON position and the wipers have been turned on for approximately 20 seconds, the BCM will turn on the low beam headlamps and the park lamps. The low beam headlamps and the park lamps will turn off approximately 20 seconds after the wipers have been turned off. If the ignition switch is turned to the LOCK position, the low beam headlamps and the park lamps will immediately be turned off.