SMARTBEAM® System

The optional SmartBeam® (auto high beam) system includes the SmartBeam® module with digital imager camera and electronic circuitry integral to the electrochromic inside rear view mirror, the SCCM microcontroller, the BCM, the EMIC, the EVIC, the headlamp switch and the multi-function switch. First, the Auto High Beams  option must be enabled using the customer programmable features function of the EVIC. Then the A  (Automatic) position must be selected using the rotary knob of the headlamp switch, the headlamp beam selector switch must be in the high beam position and the appropriate ambient light conditions must be present. Finally, the vehicle speed must be greater than 32 kilometers-per-hour (20 miles-per-hour).

Once all of these prerequisites have been met, the SmartBeam® camera and its circuitry within the electrochromic mirror automatically sends the appropriate electronic headlamp beam select switch status  messages to the BCM over the CAN data bus. The BCM then responds to these messages by providing a pulse width modulated voltage output to the proper headlamp bulbs or the headlamp ballasts through the right and left low and high beam feed circuits to illuminate the headlamps. The BCM also sends the appropriate electronic messages back to the EMIC to control the illumination of the high beam indicator.

The SCCM microcontroller continues to monitor the multi-function switch, and will send the appropriate electronic messages to the EMIC, which relays these messages to the SmartBeam® circuitry in the inside rear view mirror and to the BCM to manually invoke the beam select switch momentary optical horn (flash-to-pass) feature or, when a detent switch position is selected to override SmartBeam® operation.