Main beam flash (level Up) RPO TT2

When the dipped beam headlamps are on and the direction indicator/multifunction stalk is temporarily moved to the main beam flash position, ground is fed to the direction indicator/multifunction stalk. The direction indicator/multifunction stalk grounds BCM through the main beam flash signal circuit. BCM sends a message with the main beam request to the headlamp control module to lift the light distribution screen from the xenon lamp. This causes the xenon lamp to light the headlamp at full intensity for a short period of time until the main beam flash stalk-switch is released.