Turn on/off - The auxiliary lights are directly controlled by your BMW wheel switch to turned on or off (optional to turn off if the sync action is not required), push the wheel switch to the right side for 2 seconds to turn on the auxiliary light system and pull it to the left side for 2 seconds to turn off.

Light Sync - Use the facatory light switch to set the auxiliary lights. Switch between daytime running lights/ high beam lights/ low beam lights.

Turn Signal Sync - Canceling the corresponding auxiliary light when the turn signal on. Warning Flashing Sync - The yellow light group of the auxiliary light (the fog light of G4-S) flashes synchronously with the factory BMW warning signal when the warning is turned on, improving visibility in roadside under emergencies.

Horn Flashing Sync-  The auxiliary lights are automatic flashing when the horn is long pressed over 0.5 seconds.

Color Temperature Adjustment - The color temperature of the G4-S fog light can be adjusted by rotating the BMW wheel switch from 3000 (yellow light) to 6000K (white light). Pull the wheel switch to the left side twice to enter the color temperature adjustment mode when the fog light is on.

Brightness Adjustment - Push the wheel switch to the right side twice to enter the brightness adjustment mode. Rotating the wheel switch to adjust the brightness from 0-100%.

Extra Turn Signal Filling Lights - If customers add one more pair of fog lights (G 1600) as turn signal filling lights, the corresponding filling light will be turned on automatically when counter steering action or the turn signal is turned on.