Originally Posted by AzNMpower32

I believe that the headlamp washers work similar to the X3. If the headlamps are on and you pull the stalk for the windshield washer, the headlamps will also spray every 5 times. The button merely activates the automatic rain sensor, the same function as pushing the stalk up once in the older BMWs. The turn signals and wiper stalks are both electronic now.