Light came on around 8500
We to got the low coolant light on our 2013 with the 4cyl. Dealer pressured tested, no problems. They said it is inherent in the 4 cyl twin turbo. Makes no sense to me in a sealed system but we'll see I guess.
2006 X3 Silver Grey/Black Lthr/Alum Trim/Sport Prem Pkg/Xenons/Servotronic/Prem Sound/Satellite Radio/Heated Seats/Carbon Fiber Pillars/Blue Tooth/Aux In/Cargo Net/Aluminum Pedals/V1 Hardwired