How many times does it flash? Here is why I ask...
I too just bought my x and before I picked it up I had the dealership put brand new tires on it... I drove it very little until the first Saturday that I had it... Took it out on the high way.. My light started to flash, it would flash 8 times then go off for about a minute... Did that the entire 25 mile trip... On the way back it did not do it at all... I believe my issue was the new tires and the x learning that it had new shoes put on her.. Has not done it since and my tires have about 600 miles on them. During my research of the issue I found that not only is the ground wire a culprit of this issue, but tires make a difference s well.. Wether it is different sizes or even different brands of tires, and even the wear between the tires that can make it flash...
Hope this helps,