2010 X5 LCI 30D iDrive Engine oil too high !

[wslee]

I notised a message in my iDrive Vehicle status that the engine oil is too high, ask me to sent the car in for checking. I don't know how long has this happen, no warning message has been show up to notice me until I browse the iDrive Vehicle info myself.
I check the dipstick, I can obserb about 3mm oil over the maximum limit. The car is in 10,000Km now, I haven't add any oil since new. And very sure that never see this message before, the last time I check the vehicle status should be 3~4 months ago, no warning seen that time.
Goggle in the web show me with diesel leak to the oil sump which make me feel like crazy. This will cause the permanant damage to the vehicle !
Does any LCI diesel owner having the similar issue ? Will call BMW to book in a inspection tomorrow.