HI mate, That seems very unusual. Have you had a Scan gauge put on it to see if there is a Code thrown? and confirming it is a 2010 build? Australia did not se the Y62 until 2013 as a Series 1. Are there any dash lights coming up? seems like a fault sensor for No Key? Immobiliser? Limp mode would let you drive. Have you had it back to a dealer?