Hi there,
Very interested reading this post...my 220d is going in to Glasgow Lexus tomorrow for (surprise surprise) investigation into Engine Light + Check VSC + Traction Control Light etc etc. Went into limp mode yesterday. A friend retrieved the code for me (P2002 - Particulate trap efficiency below threshold bank 1).
My car is a 2007 with 57k on the clock. All servicing so far by Lexus. Hopefully I'll get the same level of customer service you have received and Lexus are famed for.
Will keep you posted.