2007 LEXUS ES350 User Comment / Complaint

I purchased a new 2007 lexux es350 on april 12, 2007. in a right hand turn, the vehicle severely oversteered. immediately the check engine light came on, with an error message to check vsc. as a result i returned the vehicle to the smithtown lexus service department on apr. 19, 2007 with 244 miles on the odometer. they took over twenty-four hours to diagnose the fault. they allege that the failure is the result of a defective sensor in the transmission. although i have requested corroboration of the cause from a lexus factory representative and confirmation of the inability to obtain a replacement part for a week, and inspection of the defective part as removed from the vehicle none of these requests have been met as of april 25, 2007. as the defect is a safety related issue of vehicle stability i am concerned that the car poses a potential safety hazard to the public.