Customer Service: was very very good. 5 star
Quality of Work: Replaced ECU, 2 Sub wire harnesses & 1 injector relay. The parts replaced can't be seen or inspected by owner due to their locations, so as long as they don't go bad again the quality of this work performed would be excellent. However the question of the quality of the original build of the vehicle has now come into question. Wiring should never be a issue. Sill 5 star for quality for now.
Friendliness: Very very good. 5 star I'm sure this is a hiring requirement for all Service Advisors working for Infinity Dealerships.
Price: Again as stated before $4000 is a lot of money for a repair for bad wiring or poor workmanship during the original build of the vehicle. I have looked on forums and many QX56 owners are experiencing this issue. Unacceptable.
:( 0 stars here.