These installation instructions are primarily designed for use within the BMW dealership organisation and by authorised BMW service companies. In any event the target group for these installation instructions is specialist personnel trained on BMW cars with the appropriate specialist knowledge.All work must be completed using the latest repair manuals, circuit diagrams, servicing manuals and work instructions in a rational order using the prescribed tools (special tools) and observing current health and safety regulations. Ordering instructions The seat and backrest covers must be ordered separately in the appropriate colours (see EPC for part numbers). Installation information Ensure that the cables/lines are not kinked or damaged as you install them in the car.Additional cables/lines that you install must be secured with cable ties.If the specified PIN chambers are occupied, bridges, double crimps or twin-lead terminals must be used.All the figures show LHD cars, proceed in exactly the same way on RHD cars.This active seat ventilation retrofit system does not require coding.