Sudden power steering failure on my 2007 1.9Tid wagon. Have 12v power at the pump. Connected Tech2 which could not communicate with the module. Used the Add/Remove function to remove the pump and tried to add it as per the TSB No. 645-2683. Add module failed. Presumed bad pump module so replaced complete power steering pump with good second hand one. Tech2 now shows the car not equipped with EHPS and will not add the module. Any ideas?