hi mate,ill try not to get too technical ok.... this is a fairly new van so i would assume this vehicle has a multiplex wiring system,if so il briefly explain how it works..... basically all the computers on the vehicle actually talk to eachother using binary codes... if there is then a problem with any one critical system it can therefore shut down non critical components using this multiplex network to compensate.....are you sure you dont have any other probs,engine management air bags ect???
paul
April 2009