I have a 2002 clk 320 and it has a nokia fixed in car telephone nokia model RTE-4HB also known as a nokia 6091 (i think this is the model) The telephone is linked to the radio and also the steering wheel controls When I try to make a call is give me the error no network and it will not log on to any network even if you try to choose a network manually I have tried a number of sim cards in the handset but they all have the same problem Please can anyone suggest a fix
Thanks