My 2005 W203 recently developed a start-up issue, but I am not sure what's the exact problem. Normally, when I insert the key and turn to position 2, the dash panel should instantly light up. However, sometimes the dash panel doesn't light up at all; or it delays for a few seconds before lighting up; or it does light up first but then dim for a couple seconds, before the lights come back again. In any of these occasions, if I go ahead to start the car, the engine will start straight away but cut off within 1 minutes. However, in the same situation; if I remove the key and insert again without seeing above symptoms at position 2, the car is fine. Anyone could suggest what the likely problem is? Cheers.