Diesel spark plugs

Hello, I expect a great help from the great will forces that answer my consultation explain: I have a Ssangyong Rexton 2.9 Diesel year 2006 it turns out that when the start contact begins, the light of the witness of the spark plugs incandescent on the board does not appear and once the car starts the light of the spark plugs remaining alone on the board for about five min. But and then this is off this is not normal, I hope an answer, thanks Ricardo

It is telling you that you have a breakdown in the preheating system, it may either have burned the heater or a failure in the electronic unit that commands them, you should usually make a check with a diagnostic machine to see which fault codes have been generated since it will be easier to find the breakdown, but if you do not have it you could start by checking the heaters and thus be isolation.
I hope it helps you