mariusk31

Hi there , I need advice on my A class 180 cdi (w139) , when I turn the key to nr.2 , all the lights are burning except the glow plug light.when I turn the key to start it's totally dead no crank.
After I left the key in the ignition at nr.2 for about 20 minutes as I switch the car off then on again the glow plug light start showing.Now it take 1 hour before the glow plug light come on before I can start.
any advice please.