Glow Plug Light Flashing?

[Fiat Ducato Motorhome]

Hi
I have a 1998 Fiat Ducato 2.8 IDTD Eura Mobil Sport Motorhome. And on turning the key to start it this morning the glow plug light started flashing quite a few times rapidly, after starting the engine it went off eventually. I turned the engine off and turned it back again a few times and the glow plug light stayed off. What does this mean? can anyone tell me. I'm guessing the obvious that the glow plugs need changing. Am I right?

Thanks guys
Paul

 

[Most Easterly Pandas]

I think it means one is starting to fail, but don't hold me to that.