993TD Warning Lights

Hi Guys

Totally stuck here, hoping you could help. Just bought a 993ccTD for Son, went to start it this morning & its turning over but not firing up. Tried the manual pump but still nothing.

There is though a warning light which I have never seen before, directly above the coil warning light, its red, retangular and looks a bit like a mouth with teeth (I know that sounds really dumb) and as we didn't get a manual with the car, I was wondering if any of you knew what it was and is there a problem ?

Thanks in advance