Discovery TD5 Series II Automatic

I have a 2000 Discovery TD5 Series II Automatic. I do not have an owners manuel. Today the 2 green "cog" M & S lights were flashing and the D symbol along with the red light on the shift lever. The car also seemed sluggish. The car had been parked facing up on a steep hill. I stopped on the level and after a few minutes they went out and everything was OK all day. It occurred again later in the day, again for a few minutes. I live in Spain and the outside temp today was about 32 degC. Are you able to tell me what this means.

I had the same thing happen to me ,got engineer out and put computer on and he sad the battery voltage had drop below a certain level and that is the warning it gives . had a new battery fitted being ok since .