Have a light come on when go round corner its a red ! symbol

Look in your manual instrument cluster section. You did not specify the year, make or model to determine what it means. If you do not have the manual, google search year, make, model and manual.

You might want to check your fluid levels right now, as red light on dash is not good.

Check the oil level first. If low, top up the oil.
Does this happen round corners at speed or all the time? If round corners the oil is low, if all the time, possibly a sensor issue so get it checked by a mechanic

the red lights mean that the CPU has found a fault relayed by a sensor. By the noise I would say that the CPU got it right and that you should be checking for mechanical failure of the engine from say no oil or no coolant

It might be you ACS if it is you have no ABS or traction control - go to a garage asap Any red light on a BMW is not good!

i have a light that comes on my audi a3 1.8t dash board .it is round with a cross through it and like a little box on top can any one tell me wat this is thanks

Check the level in the brake-oil reservoir.

This reservoir is in front of the drivers seat IN the engine room.
Check your user manual to be sure of the location. It's a small tank, with, generally a black cap. On the cap you will read the type of oil needed: DOT3 or DOT4.

Is it in the center of the dash or in the right corner? The one on the right is for the ABS. The one in the center is a general message. Using the read function on the signal stalk there will be an explanation of the light.

There is a sensor in the coolent tank if it gets low it will make the light come on when you go around a corner.

you water level in your windscreen washer bottle is low check all water levels it is go practice to check all water and oil levels once a week

Yellow oil can lit means you need to top up the oil. Red oil can means you have lost oil pressure.