i have an audi a3 1.8t cabrio and when i am turning abruptly a red explanation mark comes on and abs and esp turns off , when i turn the car off and on again its fixed! please do u know anything about this isue! thanks a lot

 

I'm not sure if this is the same problem that I had but the symptoms are similar:
On my 2002 A6 the red explanation mark came on with a loud beep when I was taking sharp corners. It turned out my break fluid was low and in corners the volume shifted away from the sensor so it figured the fluid was empty. I filled it up to the max point and never had an issue within the last 4 years (of course I flush it every 2-3 years now)

 

thanks for the reply ! ill try this because they want me to pay 2,500 euros to change the brain chip

 

yes, check all your fluids - brake especially. sometimes they can swish around as you turn and then throw the lights/codes on