when I bought my yeti the internal mirrors came automatically in the anti blind mode.

now it does not work anymore.

can anyone help me where to find the settings for this within VCDS

The mirror is not on Canbus so VCDS will not help. On the Octavia and Superb there is a switch on the bottom of the mirror to turn the function off and on, are you sure its still switched on (green light showing).

thank you for your quick answer

yes it is on,so I have to go back tot the garage because it seems to be a hardware matter then.

Yes, if the little light is on it does sound like a hardware problem. The mirror uses LCD technology to alter how it reflects light.