My light assist has stopped working - it just displays a message on the dash when you try and use it. Manual high beam works fine so I'm guessing a problem with the light sensor under the rear view mirror. Has anyone else had this as it seems guise unusual. The car is booked in for a service with a few days of warranty remaining so the timing was handy. 

Mine has just played up, same problem as yours by the sound of it. Unlucky for me my warranty ended the end of October. It could cost nearly £100 to diagnose/fix, based on what I have told the stealers. (they've not physically seen the car, just wanted to chat to them first) Black_sheep has commented on a post I put on a few days ago so that might be worth a read. Hope you get it sorted.

 

Best Regards

 

Richie