boy

I have mercedes C 230, model 2005, A warning appeared saying " light sensor drive to workshop " I have noticed this warning for four months and it appears every two days and the light flickers and feel the power of the car became weaker. What could be the problem?i already replaced the battery, what is the malfunction? Can any body advise me what is the problem? and what i need to do to get rid of this message.
thanks.

PelicanParts.com

Welcome! You may have better luck posting your question in here.

This thread covers that warning light and may give you some help as well. Look at post #13.

-Luccia