Radio and a/c control digital display panel, dim

Funny you should say that Mark. I noticed the same thing on my C240 02. It weird and I cant figure it out. Only problem is I cannot duplicate when I want to so I can take it to the dealer and show them. Sounds like another defect in the car. If anyone has any solutions please add. Thanks

BTW: My car is a 2001 C320.<br> Any help is appreciated about the diming situation.<br> <br> I am bringing in my car soon, to fix the fuel gauge problem (still waiting for the order part to arrive....six weeks and counting.) So, hopefuly I can get both done at the same time.<br> <br>

I can't say I've noticed it on my C230 'O2, but I would suspect that it compensates for ambient lighting. Try aiming a flashlight at the instrument cluster - I think I saw a sensor there. I will check it on mine when my wife gets home from work <br>

Just like rp claims in his reply this is a funciton to compensate for ambient lightning. When ambient light is strong the AC and radio shines brighter. I think this is trigged by the same sensor that trigs the auto head-ligths. Don't know where this sensor is located though. Anyway, there is nothing wrong, it is supposed to work this way, and personally I think it is a great feature!

Dts is totally right so don't worry guys ! ;-)