I hame a CMS with the auto dimming rear mirror.I bought it used and the rear mirror is blear with some kind of scratches, which is annoying particularly during the day or at night when a car with the lights on is close behind me.I have to replace the hole system or only the "glass"?

 

The whole mirror, are you out of warranty. Do you have pics, delt with auto dim mirrors before.

51169219371 Auto dim only.


https://www.ecstuning.com/Search/SiteSearch/51169219371/

 

You may need to replace the whole thing. Here if needed. You can maybe search for a used one on www.car-part.com, get the class part and maybe see if you can break into your unit to replace it. There is a DIY here that might help.