When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
My 2006 CLK350 has the MCS A209 820 39 89 comand head unit may need to be resetfor the radio to function.
I only get the Mercedes Benz logo on the display.
Does anyone know how to get in the engineering mode? What keys do you push? This is a spare comand head unit