programming

Sorry if this is a repeat thread but I've searched and can't find anything similar. I've just bought a 2013 E220 SE CDI S212. It only came with one key and I'm looking to get a spare. I believe main dealer prices are a bit steep, can anyone recommend an alternative and does the car have to go to...

I replaced a faulty COMAND unit in my 2004 SL600 with a Kenwood DNX7140. It seems in the 04 cars the Dash clock is set from the COMAND not the steering wheel stalk via the instrument cluster. What are the steps to use STAR diagnosis to fix this? How do I remove the phone and nav from the...