C230 Audio Deck!
I am not familiar with your OEM stereo. I think you need this Euro removal tool. I got this tool from Crutchfield when I bought my Alpine HU from them. You may want to try some local electronic/auto stores or check Crutchfield.com Once you have this tool, you just slide these two metal strips (they're like small nail files) into the slots at the bottom of the OEM HU. These metal strips sort of unlocks the HU then just pull it out easily.
Here's what I mean.
http://www.crutchfield.com/S-2yEH6x4...ol&i=120869001
Hope this helps.

crutchfield is a great shop with everything that i want for stereo replacement however they don't ship to australia, and i don't know of anywhere in australia quite like crutchfield.
are there any other aussies with the same problem and if so where did they buy their tools from and/or did they use an alternative?
also, i would love if someone had wiring details for the HU and also other details to the rest of the audio system in the car.. i have a '97 c200..
the problem i have now is identifying a few of the wires, and in comparison to the replacement aftermarket HU there is one extra wire.
the OEM HU that was in is a Eurovox 7479A, googling this didn't get me anywhere in identifying the wires i can't work out myself..
was able to find very a very good wiring diagram and www.the12volt.com (required membership to get to the wiring diagrams, but is free and is well worth it)..
also, to remove the stock HU you're meant to get some U shaped DIN tools to slide down the sides of the HU in the little holes, this unlocks the unit and you use the DIN tools to slide it out.



