I cannot for any reason recommend this approach. Of course, running a MB service department I am a little biased. If you saw some of the hack jobs we get on simple, basic repairs you would likely think different. MB cars are oftentimes COMPLETELY different in the way things are done compared to domestic or japanese cars. ASE questions do not apply to the way things are actually engineered.

Sure, a brake job is pretty much a brake job, but anything that requires diagnosis of any sort should be handled by some one in the know. If you see a certain kind of car every day, you know all the little things that go wrong. You know what parts to be careful of because "this component always breaks if you pull it off like this". You know that "this symptom is almost always due to this". Sure, the generic indy may charge less, but when it takes him three times as long to figure out what the problem is and he breaks three extra parts that you wouldn't have otherwise needed, the real value of some one who has learned the make starts to shine through.