There is a very detailed thread on the ML forum regarding the "how-to" of doing pads on these vehicles.

I followed the step-by-step procedures and was able to do the job quite easily!

http://www.peachparts.com/shopforum/showthread.php?threadid=29822

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2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car