Thanks all. I doubt the appropriate OE bands are available anywhere (on purpose). I might start digging around online for some bands that would perhaps not only fit but also give me the durability I'm looking for. In other words, not break down like a regular rubber band from Office Depot would.

While I have replaced the electronic brake lever, I've not been down any further on this car. I'm certain I'm going to have a "large" time dismantling that mess, then trying to put it all back together. Thanks for the instruction link!

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2016 X5 SDrive 35i Sport
2009 X5 XDrive30 Sport acquired 10/21/16 "Brigette"
2005 530i Sport acquired 5/2014 (wife traded for a milktoast Honda)
1999 528i Sport (306k miles!!) acquired 8/2006 "Prescilla" (sold)
1997 528i acquired 8/2004, "Helga" parted out and gone
1992 735iL acquired 6/2003, "Wanda" sold