Probably not. In fact, most assuredly not. To equate a parking brake to an EGR or NOx reduction system is simplistic at best. Does your parking brake even work? Have you performed any troubleshooting? I mean, besides throwing parts at it.

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8/2011 X5 xDrive35d Sport, Black Sapphire Metallic, Black Nevada Leather, Fine Burr Walnut Trim
2/2001 M5, Jet Black, Exclusive Complete Black Walk Nappa Point Heritage Leather, Black Cubic Trim