Sent off my DDE, CAS, and key to a service to have my DDE no start condition cleared (Incorrect DEF error).

Word of advice to diesel owners. Don't EVER reset SCR codes. Work through the ISTA test plan to get the truck to clear it on its own. I reset the original SCR efficiency code and it triggered the no start countdown. I'm learning the hard way on how to diag the diesel emissions system. Hopefully you won't have to.

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2005 X5 4.4i Build 04/05 Maintenance/Build Log
Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles)

2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles)