I brought my M3 back from Germany this summer and the Assist had to be activated by the dealer on this end.
My warranty had been activated, but Assist was a a separate matter. When I initially called BMW assist, they could not "ping" the car until the dealer did some work. Just a heads up.
2009 M3 E93 Silverstone II over Bamboo: 6MT, Tech, Premium, Cold, Premium Sound, Ipod, 19'' Wheels, OEM Exhaust Mod.