I would ask to speak with Service Manager, not a Service Advisor. The TSB does not require that they be able to reproduce the fault, only on complaint, that it be replaced. Since it's a factory TSB, it should be no skin off the dealer's nose to replace and have it paid for by corporate.

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'12 E70 X5M Black/Black w/ all options
Daily driver and tow vehicle

'95 E36 M3
Cosmos Black S54 swapped CM/GTS-4

E70 chrome/black kidneys for sale http://www.xbimmers.com/forums/showthread.php?t=950997