Dealer can't 'code' as we normally do described in this forum...
They will need to add the Alarm Code designation to the VO 1st. Since your car did not have this option originally, that code is not present in the system. Code needs to be in there to tell the car alarm is installed.
In the case of most dealers, this can only be done thru a complete reflash of the car ECU - takes around 3hrs for full flash (as long as everything goes OK).
Did you tell them YOU installed the alarm & car didn't have it orignally?
Cause if you did - since this would not be looked at as a glitch or warranty claim (you installed the alarm afterwards) - they normally they try to charge $300 for this...
2009 328ix E92//SGM//ACS Roof Spoiler//MTech Aero Lip+Trunk Spoiler//M3 Side Skirts//CF Roundels+Grilles//M3 Novillo Interior//Perf Shift Lever+Boot//MPerf DCT Wheel//M3 GT3 eBrake Handle+Boot//ACS Pedals//M3 Mirrors//LCI Tails w/LUX Rev//DTEC V7 AE+MTec 6000K D1S+HPB HID 6000K Fogs//HPB LED Interior//RPI Scoops//CF Euro Airbox+Underhood Hsgs//K&N//BMW PE//MTech Rear Bumper-iS Sport Diffuser//CF Strut Brace//Vishnu OFT//BMW 193M's+Kumho 4X