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      02-20-2013, 07:28 PM   #2
jwzimm
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Drives: '11 335i X-drive Coupe
Join Date: Jun 2011
Location: Renton, WA

iTrader: (10)

It's not that simple. If you have a pre-09 (not 100% sure on the build dates) you are prewired for the alarm. You could then install the OEM alarm and code it to work. If you are after that year you are not prewired. The only option then is to get a product like the RemoteKey+ which emulates an alarm with the beep.