+1. I tried mine too (535i). Just like yours, it locked, no audible alert or blinking clown nose. I don't usually do that maneuver, so I'm not too concerned.
Originally Posted by dbs600
Yes, it locks when the engine is on.
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2011 535i AT | Black Sapphire/Cinnamon | Premium | Heated Sts | Nav | Sirius | Anthracite Hdr & Trim
Prior: 2008 335i 6MT Sedan | Black Sapphire/Terra Leather | Premium | Cold | CA | OEM Alarm
Prior: 2005 330i 6MT | Black Sapphire/Sand Leather | Premium | Cold | UGO | OEM Alarm