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Old 04-12-2011, 08:26 PM
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bluebee bluebee is offline
Seek to understand,^Value
Location: San Jose, California
Join Date: Mar 2008
Posts: 25,236
Mein Auto: 02 BMW 525i M54 auto 130K
For the record, I was googling today, and lo and behold, I find an answer to an ancient question of mine in this QSilver7 post on another forum:

(image and writing by: Bluebee ('s e39 forum...she didn't know the function of this piece since she has the regular 10-way seats that doesn't have the LUMBAR option)
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