I think I have read somewhere that you bring the seat back forward as far as possible, and then bring the whole seat back as far as possible, holding for 5 seconds. It might be worth a try

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Dennis
2006 E320 CDI Black/Black Leather. Nav, HTD Seats HK stereo 32000 miles.
2000 VW Passat 1.8t 300,000 miles as of Dec 09, 2009 original owner
1997 E300d Silver 300,000 miles As of Jan 05, 2010
3rd owner SOLD