When you try to put the window up, are you using the drivers switch or back door switch. If either switch fails the other will not work properly. So the problem may be the rear door switch.

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2009 CLS550
2005 X5
2004 ML350
2002 X5
1998 323ic (sold)
1996 S320 (sold)
1991 190 (sold)
1989 300SE (sold)
1984 SD (sold)
1984 300D (sold)