On my 2004 I had to ground the yellow wire from the rear emergency door for a relay to properly work.
I explain it a little bit in this video around 3:30-3:50 mark
Episode 4 - Removing Extra Wiring and Rubber Flooring https://youtu.be/Amt8IRof8Jo
If you need help let me know
If I remember right the relay was in the upper left corner of my electrical cabinet. I mention the wire number as 32 in the video. Not sure they will be the same though.
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