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Power Drivers Seat 2008 C30

Help, Advice, Owners' Discussion and DIY Tutorials devoted to the second generation C70, S40 and V50 Volvos -- awkwardly model year 2004 ½ onwards -- plus where to go for advice and discussion on Volvo's sporty C30 Coupe powered by Volvo's ubiquitous inline 5-cylinder power plant.
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Pretribrapper
Posts: 116
Joined: 10 December 2016
Year and Model: 2011 C30 2.0 T5
Location: Wisconsin
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Power Drivers Seat 2008 C30

Post by Pretribrapper »

Lost power function to drivers seat. tested the motors individually and they all work. Swapped out CEM and the new CEM was not recognized by car so I could not start car and it did not fix my seat controls with new CEM so I went back to old CEM. Tested power to the wiring and it works as well. Constant 12v at the seat Replaced controls with used control board and it did not work. Bought new seat control board and it also does not work.
Any ideas.
Original part number#
31252859
07W473
first replacement part #
30797730
08W071
Second replacement part #
30659533
22W395

All of these parts are supposed to be cross compatible but I don't think they are working. Is there another step I need to take to fix. My obd scanner thinks the board is not compatible with my car but Volvo says it is

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