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Hi, my name is***** you please post the last 8 digits of your vin number?
Ok, are all of the switches for the seat not working?
It sounds like you may have a bad seat module under the seat or the module is disconnected. I'd inspect all of the plugs to the seat module. Also check fuse 27 in the interior fuse box and see if is blown or missing. If the fuse is good and the module is plugged in I would try a new module.
Let me know if you have any questions.
There is no relay in the system.
The seat module under the seat is basically the relay.
It will not need programming as long as the part numbers match.
The part number in the catalog is 211 870 46 26.