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I am going to assume that this is a Bentley Brooklands, if the passenger seat works correctly from the center console switches you can lift the center console and switch the connectors from the driver's side to the passenger's side. This will let you check if it is the switch that has failed. The other possibilities are the motor and the module. The module is much more common of a failure. Does the seat move with the memory function? The switches on the side of the seat are for the lumbar bags inside the seat and depending on your personal build may be difficult to feel. Let me know if you need help with lifting the center console. Colin