Check out known faults this I think is one of them you might have to replace the instrument panel hope this helps.
will
March 2009
if you lift the carpet on the drivers side inner sill you will find 2 earth wires bolted to the inner sill un bolt them and clean the connection faces and refit /these earth wires are for the instruments in your car and get disturbed or sometimes break
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Try fixfault.com to fix cars.