Some of us having this very same issue and started the same thread only last week - Both paddle shifters only downshifting???
Seems a replacement paddle is the solution, I've just told my dealer to order one before it goes in next week to avoid delays.
My volume buttons on the same side of wheel have also been replaced once and still playing up will need to be looked at again. Maybe the wiring to the steering wheel is faulty on some of our rigs???
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