I solved its problems by following this tutorial:
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I study this
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Replacing the # 264946 front coverwhen buttons break instead of
replacing the entire control module will savecustomers time and
> money
> Broken control module ?buttons? occur when tabs on front cover break.
> Use plastic front cover when replacing ?broken buttons
and wonder if it is possible to buy the # 264946, and where to find it. The control module "buttons" are broken.