I have a 2011 Dodge Grand Caravn Mainstreet. The Step /Reset button on the left side of the steering wheel- which cycles the display of mileage, trip miles, gas mileage, etc.- has finally stopped responding. It's always been tempermental but now it just doesn't respond at all. The thing is I have no idea what this part is called nor what the part number is. Does anyone have nay insight? Thank you in advance.