My vehicle battery failed on me. I'd had an operation so it sat on my drive for 8 weeks. I eventually changed the battery and now the leisure side of the vehicle isn't working. The step works and the fridge light is on, but the control panel is barely lit and there is no response from the control buttons. I've checked all the fuses and everything seems ok. Can someone tell me if this is a control failure issue or could there be something I'm missing.