First time visitor on here. 9 yr old VW T6 Was parked up at airport for couple of weeks in October when country had bad storms. Returned to camper van and noticed a repetitive beep noise from the media player. Someone suggest I clean the reversing sensors which seemed to do the trick. Since then diesel heater has stopped working...dead, control pad doesn't light up. Beep issue has returned. I plugged into mains noticed water coming out my external elec socket when I took the cap off. Diesel heater made a bit of a nose then died. A fuse light was showing red, changed it but made no difference. Where to start....are the probs likely to be commented ?....water ingress, knackered leisure battery, replacement diesel heater ? If replacing battery or heater any recommendations for decent dependable ones ? Cheers