I have a Bessacar Fiat Ducato motorhome. It’s been idle for a few months. I decided to have four new tyres fitted and on the way to kwikfit I noticed that the ABS light was on and the message EBD failure check manual came on. Also the the yellow warning light for injection system was on. My motorhome dealer couldn’t fix it and told me to take it to Guest Van and Truck Fiat specialists. They have had it for two days now and don’t seem to have a clue. They told me they have asked an outside electrician to check the wiring tomorrow.Does anyone have any ideas? The van drives like normal with no loss of power and the brakes seem fine.