Hi all. My van has been on the drive for a few weeks with smart charger keeping the batteries topped up. Tried to start it today and two things are not right. The glow plug light is flashing (Engine management fault) and the Ghost input is not giving the OK signal. Have connected Carista and have 11 Faults. The Engine fault is 05523 this resets but comes back. The Central Electronic faults are mainly due to under voltage. Van battery is showing 95% on my battery monitor. Anyone got any thoughts on things to try?