got the message appering the other day whilst driving. charged battery though it was pretty full. done a reset on the error message when ignition key removed to cler message, no malfunctions when restarted but still appeared whilst driving. got a garage to check out, they say alternator was charging battery, but occasionaly stopped (mainly when a lot of load of load was put on the engine). i suspect that my alternator is faulty and will need replaced. any thoughts on what else it could be, i though the belts maybe loose and slipping, but that seems fine also.