Hi - friend of mine has this Scenic, which won't hold its battery charge. Symptoms are that when left for a day or so, won't turn over fast enough to start. However, it will start as nomal if the car is locked manually by key and not locked with 'plipper' (ie so the alarm is off, but car is locked). Battery was changed earlier this year. Anyone had a similar expereince and managed to cure it. thanks?