Ive recently got an error on the idrive saying 'level control system failure' However i have not felt any difference with the cars ride, and just now the error has gone! it came on for at least 1 day and then just went?? is that normal, to check it, i have gone around corners at least 30mph and its fine? how can this happen? was it a sensor problem? i still have warranty on the car so i can get it fixed no problem,but is it worth it as the error has disappeared.