Mynewlypurchased used Note has dealer whom sold it On Off switch broken permanantly switches itself on or off every wg 10 mins driving at.Option? Wise disenable on off switch permanantly.Does this switch faultmean likely other electrical faults.No fault lights otherswise showing on Dashboard. Is faulty On off operating dangerous any chance at could cut out whilst driving? Is On Off failure MOT fail issue? Suggestions please.Had garage do electronic diagnosis and lectrics no other faults found.