LOL @ Merc
Mercs especially S Class do have alot of electrical problems. My friends dad had a 2001 Merc S Class, he spend alot of money in sorting out the electrics such as seat, navigation etc and in the end the car had an electric fault and caught fire, ended up in passenger seat, dash, roof, door etc burnt out. So it was taken back by insurance and broken for parts later as it wasn't repairable (would've costed alot to repair)