PLEASE HELP. I was detailing my car to put up for sale and my 4 year old son got in and pressed the SOS button and turned on all the lights. I them went away for a few days and when I returned the benz was dead. we charged up the battery and tried to start. the relay was tripping so I replaced it, which started making a ticking sound right away again. the car wouldn't even try to start while reading full voltage on the battery. a code came up reading RESTART SYSTEM MALFUNCTION and for a brief second KEY NOT FOR VEHICHLE. the dealer in Naniamo (Vancouver island) keeps failing to call me back. Any ideas would be greatly appreciated!