Hello, I’m writing hoping for some advice. I have a 2005 Quattroporto, I just paid $600.00 to have it inspected at the dealership, where I was told everything was good. I’m still having the current problem I took it in for. Sometimes while driving I will get lights to come on randomly, power steering failure, ABS and transmission failure the speedometer needle will also bounce up and down. The RPM needle always seems to stay steady and correct. When I park the car the only light that comes on is the transmission failure and the car won’t start. If I let the car sit over night or for an extended period it will usually start and may even run for several days or a couple weeks with no issues. I have also noticed when I get into the car if I slam the car door hard all the lights on the dash blink on once and then go out. Could my problem be a fuse or relay? Possibly a bad battery. The dealership couldn’t find anything wrong with it. I hate to take it back in at $180 an hour just to be told the same thing. I’m a student with a part time job, money is definitely tight! I basically live on Romain now! Any help would be greatly appreciated.