I bought a 95 C-280 last fall. I realized this summer that during the peak heat times of the day -say from 10:30am to 9pm- When I turn the turn signals either left or right, nothing happens. Early in the mornings or late evenings, if it's not too hot in the high 80s ++ they work just fine. Anyone knows what could be the issue? Also the wiper wont work at all. Any possible suggestions? I also just moved to the Lexington KY area and need a good mechanic who works on MBs. Any referrals?