Help guys, I have a 1996 S320, a couple of problems, First my volt lite is on at dash, intermittantly, when pressing brake pedal, lite will go out momentarily. secon, my Econo air button is stuck in its position, cannot change climate control to any other setting, and lastly, intermittanly my oil lite will come on, I am useing top grady synthetic oil and the oil level in never low....thanks