2001 Ford Taurus lighting problems

The turn signal switch won't stay in place under some conditions. Most commonly it won't stay if the steering wheel is at the opposite direction, eg. Trying to put it at 'left' while the steering is still toward 'right'. It happens to me often because I need to make a sharp left turn right after I leave my garage, while the latter is a sharp right turn. Sometimes this problem also occur even the steering is straight ahead. It occurs when the car is brand new so I doubt it's a design flaw.

Tl* the contact owns a 2001 ford taurus. The contact stated that the brake lights illuminated continuously while the brake pedal was not being depressed. The failure recurred multiple times. The vehicle was not included in NHTSA campaign number: 04v106000 (exterior lighting). The manufacturer was not notified of the failure. The approximate failure mileage was 120,000.