general problems of the 2004 Volkswagen Jetta

My car's signal light switch malfunctions periodically leading to the signal light becoming stuck in a left or right hand turn position blinking at a fast speed. This is occurring about 25% of the time while driving. As a consequence I have to make unsafe lane changes (eg. When changing into r lane the signal light be stuck in the left hand blinking sequences from the previous left turn). To correct the failure the signal light arm has to be replaced.

I own a 2004 Volkswagen Jetta wagon tdi. The original owner sold the car to me and complained of poor lighting. I have repeatedly brought the vehicle to dealership and the problem has not been resolved. There is no peripheral lighting and the lights do not project far enough to see and have dark spots. I hit a bear 6 wks. Ago and directly blame the lights for an impaired ability to react. The plastic lens are also a problem as they yellow and scratch over time diminishing visibility by approx 50%. A problem that does not occur with glass lens and is particularly bad in places like colorado where magnesium chloride is applied to the roads in winter.