So, driving down the road...starts to rain...so, I turn on my wipers. Then run fine for 5 min., then stop midway on window. Jerk a little, and eventually go all the way down. Turn off switch from 20 seconds, turn back on, and they never stop again!!! It has done this several times, and every time, after I shut them off for 20 seconds, there is no problem. Thoughts??? Was very scary the first time, since I had just bought the car!!!!!