Romin

I've had this problem numerous times, I always ended up changing the windshield. They are relatively cheap. 300 including labour?

They have to replace it for you, don't take a no for an answer. One of the industry insiders told me to get something changed or repaired take the car in an outside garage, make them diagnose it, then take it back to the stealership and force them to take a look at the necessary part, even if they don't accept it, ask them to replace it, eventually they'll have to do it. And, I have a FJ cruiser I have the same problem, it appeared after I changed my tires. There's a initial shake as you press the brake pedal and then it goes away as you press harder.