When I press the brakes in a car, there is a sort of hissing, almost compressed air sound coming from the brake pedal. What causes that? - Quora
Why does the brake pedal in automatic cars stiffen if you press the brakes while the engine is off? - Quora
![I have a 07 is250 and this is the 1st time this happens. Anyone know how to start the car when the brake pedal is hard to press and not starting?? : I have a 07 is250 and this is the 1st time this happens. Anyone know how to start the car when the brake pedal is hard to press and not starting?? :](https://preview.redd.it/kf6jzfi6mt861.jpg?width=640&crop=smart&auto=webp&s=4319a611cfd8815536bbe8627bc2fce89ea92012)