When the car starts normally and the brake pedal becomes hard after driving a certain distance, what could be the reason?

After connecting CarPlay, the display is normal but the sound plays on the phone instead of the car. What could be the reason?

It seems like your car's brake pedal is hard to press in the morning when starting the engine, but it becomes lighter after the engine is on. This issue didn't exist before, and you're wondering if it's due to a vacuum pump leak. The dealership mentioned it doesn't affect driving. What should you do?

2019 Changan Yuexiang, after normal driving and parking, when trying to start the car again, the brake pedal is hard and the car won't start. What should I do? Urgent!

What could be the reason that there seems to be something blocking the brake pedal when I press the brake on a 207?

What could be the reason that the brake pedal cannot be pressed down when turning the steering wheel fully or reversing?

When the car is not started, the brake works, but after starting, the brake pedal goes straight to the floor. What could be the issue?

What could be the issue if the steering suddenly becomes heavy and hard to turn, even though there's enough fluid?

The battery status is normal. What could be the reason for not being able to start the engine after turning it off?

When the vehicle just starts, there's a whistling sound from the front wheels, but it disappears after driving for a while. What's the reason? Could it be that a small stone got into the brake disc?

When the car starts normally and the brake pedal becomes hard after driving a certain distance, what could be the reason?