Is it normal for a new automatic transmission car to make noise when stepping on the brake and turning the steering wheel?
2 Answers
It is normal for a new automatic transmission car to make noise when stepping on the brake and turning the steering wheel. This could be due to the break-in period of the new car, or it might be caused by sand particles getting between the brake pads and discs, resulting in friction noise. Automatic transmission gear classifications: Generally, the gears of an automatic transmission car can be divided into P, R, N, D, S, L, and M gears. Precautions for driving an automatic transmission car: Driving an automatic transmission car using only the parking gear P, reverse gear R, neutral gear N, and drive gear D can fully meet the needs of general driving. However, in some special driving environments, other functional gears may be required. Therefore, if the correct control method is chosen, an automatic transmission car can perform better than a manual transmission car. When waiting at a red light, whether to use N gear or D gear depends on personal preference. Temporarily stopping and holding the brake in D gear will not harm the car, because the torque converter in the transmission is equipped with a reaction wheel with a one-way clutch, which amplifies the torque from the engine crankshaft.
I just picked up my new car last week and had a similar situation, so I specifically asked the master technician at the 4S dealership. He said that new brake discs and pads need a break-in period, and before the anti-rust coating on the surface wears off, the edges of the brake pads might make a clicking sound when turning. Additionally, the universal joint of the steering gear can produce slight operational noises at extreme angles, especially in models with electronic power steering. He advised me to drive a few hundred kilometers first and observe. If the noise persists after the break-in period, then I should check the ball joints or suspension bushings. I remember it was particularly noticeable after a rainy day, and the technician mentioned that rubber components tend to harden in cold conditions, making them more prone to noise. During the break-in phase of a new car, it's important to be patient. As long as there's no sharp metal grinding sound or continuous steering wheel vibration, there's generally no need to worry too much.
