Hello everyone, I currently have a 2017 Land Cruiser 79 double row with 90,000 kilometers on it. It was a car that was retired from a mine. The problem now is that there is a loud knocking and ringing sound after the car is started. It will not disappear with the speed, and it will not disappear after the car temperature rises. It was really torturous. I asked the car repairman and he said there was no big problem.