Hi Folks,
Here is a recorded video for an abnormal metal knocking sound when the ignition and engine is switched off: https://youtube.com/shorts/MRiBoI4Z3xw?feature=share. This is a 2017 mazda 6.
This is how the knocking sound is produced:
1. drive back from a normal trip, drive forward into garage
2. shift to neutral, turn on electric parking brake, shift to parking
3. turn the ignition off. Exactly at the time when ignition and engine is switched off, the sound is heard.
I am not sure if anyone experienced this. I took the car to dealer and they diagnosed it to be the parking brake actuator, the sound comes from the rear. However, I kind of doubt the diagnosis result, because:
1. I think I heard the sound from the front, not from the rear.
2. I don't understand why there is not such sound when I turn on/off the parking brake. How would turning ignition off cause that sound from the parking brake actuator?
Thanks, Guys!
Here is a recorded video for an abnormal metal knocking sound when the ignition and engine is switched off: https://youtube.com/shorts/MRiBoI4Z3xw?feature=share. This is a 2017 mazda 6.
This is how the knocking sound is produced:
1. drive back from a normal trip, drive forward into garage
2. shift to neutral, turn on electric parking brake, shift to parking
3. turn the ignition off. Exactly at the time when ignition and engine is switched off, the sound is heard.
I am not sure if anyone experienced this. I took the car to dealer and they diagnosed it to be the parking brake actuator, the sound comes from the rear. However, I kind of doubt the diagnosis result, because:
1. I think I heard the sound from the front, not from the rear.
2. I don't understand why there is not such sound when I turn on/off the parking brake. How would turning ignition off cause that sound from the parking brake actuator?
Thanks, Guys!