This is my experience. When I drive the car, stepping on the acceleration will mildly trigger a takk takk takk ratling noise, coming from engine bay, left side. Today went to service center and they say change the grounding cable. After that, no more noise.

The noise does not appear every time you step on the acceleration, but it does appear very consistently over a period of time. Will disappear once you let go of your foot.

Luckily now it is gone. Claimed warranty. 4 year old car.