Had the same problem. Apparently common with on all pajero models. Even the older ones. Check internet resources.
Finally got the noise fixed. They said they replaced a small controller card under the handrake or somewhere.
The vibration thing came up later at 60k and they fixed that by replacing a couple of ignition coils and recalibrating the whole system.
Force them, or they will do temporary fixes until you have run out of warranty cover and make you pay.
I am now facing the LHS front suspension Tak-Tak sound at low speeds.
Will continue tolerating temporary fixes until I blow my top off again.