Hello I'm new to this forum, I see people are asking technical concern here.

I have a g37x 2010, I start noticing a noise when I start and turn off my car.
It only happens sometimes if I drive it a bit and then start it/turn it off. It Never happens on a cold start.

Other than that the car run pretty fine, no issues!

I'm bit worried that it could be a bigger problem, I have recorded 2 videos and you can clearly hear the noise at startup like a clank ( metal on something) and when I turn it off it looks like a squealing. They both appears together:

https://drive.google.com/file/d/1MGV...w?usp=drivesdk

https://drive.google.com/file/d/1MJ7...w?usp=drivesdk
Can you help me identify the cause ?

Thanks.

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The click/clank sound you're hearing could be a broken motor mount. The squeak sounds like some sort of motor. When you turn off these G's the doors automatically unlock. When my door lock motor was going out it would squeak like that. Could possibly be the same thing here.
Any reputable shop should be able to do a simple inspection of the motor mounts, and just do a general inspection/investigation to find what the clanking sound is from. I'd check to see if your door(s) are actually locking and unlocking when they should be.

 

Ok thanks for you answer I will definitely take a look a the door motor for the second noise.

For the click/clank noise it only happens if the car is warm ( if I drive it and then stop/start). A broken motor mount would cause the noise no matter if the car is cold or warn, no?