mhabashy16

So i have a 2017 C300 coupe. This problem has been going on since last year june, which is when i got the car.

There is a noise coming out of the engine bay whenever the car sits parked outside on a hot day.

I live in a building so i park indoors, however this sound happens after driving 15-30 mins (normal driving, not aggressive) and then parking the car for at least 30 mins to an hour.

Here's a two links to 2 videos of the issue:

1)
2)
I've spoken to my local dealer. What they said is that theres an electrical coolant pump that runs when the car is on. Also, theres an auxiliary pump that runs when the car is off. For the past year they have been telling me its normal. However, i went 2 weeks ago and FINALLY had them acknowledge that it is NOT normal. I have an appointment on May 28th.

Anyone has this issue or knows what it could be caused by?

Jan AMG

mhabashy16

Yes for sure not!! They said they want to re-create the issue and use a stethoscope to locate where the sound is coming from.

I thought i'd post my problem here, maybe someone familiar with the issue will help me out.

C43-AMG-Sedan

That's not normal. I also have a weird noise coming from the engine but, it's the fan because of a little aggressive driving. Try and see if you can lemon the car.

mhabashy16