tlkl01

Asking if the high pitched whine is normal for a 2016 GL 350. Doesn't start until about a minute after the engine has been started. I don't recall hearing it before. My GL has 11k miles on it.

DC-BENZ

I hear it but it doesn't sound unusual. Sounds like some sort of vaccum pump or Airmatic. Do you hear it when you finish driving? I can try mine but I need to know if you have your AC -Heat/Cool on.

tlkl01

AC was not on. I did have the fan blowing regular air. It was still making the noise when I completed my drive. I turned the car off and turned it back on and it started again after about one minute and the sound came back. Thanks for checking!!

DC-BENZ

It seems to be just turbo whine. I don't think it's anything negative. FYI, I just tried it, 2013 GL350.

tlkl01

Thank you!!