Odan

Hi Everyone,
I'd asked this question in the wrong category earlier, so please pardon me if you'd seen it before.

I just got a 2015 ML63 but not certain how the airmatic system should work;
each time I lock the truck after a drive, its drops an inch or so with a hiss of air. And I do hear a faint whir near the front left wheel for some minutes.
Is this normal function or an indication of something wrong?

Thanks for any advise in advance.

mdotk

That is normal

Odan

Thanks a lot!