SWOOSH air noise when locking my car
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Junior Member
Joined: Sep 2019
Posts: 39
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From: Moscow
S-class W221
SWOOSH air noise when locking my car
So whenever park and i lock my car (2007 S-350) I hear something like a vaccum noise like Swoooosh from the vent on the hood, Like the car was sucking air, our pushing air out i cant tell exactly... Im new to S-Class.. is that a normal thing?? does anyone else's car do it?? or maybe the vents are blocked or something?? what does it mean exactly ?
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S500
my car has never released any air from its suspension - in fact pull the fuse and if ambient pressure is static the car will stay the same height for 6 months - if it dumped air in 6 months it would be on the floor...
usually, 98%+ of the time my car makes no noise at all when turning off other than the locking - however on my car if its very hot and humid and or I did a particularity long drive the AC will dump some condense as the key comes out of the ignition straight on to the right bank's red hot CAT - after reading people dispute this and ramble on about something a euro car certainly never does (dumping suspension air) I noticed last summer its much more common for the AC condense trick - and its super loud
.
usually, 98%+ of the time my car makes no noise at all when turning off other than the locking - however on my car if its very hot and humid and or I did a particularity long drive the AC will dump some condense as the key comes out of the ignition straight on to the right bank's red hot CAT - after reading people dispute this and ramble on about something a euro car certainly never does (dumping suspension air) I noticed last summer its much more common for the AC condense trick - and its super loud
.
Last edited by BOTUS; Feb 20, 2023 at 02:44 PM.
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2007 S550
my car has never released any air from its suspension - in fact pull the fuse and if ambient pressure is static the car will stay the same height for 6 months - if it dumped air in 6 months it would be on the floor...
usually, 98%+ of the time my car makes no noise at all when turning off other than the locking - however on my car if its very hot and humid and or I did a particularity long drive the AC will dump some condense as the key comes out of the ignition straight on to the right bank's red hot CAT - after reading people dispute this and ramble on about something a euro car certainly never does (dumping suspension air) I noticed last summer its much more common for the AC condense trick - and its super loud
.
usually, 98%+ of the time my car makes no noise at all when turning off other than the locking - however on my car if its very hot and humid and or I did a particularity long drive the AC will dump some condense as the key comes out of the ignition straight on to the right bank's red hot CAT - after reading people dispute this and ramble on about something a euro car certainly never does (dumping suspension air) I noticed last summer its much more common for the AC condense trick - and its super loud
.
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Joined: Feb 2009
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From: Brooklyn, NY
2007 S550 4Matic 2013 S550 Base
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From: Southern US
2010 E550, 273 Engine: 2012 S550, 278 Engine
So whenever park and i lock my car (2007 S-350) I hear something like a vaccum noise like Swoooosh from the vent on the hood, Like the car was sucking air, our pushing air out i cant tell exactly... Im new to S-Class.. is that a normal thing?? does anyone else's car do it?? or maybe the vents are blocked or something?? what does it mean exactly ?
When you stop the car it raises above the set level obviously as the down force disappears. When you exit the car and lock it the Airmatic lets air out from the springs to bring it back to set height.
My car does it from locking it and I think it will lower down also if it sits still long enough without locking and even in traffic if stop is long enough.
It will not lower immediately when you stop as it would be silly to do that each time you stop at traffic lights for a short time so when you lock the car it knows that driving is done and it lowers.
This is how my 2012 S550 works and the same goes with my 2010 E550 and on top of that my 1985 Lincoln Mark VII LSC that I had at one time also did it.
Perfectly normal to hear that air release and it tells you Airmatic is working. If you stop hearing it you might have a problem.
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1983 Nissan Shltbox
Mine too. I just assumed the system was making self-leveling adjustments and purging. Nothing that ever concerned me. These cars are still doing all kinds of crap after you turn them off before they actually go to sleep.
But I will be looking into what Lotus mentioned, now that he mentioned it, while I replace my struts tomorrow.
But I will be looking into what Lotus mentioned, now that he mentioned it, while I replace my struts tomorrow.
