Anti-Freeze smell

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Feb 14, 2022 | 02:12 PM

Pbl1

Thread Starter

Junior Member

Joined: Jan 2020

Posts: 61

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'21 E63 S wagon, 2017 NSX, 2013 458 Italia, 1963 P1800

Anti-Freeze smell

After a good hard drive a few days ago I can smell anti-freeze inside my garage. No leaks I can see or spills so wondering if it could just be an out gassing issue from coolant expansion as I have noticed this before but seems to be more prevalent this time, perhaps the colder air temperature and closed garage doors. Anyone else experience this?

Thanks,
Peter

Feb 14, 2022 | 03:08 PM

David Bogle

Member

Joined: Aug 2019

Posts: 96

Likes: 28

From: New Orleans, La

2018 E63s Estate

happens to my 2018 E63 also at times. i recall several threads on this a while back.
came down to "don't worry about it"

Feb 14, 2022 | 03:48 PM

Cylinder Head

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iTrader: (1)

Joined: Jul 2006

Posts: 6,760

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From: Seattle

'19 E63S, ‘16 CLS63 RIP, '09 E63 Gone, '06 M5 Gone, '97 Supra TT Gone

I get that smell too. No issues, no leaks. I just ignore it. I also have the "steamy lower radiator" issue which is also nothing apparently.

Feb 14, 2022 | 04:44 PM

WildWolf

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Joined: Jan 2010

Posts: 179

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From: NorthEast United States

2019 E63s

I had that smell and some smoke at one time. They had to replace a pump behind the bumper.

Feb 14, 2022 | 08:30 PM

E634Me

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Joined: May 2017

Posts: 1,726

Likes: 605

From: Southern California

2018 E63S AMG

I occasionally get it, but what is more frequent is a hot oil smell. Dealer says it is normal and the car doesn't burn oil - or at least I've never had to add any between services.

Feb 16, 2022 | 08:59 AM

mike10872

Junior Member

Joined: Jun 2021

Posts: 30

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2018 Mercedes Benz GLS 450

2018 GLS 450 @ 73k miles bought it used @ 59k non MB dealer. smell was there back then and still get it sometimes, no visual leaks, I guess it's normal.

Feb 17, 2022 | 10:35 AM

Sunbeltgolfer11

Super Member

Joined: Mar 2021

Posts: 509

Likes: 217

From: Beech Mountain, NC

E63s SL550 GL450

I get it ocassionally on my 2021 E63s. It seems to be on days that it is hot outside when driving. No leaks anywhere, apparently just fumes from the sytem. I did notice that the engine temperature on these runs quite high and the dealer assured me that is the normal temperature. No explanation from them on why I'm smelling it.