Rotton Egg
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Senior Member
Joined: Jan 2011
Posts: 360
Likes: 1
From: SoCal
2018 GLE350
Rotton Egg
I know this is going to sound really strange, but sometimes when I'm driving my car around town, (tends to be when I drive the car hard) sometimes I smell what seems like rotton egg coming through the vents. It's very mild but it's definitely coming from the car and not outside.
Crazy or do you think something is burning up?
Crazy or do you think something is burning up?
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Joined: Jul 2009
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From: Los Angeles
C63
Thread Starter
Senior Member
Joined: Jan 2011
Posts: 360
Likes: 1
From: SoCal
2018 GLE350
Yea my car runs fine as well other than a rough idle which it's always had. But the smell has always been a bit annoying. Especially when someone else is in the car. IE impressing lady friends 
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Joined: Oct 2007
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From: Bay Area, CA
Volvo
I am not saying thats the issue, but thats one of the tall tail signs that its going out.
http://www.popularmechanics.com/cars...repair/2423551
http://www.popularmechanics.com/cars...repair/2423551
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Super Member
Joined: Dec 2007
Posts: 846
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From: ATL
2017 GLS 550
I don't see why you would smell it coming through the vents though, if it were exhaust related. If the C32 has battery in same place as C55 I would say check cabin filter, and check that the battery vent tube is connected. One of the stupidest designs I have seen cabin fresh air intake directly over a vented battery.
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From: NY
'03C32 Obsidian Black, '76Toyota Celica GT TRD, '12R350 4matic Arctic White, '06 ML 350 arctic white
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Joined: Sep 2014
Posts: 85
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Mercedes C32
rotten battery
The rotten egg smell comes from the battery. When charging my battery with an external charger one day I noticed the smell in my car. That time my battery was dying and had some problems. Changed the battery and problem gone. And I second one of the the previous post about stupid design to put fresh air filter over vented battery.
