Propane Gas Smell while Driving with window open
Thread Starter
Newbie
Joined: Mar 2020
Posts: 2
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From: Fredericton New Brunswick Canada
2020 GLS 450
Propane Gas Smell while Driving with window open
Hello all
New to this site - have a new 2020 GLS 450 and ever since I've received it there is a gas smell (not gasoline) but propane like (actually the additive Ethyl Mercaptan) while driving with drivers side or passenger side window open. More pronouncing smell at 50 km/h. It's been to dealer and Mercedes Canada techs contacted. It now has 4600 km on it so that eliminates any smells from undercoating or manufacturer finishes. This smell has everyone stumped and if anyone has any ideas as to what this could possibly be I'm all ears. I know the solution would be to keep the windows closed but I do like my fresh air on occasion.
New to this site - have a new 2020 GLS 450 and ever since I've received it there is a gas smell (not gasoline) but propane like (actually the additive Ethyl Mercaptan) while driving with drivers side or passenger side window open. More pronouncing smell at 50 km/h. It's been to dealer and Mercedes Canada techs contacted. It now has 4600 km on it so that eliminates any smells from undercoating or manufacturer finishes. This smell has everyone stumped and if anyone has any ideas as to what this could possibly be I'm all ears. I know the solution would be to keep the windows closed but I do like my fresh air on occasion.
Thread Starter
Newbie
Joined: Mar 2020
Posts: 2
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From: Fredericton New Brunswick Canada
2020 GLS 450
no idea but I figured if I could smell it its coming from underhood. The techs had it up on lift and couldn't smell it after driving it for 15 minutes. I bring it into my garage after driving it and can't find the origination of smell and can't smell it when car is stopped and has hood open. Only when driving with one window open does it smell and it's strong enough that my kids notice.
Newbie
Joined: Aug 2020
Posts: 1
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2020 GLS
Propane smell
Yes! This is happening with my Gls 450. I took it into the dealer but they said they didn’t smell it. But every time I get in, especially with passengers, we all smell it! Have you figured it out?
Hello all
New to this site - have a new 2020 GLS 450 and ever since I've received it there is a gas smell (not gasoline) but propane like (actually the additive Ethyl Mercaptan) while driving with drivers side or passenger side window open. More pronouncing smell at 50 km/h. It's been to dealer and Mercedes Canada techs contacted. It now has 4600 km on it so that eliminates any smells from undercoating or manufacturer finishes. This smell has everyone stumped and if anyone has any ideas as to what this could possibly be I'm all ears. I know the solution would be to keep the windows closed but I do like my fresh air on occasion.
New to this site - have a new 2020 GLS 450 and ever since I've received it there is a gas smell (not gasoline) but propane like (actually the additive Ethyl Mercaptan) while driving with drivers side or passenger side window open. More pronouncing smell at 50 km/h. It's been to dealer and Mercedes Canada techs contacted. It now has 4600 km on it so that eliminates any smells from undercoating or manufacturer finishes. This smell has everyone stumped and if anyone has any ideas as to what this could possibly be I'm all ears. I know the solution would be to keep the windows closed but I do like my fresh air on occasion.
Junior Member
Joined: Nov 2019
Posts: 54
Likes: 7
GLS
Hello all
New to this site - have a new 2020 GLS 450 and ever since I've received it there is a gas smell (not gasoline) but propane like (actually the additive Ethyl Mercaptan) while driving with drivers side or passenger side window open. More pronouncing smell at 50 km/h. It's been to dealer and Mercedes Canada techs contacted. It now has 4600 km on it so that eliminates any smells from undercoating or manufacturer finishes. This smell has everyone stumped and if anyone has any ideas as to what this could possibly be I'm all ears. I know the solution would be to keep the windows closed but I do like my fresh air on occasion.
New to this site - have a new 2020 GLS 450 and ever since I've received it there is a gas smell (not gasoline) but propane like (actually the additive Ethyl Mercaptan) while driving with drivers side or passenger side window open. More pronouncing smell at 50 km/h. It's been to dealer and Mercedes Canada techs contacted. It now has 4600 km on it so that eliminates any smells from undercoating or manufacturer finishes. This smell has everyone stumped and if anyone has any ideas as to what this could possibly be I'm all ears. I know the solution would be to keep the windows closed but I do like my fresh air on occasion.
Newbie
Joined: Mar 2021
Posts: 1
Likes: 0
gls 450
Propane smell
The exact same thing happened to me and they bought my brand new Gls 450 back as a lemon in Oct 2020. Does anyone know what causes this to happen? I lost a lot of money on the buy back deal.
[QUO=Andrew Smyth;8003765]Hello all
New to this site - have a new 2020 GLS 450 and ever since I've received it there is a gas smell (not gasoline) but propane like (actually the additive Ethyl Mercaptan) while driving with drivers side or passenger side window open. More pronouncing smell at 50 km/h. It's been to dealer and Mercedes Canada techs contacted. It now has 4600 km on it so that eliminates any smells from undercoating or manufacturer finishes. This smell has everyone stumped and if anyone has any ideas as to what this could possibly be I'm all ears. I know the solution would be to keep the windows closed but I do like my fresh air on occasion.[/QUOTE]
[QUO=Andrew Smyth;8003765]Hello all
New to this site - have a new 2020 GLS 450 and ever since I've received it there is a gas smell (not gasoline) but propane like (actually the additive Ethyl Mercaptan) while driving with drivers side or passenger side window open. More pronouncing smell at 50 km/h. It's been to dealer and Mercedes Canada techs contacted. It now has 4600 km on it so that eliminates any smells from undercoating or manufacturer finishes. This smell has everyone stumped and if anyone has any ideas as to what this could possibly be I'm all ears. I know the solution would be to keep the windows closed but I do like my fresh air on occasion.[/QUOTE]
Junior Member
Joined: Nov 2019
Posts: 54
Likes: 7
GLS
Propane smell
The exact same thing happened to me and they bought my brand new Gls 450 back as a lemon in Oct 2020. Does anyone know what causes this to happen? I lost a lot of money on the buy back deal.
[QUO=Andrew Smyth;8003765]Hello all
New to this site - have a new 2020 GLS 450 and ever since I've received it there is a gas smell (not gasoline) but propane like (actually the additive Ethyl Mercaptan) while driving with drivers side or passenger side window open. More pronouncing smell at 50 km/h. It's been to dealer and Mercedes Canada techs contacted. It now has 4600 km on it so that eliminates any smells from undercoating or manufacturer finishes. This smell has everyone stumped and if anyone has any ideas as to what this could possibly be I'm all ears. I know the solution would be to keep the windows closed but I do like my fresh air on occasion.
[QUO=Andrew Smyth;8003765]Hello all
New to this site - have a new 2020 GLS 450 and ever since I've received it there is a gas smell (not gasoline) but propane like (actually the additive Ethyl Mercaptan) while driving with drivers side or passenger side window open. More pronouncing smell at 50 km/h. It's been to dealer and Mercedes Canada techs contacted. It now has 4600 km on it so that eliminates any smells from undercoating or manufacturer finishes. This smell has everyone stumped and if anyone has any ideas as to what this could possibly be I'm all ears. I know the solution would be to keep the windows closed but I do like my fresh air on occasion.
as. Said in my previous post: there is a technical service bulletin on this. It has to do with relocating a line over the rear axel. I posted this back in September! My car was in for three visits before they fixed it. I am surprised they missed this as the repair is directly from MB!
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Newbie
Joined: Jan 2022
Posts: 3
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GLE 30de
Hi,
We have the same problem with a new GLE 350 de and quite surprised found out this issue has been logged here as we did a lot of research on the internet.
Could you eventually figure what was the root cause of the issue and how it has been fixed?
Thanks,
We have the same problem with a new GLE 350 de and quite surprised found out this issue has been logged here as we did a lot of research on the internet.
Could you eventually figure what was the root cause of the issue and how it has been fixed?
Thanks,
Newbie
Joined: Mar 2022
Posts: 9
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GLS450
I just wish that was enough info to provide. They claim they don’t smell anything and there are no service bulletins to reference. Had a feeling this was going to be the case when I brought it in.
Newbie
Joined: Mar 2022
Posts: 9
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GLS450
did you ever get your issue resolved? MB dealer is playing dumb and so is Mercedes CS.
Newbie
Joined: Mar 2022
Posts: 9
Likes: 0
GLS450
issue resolved. Rerouted vent tube as described above. Took a visit to another dealership. Southampton, ny Mercedes dealer is terrible. Went to Smithtown and they took time to diagnose and fix instead of dismissing my claim.
