White smoke

Jul 2, 2018 | 07:26 PM

KellyE1975

Thread Starter

Newbie

Joined: Jul 2018

Posts: 4

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GL 350

White smoke

White smoke coming from exhaust. Check engine light on. Car runs fine. Seems to be more smoke when air conditioning on. What could be the issue?

Jul 2, 2018 | 08:17 PM

a64armt

Member

Joined: Apr 2015

Posts: 84

Likes: 7

2018 E400 4matic coupe / 2015 GLK 250 BT / 2008 F250 Diesel

Could be a few things. How are your fluids? Are you low on coolant, etc?

Gonna need more info including year, model, engine, etc.

Jul 2, 2018 | 11:30 PM

KellyE1975

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GL 350

It’s a 2015 SUV diesel gl 350 ...V6 with 48k miles

Jul 2, 2018 | 11:32 PM

KellyE1975

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Joined: Jul 2018

Posts: 4

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GL 350

Quote:

Originally Posted by a64armt

Could be a few things. How are your fluids? Are you low on coolant, etc?

Gonna need more info including year, model, engine, etc.

will check fluids tomorrow too ...gl 350 diesel 48k miles v6 engine

Jul 3, 2018 | 12:02 AM

kombifan

MBWorld Fanatic!

Joined: Nov 2017

Posts: 1,218

Likes: 149

From: Bethesda, MD

2010 Mercedes GL450; 2000 Mercedes ML55 AMG; 2016 VW GLI SEL Stick!!!

Quote:

Originally Posted by KellyE1975

will check fluids tomorrow too ...gl 350 diesel 48k miles v6 engine

your under warranty! I hope.

Take it to the dealer and get the elw as soon as possible!

Jul 3, 2018 | 08:09 AM

KellyE1975

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Joined: Jul 2018

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GL 350

Quote:

Originally Posted by a64armt

Could be a few things. How are your fluids? Are you low on coolant, etc?

Gonna need more info including year, model, engine, etc.

it doesn’t smoke on start up...it only does it after been running awhile. Think it might be coolant too.

Jul 5, 2018 | 08:55 PM

Jpkcpa

Member

Joined: Apr 2016

Posts: 142

Likes: 23

2013 GL350

White smoke? Or white vapor? Vapor dissipates immediately. Smoke takes a bit longer. If vapor, STOP immediately. A very very long time ago, I too had white smoke and figured i’d take Car in for service (not an MB). Long story short, it wasn’t smoke and engine seized before I got it checked out. Lesson learned.

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Jul 7, 2018 | 11:46 AM

spoole100

Newbie

Joined: Aug 2014

Posts: 11

Likes: 0

2015 GL350

Does the exhaust smell like ammonia? If so then it is a failure of the SCR adblue system. Take it to the dealer since you are under warranty. They will most likely have to replace your entire exhaust.

Jul 17, 2018 | 03:36 PM

#10

dieselskillet

Newbie

Joined: May 2018

Posts: 2

Likes: 0

From: Atlanta, GA.

2014 MB E250 RWD

Quote:

Originally Posted by spoole100

I have a certified used '14 e250 BlueTec w/ 45k miles and this just started to happen to me today. Started with an amber engine light on indicator on the way to work and just now on the way home noticed white smoke our of the exhaust and VERY strong ammonia smell. Have an appointment with the local MB service department in the am. I hope it is covered under warranty!

Jul 30, 2018 | 05:45 AM

#11

safetywork

Newbie

Joined: May 2018

Posts: 1

Likes: 0

2014 E250

Quote:

Originally Posted by dieselskillet

Dieselskillet, I just had the same issue as you described on a '14 e250 Bluetec with 42k miles....same symptoms as you described. I got my car CPO, my repairs were covered under warranty. My repair order noted that the temperature sensor was faulty, after the sensor was replaced, the tech noticed that the valve was sticking and thus the car had to stay another couple of days waiting for parts. Car is back but under load, I noticed it would puff a huge blume of grey smoke. The chrome exhaust tips were coated with a yellowish goo. I took a picture and sent it to my service advisor. I washed the car (making sure the exhaust tips were clean) and continued driving. 900 miles later, the smoking has lessened, there is slight yellow tint on the exhaust pipe.

Please keep us posted on your experience.

Thanks,