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So we have put like 2000 miles on our 2014 E350, V6 4matic with 50k miles on it. When the wife pulls into the garage there is a very strong burning smell for a half hour or so. I don't see any fluids on the floor nor any real signs of fresh oil. The belt looks good as well. Never owning a Mercedez, I don't know the quirks and/or problems with this car. Any tips, tricks, thoughts would be great.
I would guess it is a burning rubber smell based on how thick it is in the air.
Thanks
Thom
Last edited by no1tmorrow; 10-30-2020 at 03:04 PM.
Personally I wouldn't worry.
I'm no expert but I do notice that modern cars seem to emit strong 'burning' odours regularly.
I rarely park my cars indoors but even outside after a reasonably short drive I am often surprised at the apparent heat and smells!
Personally I wouldn't worry.
I'm no expert but I do notice that modern cars seem to emit strong 'burning' odours regularly.
I rarely park my cars indoors but even outside after a reasonably short drive I am often surprised at the apparent heat and smells!
lol I am thinking the same, waiting to see if something catches fire, then I’ll know where the problem is.
but figured I would ask the group then see what you all said.
2020 GLS450 / 2024 Ford Bronco / (former) W212 4-matic 350 sport package
Mine started doing this too not too long ago - also a 2014 V6. On mine, it’s a small oil leak (see my post on here recently), down the front of the engine. No drips, but just enough to get on the engine itself. The heat is cooking it and it stinks just as you describe. Pop the hood, lift off the front engine cover piece and take a look towards the top/middle of the front of the engine.
Mine is going into the shop next week for an oil change and to have the leak fixed. Very common is my understanding.
CLIENT STATES SMELLING A BURNING OIL ODOR
Cause: DW
Correction: 015702 REMOVE/INSTALL/SEAL FRONT COVER ON LEFT CYLINDER HEAD
Tech Number: 533 Labor Type: W67
015703 REMOVE/INSTALL/SEAL FRONT COVER ON RIGHT CYLINDER HEAD
Tech Number: 533 Labor Type: W67
Part Number Part Description Qty List Parts Total: No Charge
003-989-98-20-10 SEALANT MB 1
000000-006365 HEXALOBULAR BOLT 16
016-997-50-45 SEAL RING 4
276-141-01-80 FLANGE GASKET 6
000-990-39-24 SCREW WITH FEATURE 12
38941 LEAKING UPPER FT COVERS FOUND BOTH UPPER FT COVERS LEAKING---RESEAL BOTH UPPER FT COVERS & REPLACED ALL
4 CAM MAGNET O-RINGS
I looked all over front of engine and found old oil, so I cleaned and cleaned. Now I will wait and see. "nc211" the areas in your photos are very similar looking to mine, just less oil and it all seemed old but a good cleaning will hopefully show the mystery...
To me, I would say rubber but plastic is always a possibility (thanks for making me question my nose).
what would be plastic smell ?
with a merc? In my experience a SAM that is shorting but then you get a ton of lights, malfunctions.....and in my case (w211) a car that starts itself.
Kongistiger,
I will do a full underside inspection. LOL I have acutally had the grocery sack too, years ago. I did a front inspection, laying on the ground, but will jack her up and giver her a proper looking at.
So we have put like 2000 miles on our 2014 E350, V6 4matic with 50k miles on it. When the wife pulls into the garage there is a very strong burning smell for a half hour or so. I don't see any fluids on the floor nor any real signs of fresh oil. The belt looks good as well. Never owning a Mercedez, I don't know the quirks and/or problems with this car. Any tips, tricks, thoughts would be great.
I would guess it is a burning rubber smell based on how thick it is in the air.
Thanks
Thom
Mine makes an occasional burning smell at shutdown. I know for sure that it is the oil vapor vent valve cover at the rear of the passenger side cylinder head. I have a replacement and just got a wrench that I hope will permit me to remove it.
People keep in mind that the w212 ( and benz in general) start the water heater for the windshield water fluid, and it is so strong it melts plastic to the point it splits the container.
We finally got the car out after I have wiped down the area, on the drivers side. It looks like it is leaking under the metal plate that is held in with the torx heads. Looks like the majority of the leak is where the blue headed torx is at. Looks like a doable project but never working on a Benz, I am cautious and would like the experts (you all) on what that plate is called and is it that big of a deal?
Thanks and happy holidays.
People keep in mind that the w212 ( and benz in general) start the water heater for the windshield water fluid, and it is so strong it melts plastic to the point it splits the container.
It starts to happen the colder it gets.
Is this why nearly ever Benz car I've had ends up with a windshield washer fluid leak? Nothing on the W212 yet but I am in GA.
Is this why nearly ever Benz car I've had ends up with a windshield washer fluid leak? Nothing on the W212 yet but I am in GA.
Yes, the rubber grommet that the washer pump sits in leaks, or at least it did on seven of my early Benz's as they got old, the cars with headlight washers had two grommets and two pumps to leak.
2020 GLS450 / 2024 Ford Bronco / (former) W212 4-matic 350 sport package
I can tell you on mine, which I believe also had this oil leak, the odor is completely gone now. I checked it a few times during my 2,400ish mile road trip over thanksgiving and no odors whatsoever. So for me, it was definitely the oil cooking on the engine exterior as it got hot.
The cost of just the oil leak fix was around $1,300 on the itemized bill. They had to take off quite a lot to get to it all. The other area that I am learning is pretty common for oil leaks is the cam magnet covers. Think those are very easy to fix though, lots of YouTube videos on it, seems quite common.
10-30-2020, 03:01 PM
