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Anyone know of this???
plastic burning smell from the vents, there are flaps inside the heater box that deteriorate and give out a burning smell, i was wondering if there is any way to get to them from the blower side or from the centre vents??
Anyone had this fixed??
Are your cam plugs or centrifuge cover leaking? Those could be what you are smelling.... they are located on the rear of the engine...
Hi, no they are dry, no oil leaks what so ever, I'm sure it's inside the box, I have seen it already big time ago, and I know what it is, just wondering if there is a better way than removing the box, I can't remember what the flaps were for
I have seen it in some w211 and some w203, not sure why but the heat just melts the rubber that is used on the flaps and gives out a funky smell when the heater is on
Anyone know of this???
plastic burning smell from the vents, there are flaps inside the heater box that deteriorate and give out a burning smell, i was wondering if there is any way to get to them from the blower side or from the centre vents??
Anyone had this fixed??
We were getting a similar smell in the cabin. We never thought of the seats being the source, Until one cold night after driving about 70 miles, when I got out i felt something warm on my lower left lumbar. When i reached to feel /rub.... to my surprise my suit jacket had a burnt hole through it. ?????@#$$!!! I don't smoke or carry any lighters, when i looked at my drivers side backrest. .... sure enough BURNT HOLE on the corresponding location. My e320 is an 08 (out of warranty ), if i had carried matches in that pocket, something really bad could have happened. I don't use the heated seat anymore. Anyone have any suggestions on what I should do?
There is some painful smell from the heater. After some investigation (googling and talking with other guys having e350s), I believed that the coolant is leaked around the heat core. I visited the Bentz service center and asked them to check why. The service center staff checked, but replied to me that he could not find anything wrong. The smell is painful especially for my nose and throat. I could not endure any more. I visited the private repair shop and described the problem. The repair shop engineer agreed with me. We agreed to repair and he disassembled the dashboard and heat core housing. He found the coolant is leaked a little bit. also found that the flaps in the heat core housing have been melt down. I believe both the hot coolant and hot plastic in a liquid status made the painful smell. I hope this help for all other people. Also I got the clue from your posts here
heater core housing
Last edited by Woohyunjang; May 24, 2019 at 02:54 AM.
Seems like i'll be doing this in the future, same symptoms.
f4i 954 (or others if he's no longer around), can anyone describe the process on replacing these flaps? Does the whole unit just get replaced? Watched the video of the full disassembly but f4i mentioned no need to remove the entire box, and the diagram seems to show this piece is above the evaporator box.
Wondering how much of the dash needs to come out, what can be replaced, etc.
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