Ventilated seat timer
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Junior Member
Joined: May 2019
Posts: 15
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2018 E400 Cabriolet
Ventilated seat timer
The fan in the ventilated diver's seat in my car turns off intermittently, though the indicator light on the button remains lit. The dealer says this is normal operation, and that there is a timer that turns the fan off after a certain amount of time. The dealer was unable to tell me the amount of time the fan stayed on, nor was he able to explain why the light remains lit despite the fan not being on.
There is no reference in the owners manual to a timer on the fan for the ventilated seats. The owners manual does indicate the heated seats are on a timer and turn off, but when that happens, the indicator light goes off.
Any insight is appreciated.
There is no reference in the owners manual to a timer on the fan for the ventilated seats. The owners manual does indicate the heated seats are on a timer and turn off, but when that happens, the indicator light goes off.
Any insight is appreciated.
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From: Northeast USA
AMG CLE 53
The fan in the ventilated diver's seat in my car turns off intermittently, though the indicator light on the button remains lit. The dealer says this is normal operation, and that there is a timer that turns the fan off after a certain amount of time. The dealer was unable to tell me the amount of time the fan stayed on, nor was he able to explain why the light remains lit despite the fan not being on.
There is no reference in the owners manual to a timer on the fan for the ventilated seats. The owners manual does indicate the heated seats are on a timer and turn off, but when that happens, the indicator light goes off.
Any insight is appreciated.
There is no reference in the owners manual to a timer on the fan for the ventilated seats. The owners manual does indicate the heated seats are on a timer and turn off, but when that happens, the indicator light goes off.
Any insight is appreciated.
Update - I went for a ride this evening and tested the ventilated seats. With all three blue lights lit, the fan comes on at full speed for a few minutes whether you stop or not. After a few minutes of ventilation the fan stops, or slows enough not to be heard, when you come to a stop. The three blue lights stay lit. I remember reading that in my C400 the fan was designed to do this to reduce cabin noise, however I can’t find any mention of it in the current E Coupe manual.
Last edited by BenzC400; May 25, 2019 at 06:23 PM.
Thread Starter
Junior Member
Joined: May 2019
Posts: 15
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2018 E400 Cabriolet
Thanks so much! That's exactly the information I was looking for.
From this, it looks like the "fan speed settings can be adjusted using the diagnosis tester." And the "timer control of the three levels can be adjusted using the
diagnosis tester." So can I have them adjust it to have the seat ventilation stay on whenever the button is pressed, and not turn down/off simply because I slow down or after 8 minutes?
Will my dealership be able to do that? It makes no sense for the ventilated seats to turn down (effectively off) when you're stuck in stop and go traffic where the ventilated seats would be most helpful, nor does it make sense to have to turn it back on every 8 minutes. I can possibly understand that operation in a non-convertible, but not in a convertible.
Thanks again!
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From: 🇨🇦
W463 G550 / C190 GTC //prev: W204 C63 507 / R170
Interesting, thanks. But why don’t the blue lights change as the timer mode reduces output? That’s what happens with the heated seat - it starts at 3 red lights, then drops to 2, 1, and then 0. The vented seat doesn’t appear to do that, or is it just my car?
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Joined: Oct 2021
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2021 E 450 Coupe
I have a 2021, E450 coupe. I thought for sure I had a problem with my drivers side fan; I left the house and turned it on (3 blue lights) I remember it working on the way to the office, but as I parked I noticed I didn't feel or hear anything (still 3 blue lights), I tried turning on my passenger side and it came to life and blew air no problem, so there must be something programmed in the car they simply haven't disclosed, my car behaved like yours verbatim!
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