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2017 Heated / Cooled seats TSB?

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Just continuing this from the other thread,

 

So the heating portion of the seats seam to work fine. The cooling portion, not so much.

Is the heat delivered by air or heating elements? I hear a blower come on when I use cooling but not with heat even though they get warm.

It's been mentioned that the cooling sucks on the 2017 and there might be a TSB, does anyone know the number?

Now that it's cold out I won't need cooling till the spring.

I just want to be prepared for the warm weather. (It can't come soon enough!)

Thanks

Lenny

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Just continuing this from the other thread,

 

So the heating portion of the seats seam to work fine. The cooling portion, not so much.

Is the heat delivered by air or heating elements? I hear a blower come on when I use cooling but not with heat even though they get warm.

It's been mentioned that the cooling sucks on the 2017 and there might be a TSB, does anyone know the number?

Now that it's cold out I won't need cooling till the spring.

I just want to be prepared for the warm weather. (It can't come soon enough!)

Thanks

Lenny

Where was that mentioned, any links?

 

My 2017 seats heat and cool great.

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I was able to check and the 17 has no official seat heating/cooling bulletins. The 16 has 2 of them.

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I was thinking my cooled seats sucked too. Then I had to do PT in the poring rain one morning and while driving home, I accidently turned on the air on the seat. To find out that the back cools very very well!

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I believe the heating feature is done with electric heating elements (pretty much just resistors) positioned throughout the seat (similar to an electric heating blanket) but the cooling feature is A/C air flow piped into seats that exits thru the perforated inlays and onto your back and arse (hence the blower sound when turned on).

Edited by roots57

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I believe the heating feature is done with electric heating elements (pretty much just resistors) positioned throughout the seat (similar to an electric heating blanket) but the cooling feature is A/C air flow piped into seats that exits thru the perforated inlays and onto your back and arse (hence the blower sound when turned on).

Not true...its a TED unit that controls both. If you had access to the service manual you would be able to see for yourself.

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The seats with heat only have just a heating element. With air conditioned seats, like JMR061 said, the current flows on way through the TED and the seat heats, the opposite way and it cools. The difference between them, in the heating mode the fan only comes on low, in cooling mode is depends on which of thr three levels you set the control.

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The TED (thermo-electric device) is called a Peltier device and it heats or cools depending on the polarity of the current.

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The seats with heat only have just a heating element. With air conditioned seats, like JMR061 said, the current flows on way through the TED and the seat heats, the opposite way and it cools. The difference between them, in the heating mode the fan only comes on low, in cooling mode is depends on which of thr three levels you set the control.

I don't want to sound stupid, but what does TED stand for? Also, when in heating mode, if the fan is on low, what controls the temperature when you change settings on the switch (hi, low, medium)? I I'm assuming some kind of blend door. But You know what happens when one assumes.....

In cooling, the switch seems to change the fan speed.

Thanks guys

Lenny

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The TED (thermo-electric device) is called a Peltier device and it heats or cools depending on the polarity of the current.

You answered before I finished typing my question.

Lol

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Not true...its a TED unit that controls both. If you had access to the service manual you would be able to see for yourself.

 

Yes I just figured this out myself, it uses thermoelectric coolers to reduce the temp of the ambient air being sucked into the port below the seats. Pretty cool. I'm glad it doesn't use A/C flow.

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Yes I just figured this out myself, it uses thermoelectric coolers to reduce the temp of the ambient air being sucked into the port below the seats. Pretty cool. I'm glad it doesn't use A/C flow.

 

The Peltier devices also produce heat. It's a pretty cool device.

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Peltier device. I learned something new, thanks! And they say you can't teach an old dog new tricks... If you really want to get "Edgy" can someone explain how it does what it does? ;)

Edited by Chipster

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It transfers heat between 2 plates with semiconductors. Depending on which side you're on and/or the polarity of the current you get heat or cold (lack of heat).

 

A fan blows air across the device.

 

Think of it like a miniature window air conditioner - it blows cold air on the inside and hot exhaust air on the outside. But it does it with electrical components instead of compressed gas.

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So the waste heat (in the cooling mode) goes into the interior of the car?

 

Technically yes, but it is dissipated thru a heat sink, so I doubt it would ever make a substantial difference in cabin temp.

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Anyone else have zero airflow in the seat back but plenty on the seat bottom? I noticed this yesterday in my 2018, only 800 miles on it so I don't think it's a dust / blockage issue.

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Anyone else have zero airflow in the seat back but plenty on the seat bottom? I noticed this yesterday in my 2018, only 800 miles on it so I don't think it's a dust / blockage issue.

 

Generally, the seat back`s cooling effect is weak & hard to feel, especially compared to the seat bottom. I had the same issue with my previous MKX. There was a TSB for 2015 models & early build 2016's, but later builds & 2017-2018 models already have the newer seat back TED units. If you turn on the seat hear, do you feel the heat in the seat back? If yes, then there is no blockage.

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OT, but evilkid, did you trade in your Edge, or add the 2018 to the collection?

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Generally, the seat back`s cooling effect is weak & hard to feel, especially compared to the seat bottom. I had the same issue with my previous MKX. There was a TSB for 2015 models & early build 2016's, but later builds & 2017-2018 models already have the newer seat back TED units. If you turn on the seat hear, do you feel the heat in the seat back? If yes, then there is no blockage.

 

 

Thanks Omar! Yeah that definitely is the case in mine, just making sure it isn't defective from the factory.

PerfaZn0w, my wife decided she was tired of driving a Focus so she "allocated" my 2012 to her daily driver. Traded the Focus in on the 2018 Edge for myself. Now we are a two Edge and one Corvette family.

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My 2017 seats heat and cool great.

Update: My backrest cooling no longer works on my 2017 Sport.

Edited by 1004ron

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drivers side cooled seat in my 2015 only works intermittently.

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