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2011 mkz hybrid seats heating & cooling problem

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When i press the switch, the 3 led's stay on for 1 second and then turn off. Any idea why? Anyone have a wiring diagram?

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3 hours ago, etrain said:

When i press the switch, the 3 led's stay on for 1 second and then turn off. Any idea why? Anyone have a wiring diagram?

Hi etrain.  Is it a problem with the heating and cooling features, or only the heating feature? 

If it is the seat heaters, the most common cause is usually either a broken/shorted heating element in the seat bottom, or a shorted/broken wiring harness in the wiring in the seat back area, due to a lack of necessary slack.

I do not have the 2011 wiring diagrams, but we have tech members who may have access to them.  Hopefully one of them will jump in and assist you.

Keep us updated and good luck.

 

Edited by bbf2530

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This is a heating seat issue I assume?

If so,  then you have a burnt or broken heating element,  which usually occurs in the seat pad.  Read this thread,  my repair write up is there. 

https://www.fordfusionforum.com/topic/10703-heated-seat-issue/

Edit Looks like bbf2530 beat me to it.    But you don't need a wiring diagram for the repair.

Edited by fusionff

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Based on the topic title, it appears that he OP has the heated and cooled seats.  In that case, there are no heating elements per se.  A thermoelectric (Peltier) device is used instead.  Could be a wiring problem or a module problem.   To get a definitive answer, the DTC(s) are necessary.

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3 hours ago, drolds1 said:

Based on the topic title, it appears that he OP has the heated and cooled seats.  In that case, there are no heating elements per se.  A thermoelectric (Peltier) device is used instead.  Could be a wiring problem or a module problem.   To get a definitive answer, the DTC(s) are necessary.

I have a scan tool but it is not showing anything. To get those dtc's is it the forscan that is requireed?

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8 hours ago, bbf2530 said:

Hi etrain.  Is it a problem with the heating and cooling features, or only the heating feature? 

If it is the seat heaters, the most common cause is usually either a broken/shorted heating element in the seat bottom, or a shorted/broken wiring harness in the wiring in the seat back area, due to a lack of necessary slack.

I do not have the 2011 wiring diagrams, but we have tech members who may have access to them.  Hopefully one of them will jump in and assist you.

Keep us updated and good luck.

 

it does the same thing when i press heat or cool

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19 hours ago, etrain said:

I have a scan tool but it is not showing anything. To get those dtc's is it the forscan that is requireed?

A regular scan tool won't show any codes for this.  FORScan should have that capability.  There are others here that are knowledgeable with with FORScan.  Maybe they'll weigh in.  If not, a dealer or well-equipped shop diagnostic with an IDS tool will be necessary.

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I think there is a Climate Controlled Seat Module that controls the seats, located under the seat (I think).  

But first, I'd check the fuse(s), all wiring connections under the seat, and filter.  

And is this issue affecting one seat, or all?

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28 minutes ago, fusionff said:

I think there is a Climate Controlled Seat Module that controls the seats, located under the seat (I think).  

But first, I'd check the fuse(s), all wiring connections under the seat, and filter.  

And is this issue affecting one seat, or all?

It is affecting both front seats and both heating and cooling. I must say that there is not a ton of information about these cars online. Glad I found something here

Edited by etrain

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3 hours ago, etrain said:

It is affecting both front seats and both heating and cooling. I must say that there is not a ton of information about these cars online. Glad I found something here

That's the module I was referring to above. Dual Climate Control Seat Module  (DCSM).  The connectors have been known to overheat and melt.  

FWIW; https://www.dropbox.com/s/l5m669xts3n8ci3/wi.pdf?dl=0

I believe it's under the passenger seat but don't hold me to that.

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4 hours ago, etrain said:

It is affecting both front seats and both heating and cooling. I must say that there is not a ton of information about these cars online. Glad I found something here

Hi etrain.  In addition to the possibilities drolds1 mentioned, I just saw mention of a failed "TED" (Thermo Electric Device) causing failure of the heated and cooled function on the drivers seat of a Ford Fusion Sport (cousin to our cars) on a Ford Fusion Sport forum. In their case, the passenger seat was still working.

The TED was replaced under warranty and it fixed the drivers seat issue.  I realize both your front seats are not working, but it is another possibility to look into.

Keep us updated and good luck.

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On 12/10/2018 at 1:37 PM, drolds1 said:

That's the module I was referring to above. Dual Climate Control Seat Module  (DCSM).  The connectors have been known to overheat and melt.  

FWIW; https://www.dropbox.com/s/l5m669xts3n8ci3/wi.pdf?dl=0

I believe it's under the passenger seat but don't hold me to that.

I hold you to that because that is where I found it and you are correct about the overheat and melt - 1 terminal totally burnt....ty

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OK. Good.  Let us know if you get them working again.

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ok, here you go with how I fixed it. I did not read the other article. The connector was a bitch to get off because of the welding that happened. The solder joints on the rear of the board needed to be resoldered (I did all the joints not just the bad one) Everything else you should be able to see in the pictures. I used a drill to hollow out the burnt pin.

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Hi etrain.  Nice work! And thanks for posting back to help others with your fix. 😀

 

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Great work!  And yes, thanks for posting it.

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