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Discussion Starter #1
I have a problem with my heated seat this past week. I have looking on the forums and haven't really found much pertaining exactly to my issue, so I'll ask and see if anyone else has seen this and what the required fix is. My trim level on my F-250 is Lariat, so I have the heated /cooled front seats.

My driver side heated seat has stopped working a few days ago. When I select driver side heat on the dash, the lights light up and the seat fan runs for about 10 seconds and then stops. The seats do not get warm but the switch indicator remains lit, same results for low, medium and high settings. I have tried the passenger seat, it responds exactly as the drivers side, the lights come on the fan runs for about 10 seconds, then stops, no heat. An interesting thing about the passengers side is that the seat almost never gets used, I am almost always the sole occupant in the truck.

If I select cooling, the seat fans run normally and the seats cool on both seats.

I have owned the truck since new, it has 80,000 miles, with normal service. I have replace the seat fan filters twice, the second time was just this past June. Both the heating and cooling function have always worked fine with no problems until now.

I would be interested in knowing if anyone else on the forum has had this problem, and what service was needed to return the heating function to normal service.
 

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Schematics show that both seats are controlled by the Dual Climate Control Seat module (DCSM). It is located under the passenger seat. There might be a problem with the DCSM since the problem is common to both seats. You might need to make some voltage checks to determine the problem.
 

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Discussion Starter #3
Schematics show that both seats are controlled by the Dual Climate Control Seat module (DCSM). It is located under the passenger seat. There might be a problem with the DCSM since the problem is common to both seats. You might need to make some voltage checks to determine the problem.
Thanks for the reply Larry. I will do some checking. If the DCSM needs to be replaced is it just a swap out? Or does the dealer need to reprogram the BCM or any other black box?

TASCA lists the unit BU5Z-14C724-A for $116.41.

Once again, Thank You for your reply.

Ken.
 

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The Ford Workshop DVD talks about it requiring to be programmed. Does not mention the rear seats. I am not sure what or how you would go about the rear seat programming. You could try replacing the module and check the operation.

If it doesn't work properly, you could try programming it with FORScan and your As-Built data.

You can download your AB data here...

https://www.motorcraftservice.com/AsBuilt

To program, you need a laptop setup for FORScan and an OBDII interface or go to a dealer.

Here is my AB data for non-heated rear seats. You can compare it to uses to see if you need to change any programming for the rear seat heating for your truck.

776-01-01 4B38 0A2A 0036
776-02-01 553C 0A32 0552
776-03-01 6447 0A3B 32A3
776-04-01 503C 5030 C856
776-05-01 4632 504B 5AF0
776-06-01 645A 6400 1EC4
776-07-01 6E41 3C0A 69E3
776-08-01 FEFE 2300 00A5

If your data is different and programming is required, can you post your AB data for you 776 DCSM?
 

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Thanks for the reply Larry. I will do some checking. If the DCSM needs to be replaced is it just a swap out? Or does the dealer need to reprogram the BCM or any other black box?

TASCA lists the unit BU5Z-14C724-A for $116.41.

Once again, Thank You for your reply.

Ken.
Ken,

I believe this is the rear seat control module part number 9U5Z-14C724-A.
 

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The Dual Climate Controlled Seat Module has self test and diagnostic capability. Before just throwing parts at it I recommend having the module checked for codes. And to confirm, the module does require PMI if being replaced.
 

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Schematics show that both seats are controlled by the Dual Climate Control Seat module (DCSM). It is located under the passenger seat. There might be a problem with the DCSM since the problem is common to both seats. You might need to make some voltage checks to determine the problem.
Do you have a copy of the schematic? I have no power on the connector of my DCSM. The fuse (85) is good.
 

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Discussion Starter #9
I know it's been a long time since I did this, but just in case anyone else has this problem I wanted to follow up:

Installing a new DCSM #BU5Z-14C724-A fixed the problem. I did have to reset the programming with FORSCAN to the as built setting.

That fixed everything.

Larry,
my as built programming is:

776-01-01 4B38 0A2A 0036
776-02-01 553C 0A32 0552
776-03-01 6447 0A3B 32A3
776-04-01 503C 5030 C856
776-05-01 4632 504B 5AF0
776-06-01 645A 6400 1EC4
776-07-01 6E41 3C0A 69E3
776-08-01 FEFE 2300 00A5
776-09-01 EAFF FFFF FF6D
 
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