WHEN I TRY TO TURN ON THE FRONT HEATED SEATS THE LIGHTS FOR THE SEATS JUST FLASH AND I CAN HEAR A CLICKING UNDER THE DRIVERS SEAT. NIETHER THE DRIVERS OR PASSENGER SIDES WORK . REAR SEATS WORK FINE.
You need to check the resistance in each of the heated seat elements in the seat. There's a two wire connector under the back of each front seat. The connector should be green. disconnect it and measure the resistance along the circuit going into the seat. if it isnt .1 - .3 ohms, replace the appropriate heated seat element
Dealer has checked element and resistance and says the module is the problemDealer has checked element and resistance and says the module is the problem
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Check the connections to the module and the element. There is help in the forums and videos as well, although not all on the Ford Flex, the idea is the same.
JustAnswerhttps://www.justanswer.com > Ford Repair
Jan 24, 2019 - If the resistance reading of step 2 shows proper value, perform an amperage draw test of the heater elements by applying power to the YE/BU wire ...
Check for battery power on the orange wire pin D and ground (black wire) pin C- Brown wire pin B should be ignition hot on connector C1 on the Driver Climate Control Seat Module located under the driver seat. If you have power and ground, you may need to use a scan tool to see if there are any codes stored in the module. If the scan tool is unable to communicate with this module, it could either be a bad module or a network problem. If you are missing either battery, ignition hot, or ground- then repair as needed
Are the connectors actually wired the same? Check the wiring diagrams for each seat if you can find them, otherwise trace the wiring from the internal components in the seat to the connector and make sure the heaters are going to heater power pins in the original harness, and temperature sensors are going to temperature sensor pins (temperature sensors may be polarized, that is, it makes a difference which pin goes to positive and which to ground).
The heated seats are a luxury feature that heat the front seats. This provides maximum comfort for the driver and the front passenger. To turn on the heated seats, press the heated seat button, which is a picture of a seat. There are two of these buttons, and each are located on the center console. The button on the driver's side of the console controls the heat for the driver's seat, while the button on the passenger's side of the center console controls the heat for the passenger's seat. Pressing the heated seat button will turn the heated-seats onto their highest setting. Pressing the button a second time will lower the heated seats to their medium setting. Pressing the button a third time will result in the lowest setting. Pressing the button a fourth time will turn off the heated seats. There are three lights next to the heated seat buttons to indicate what setting the heated seats are on. Tip
The heated seats will only work when the engine is running.
Usually in most cases when the heated seats quit working its the heated seat element that you sit on under the padding. Here's what I want you to do: Turn the key on then push the heated seat on button and see if it lights up. This is a quick test but not always an accurate test because the switch could still be working but the LED Light could be bad. BUT, in most cases this is a good test. If it lights up then its safe to say that its mostly likely the ELEMENT that's bad. Most of the time if you'll raise the seat cover you'll see that the element is burnt. Hope this helps and have an awesome day.
Remove the ignition key. Unplug the HSM (heated seat module). It is under the passenger seat. You can easily accomplish this with the seat all the way back. Wait a few seconds they plug it back in. Start the engine. Turn the seats on. If the indicator lights come on for 2 seconds and then go out, further diagnostics is required. Hopefully they'll stay on and the seats will be working fine.
There is a drivers and passengers door/seat controll module. These have been failing a lot. dealers stock them now. The element in the seat can also be bad. I recommend taking it to the dealer as painfull as that may sound but they will diagnose it properly because they have to command it on and off with a scantool. Sorry for the bad news. The modules aren"t cheap and the element is difficult to replace. It is worth the 80.00 it will cost you to find out. Good luck
The controller could be bad but I would probe the related wiring first. From your symptoms it sounds like something can not handle the electrical load. You turn the F/R seat heater on but then you turn on the F/L and the whole system fails. It does sound like the source of the problem will be under the drivers seat. Testing needs to be performed to confirm and identify the source. Both seats share the same fuse and ground. This circuit may have a damaged wire or connector somewhere. Inspect and test as much as you can. Also look underneath the seats for anything. Customers are not aware that personal belongings and trash get pushed underneath the seats and will damage wiring. Also excessively moving the seat forward and back will weaken the harness over time. Please write back and let me know what you need. If it is more diagnostic information or suggestions just let me know. Good Luck
The most likely failure point is the driver heated seat elements. They probably have excessive resistance and once they warm up a little they short out the module and it defaults to not working. I would recommend replacing both upper and lower driver seat elements.
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