Driver side seat heaters

Question edited for clarity.
Question moved from Spanish Car company 'Seat', pronounced See-At.

Check Fuse 13 (Heated Seats)

https://fuse-box.info/chevrolet/chevrolet-uplander-2005-2008-fuses-and-relay

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Question edited for clarity and toss in some CAPS.
Question moved to model category.

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.

Seat heater doesn't work - Ford Flex Forum

FordFlex.net https://www.fordflex.net > ... > Recalls and TSBs
Apr 19, 2012 - The driver side seat heater for my 2009 Flex stopped working. The dealer says that it is the heating element and is $500 to replace and of ...

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Trying to test my 2009 Ford flex driver side heated seat

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Ford Flex Seat Heater Control Module - 9U5Z14C724A

Lakeland Ford Parts https://parts.lakelandford.com > Ford__Flex > Seat-He...
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Drivers side seat heater repair and costs - Page 2

My Ford Freestyle https://www.myfordfreestyle.com > forums > viewtopic
Dec 11, 2009 - I checked all connections under the seat. The bottom pad has a 4 wire pin connector and the back has a 3 wire pin connector.

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According to the factory wiring diagram for a 2002 Honda Odyssey, the seat heater switch hi/low indicator lights won't light up unless the seat heater relay is good. The seat heaters have thermostats and circuit breakers that limit power to the seat heaters under the following conditions:

Thermostats: On below 93F and off above 109F

Circuit breakers: On below 86F and off above 122F

The breakers operate in series with the thermostats and serve as backups to faulty thermostats.

the switch works the relay, the relay powers the heater, being a 12volt heating element, it's bound to have a good size wire going to it, make sure the wire feeding that relay is hot, it will be a larger inline fuse or a fusable link,it will come off a main power source,I.E. the starter or something like that, the small fuse you replaced is for the relay curcuit,good luck

There should be a fuse or relay for both under the hood. Usually in a black plastic box located on the left side of the engine compartment on or near the fender well. Remove the cover from the box and check the appropriate relay or fuse. There should be a diagram of the fuses and relays in the top cover.

I have found that is the grid fails the light will not light, it is not just a switch, it also has a timer circuit in it, when the grid burns out it will in most cases short out, this destroys the switch module, so both will have to be replaced to correct your problem. I base this diagnosis on 30 years of new car dealer work as a technician.

sounds like a bad relay. Look in the owners manual or on the fusebox cover. It will not be a fuse, but a silvery looking box that pulls out. Youll have to check the documentation to see which one it is in your vehicle.
Sometimes it is under the seat in a Volvo.
check the relay under the seat, make sure it hasn't worked its way loose. if its still tight, the heater pad itself has probably checked out.
If its not the relay, and you want to save some $$, replace the drivers side with the P/S. 'F' the passenger :)

Ok it is obvious since the light is coming on you are getting power to the switch. It could be a heated seat relay. Im fairly sure jeeps use a relay after the switch that is where I would start. Check and see if the Heated seat relay, and fuse are good