Hi,
Each seat has a its own fuse, but they are not broken down by adjustment modes. Did this happen at the same time because they aren't tied together?
Do this. First, in picture 1 below I attached the fuses for both seats. L is the driver's side and R is the passenger side. In pics 2 and 3, you will see one wire coming into the switch. That is the power supply from the fuse. If you notice, the power is supplied to all modes of operation and then distributed to the motor you select. For example, forward and backwards. So, what you need to do is disconnect the switches and see if there is power to the color wires indicated in the schematic. There has to be power in to the switch since some of the functions still work.
Here are a few links you may find helpful. Again, I don't feel this could be related to a fuse. If I had to guess, I would say the switches are bad or the connectors are no longer attached to the motor to move the seats back and forth. However, for both to fail in this way at the same time doesn't make sense to me. Regardless, anything is possible. LOL
Here are the links I mentioned. I am including fuse info, but don't think that's the issue.
https://www.2carpros.com/articles/how-a-car-fuse-works
https://www.2carpros.com/articles/how-to-check-a-car-fuse
https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester
https://www.2carpros.com/articles/how-to-use-a-voltmeter
https://www.2carpros.com/articles/how-to-check-wiring
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I hope this helps explain things for you. Let me know what you find or if you have other questions.
Take care,
Joe
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Saturday, March 14th, 2020 AT 6:38 PM