01 Expedition

I have a problem with driver and passenger side power mirrors. They both stopped working.

Check your fuses. If all ok then post back. Ford doesn't label what fuse is for what so just check all of them, the ones in the engine bay and the ones under the dash.

Where in the engine bay are they located?

Where in the engine bay are they located?
Drivers side of engine compartment. Do you have power mirrors with memory or without? The fuse for power mirros is actually under dash its a 7.5 amp.

Just power, no memory.

If its not the fuse, then I'd be looking at either the switch or the power source to switch