[Davein757]

I'd start with the fuses.

Fuse Box Diagram Ford Taurus (2013-2019)

Fuse box diagram (location and assignment of electrical fuses and relays) for Ford Taurus (2013, 2014, 2015, 2016, 2017, 2018, 2019).

fuse-box.info

It’s not fuses. If I manually turn on the map lights, the bulbs work

 

[Davein757]

First check the interior light dimmer switch / dial. It could be set to off.

Second fuses. The Map lights have two fuses. One for the button and one for the interior lights. See wiring diagram below:
View attachment 224321

The same fuse will kill the trunk button and steering wheel lights?

 

[Davein757]

All buttons work but are not illuminated. Map lights work when pressed but no interior lights when any door is opened

 

[Davein757]

I never knew that