Is there a cheat or a mod that will disable the lint fires automatically?

Get your Sim a bit of handiness skill, and you can upgrade your dryer so that the lint tray never needs to be cleaned (and won't catch fire, either).

Or you could empty the lint trap just like real life!

No, these are families I am not playing so I can't control them. I didn't realize they dryers could be upgraded that way though. That's a useful piece of information. I guess I'll send one of my handy sims to visit and while there he can go and upgrade those other households' machines. Shame we don't have working sprinklers like in Sims 3.

"FlamingoKicker1;c-16470092" wrote:
No, these are families I am not playing so I can't control them. I didn't realize they dryers could be upgraded that way though. That's a useful piece of information. I guess I'll send one of my handy sims to visit and while there he can go and upgrade those other households' machines. Shame we don't have working sprinklers like in Sims 3.

Hello
This is link to information about the upgrades and the level of handiness needed
https://simsvip.com/sims-4-laundry-guide/#Upgrades

"FlamingoKicker1;d-939597" wrote:
I've seen two sims die from stupid lint fires and even when they had the fire sprinklers (or at least that box you stick on the wall that is supposed to put out fires). They still go up in flames and it is usually kids who are just trying to clean up. That'll teach 'em to want clean clothes. But seriously, there should be something you can put in your game that will rid us of that "feature" but not take away the good parts of laundry.

Okay, silly comment, but just in case you overlooked that: Sims 4 does have sprinklers. You have to put not only the boxlike thingie on your wall, but also one sensor (catalogue name: Alertz Smoke Alarm) into each room where you expect fires to start. Equipped like this the sensor picks up the smoke and activates a sprinkler. I never saw or placed an actual sprinkler, but there's water coming out of the ceiling, so I'll grade that "good enough".

"FlamingoKicker1;c-16470092" wrote:
No, these are families I am not playing so I can't control them. I didn't realize they dryers could be upgraded that way though. That's a useful piece of information. I guess I'll send one of my handy sims to visit and while there he can go and upgrade those other households' machines. Shame we don't have working sprinklers like in Sims 3.

You could probably download upgraded dryers from the gallery if you still need them.

"gummybear0724;c-16494277" wrote:

"FlamingoKicker1;c-16470092" wrote:
No, these are families I am not playing so I can't control them. I didn't realize they dryers could be upgraded that way though. That's a useful piece of information. I guess I'll send one of my handy sims to visit and while there he can go and upgrade those other households' machines. Shame we don't have working sprinklers like in Sims 3.

You could probably download upgraded dryers from the gallery if you still need them.

The upgrades won't stick once they uploaded to the gallery or saved in the library. I'm not sure why they did it this way, but it's a real pain.

"FlamingoKicker1;c-16470092" wrote:
No, these are families I am not playing so I can't control them. I didn't realize they dryers could be upgraded that way though. That's a useful piece of information. I guess I'll send one of my handy sims to visit and while there he can go and upgrade those other households' machines. Shame we don't have working sprinklers like in Sims 3.

This is some good information to know. I don't have this pack yet, was thinking about getting it while it was on sale, but I think I changed my mind.