2018 Toyota 4runner

my 2018 Toyota 4runner engine light, cruise control and traction control suddenly came on last night. Anybody have suggestions as to what the problem(s) could be?

 

Rodents.

 

Its just going to be guesses until you get a scanner and see what codes it's throwing.

 

...which will lead to a thread on how to use the scanner

 

But before that, a thread about what scanner to buy in the first place.

 

I roll for checking the battery as a guess. It "could" be any number of the above items mentioned.

 

Two good possibilities here.^

Some auto parts stores will scan it for you. That will be a lot better than a bunch of guesses from random Internet people.

 

Before that... Which tires to buy thread.

 

Actually, now that you think about it, the first thread would be found a 2001 with 35237890 miles, single owner, rusted frame asking 35,000 USD. Is it a good buy? Forget the codes or the Christmas lights