Alternator failure

Helo all,

I'm curious how long the factory alternator are lasting on your 4Runners. Mine seems to be crapping out after 5 years (I have 2018). How about yours?

 

Sounds unusual. I’ve had two other Toyota’s, one with almost 300k and the other pushing 200k, both with the original alternator.

 

Agreed. Still on original alternator my 2003 Tacoma with 200k.

 

OP, what are your symptoms?

 

2013 here, still Original

 

Seems to be crapping out eh.

How does it seem?

 

My 07 original crapped out last year at about 200k.
My 18 is still on original 104k.

 

Definitely not normal. The alternator on my previous 4Runner was original at 257K miles.

Do you do a lot of deep water crossings or mud?

 

In my experience, replace brushes near 200k miles and you’re good for probably another 200k.

 

Define ‘crapping out’.

 

OP hasn't been back since posting. Hmmm..

 

Not the OP, but also maybe(?) having alternator problems.

Is the alternator in a 2021 4Runner a Euro 5/6 aka "smart" alternator, or an old-school fixed-voltage alternator? Inquiring minds want to know...